Logging in Distributed Workflows (2009)
Christoph Ringelstein, Steffen Staab
Abstract. Business needs are nowadays frequently realized by business workflows spanning multiple organizations. Current infrastructures, such as SOA, support this trend on the implementation side....
LABELLING IMAGE REGIONS USING SPATIAL PROTOTYPES (2009)
Carsten Saathoff, Marcin Grzegorzek, Steffen Staab
In this paper we present an approach for introducing spatial context into image region labelling. We combine low-level classification with spatial reasoning based on explicitly represented spatial...
ABSTRACT Gimme ’ The Context: Context-driven Automatic Semantic Annotation with C-PANKOW (2009)
Without the proliferation of formal semantic annotations, the Semantic Web is certainly doomed to failure. In earlier work we presented a new paradigm to avoid this: the ’Self Annotating Web’, in...
Querying for Meta Knowledge (2009)
Bernhard Schueler, Sergej Sizov, Steffen Staab
The Semantic Web is based on accessing and reusing RDF data from many different sources, which one may assign different levels of authority and credibility. Existing Semantic Web query languages,...
• The ρ Operator: Discovering and Ranking Associations on the Semantic Web – (2009)
Steffen Staab, Rudi Studer, Christoph Bussler, Dieter Fensel, Er Maedche, Kemafor Anyanwu, ...
NSF-EU NSF EU Workshop on
Composition Standards Exposed (2009)
“loosely coupled, reusable software components that semantically encapsulate discrete functionality and are distributed and programmatically accessible over standard Internet protocols” (see...
Steffen Staab, Francis Heylighen, Carlos Gershenson
I first encountered the principle of self-organization in my last year of high school, when our teacher had us give a series of talks on a high-level view of the works of Ilya Prigogine, Humberto...
A Model of Events based on a Foundatiional Ontology (2009)
Scherp, Ansgar, Franz, Thomas, Saathoff, Carsten, Staab, Steffen
The lack of a formal event model hinders interoperability in distributed event-based systems. Consequently, we present in this paper a formal model of events, called F. The model bases on an...
The CKC Challenge: Exploring Tools for Collaborative Knowledge Construction (2008)
Steffen Staab, Natalya F. Noy, Abhita Chugh Yahoo
Web 2.0’s great success is fueled mainly by an infrastructure that lets users easily create, share, tag, and connect content and knowledge. In general, the knowledge created in today’s...
ABSTRACT Towards the Self-Annotating Web (2008)
The success of the Semantic Web depends on the availability of ontologies as well as on the proliferation of web pages annotated with metadata conforming to these ontologies. Thus, a crucial question...
Editorial: Introduction to the special issue on "semantic multimedia" (2008)
Avrithis, Yannis, O'Connor, Noel E., Staab, Steffen, Troncy, Raphael
Editorial: Introduction to the special issue on "semantic multimedia" (2008)
Avrithis, Yannis, O'Connor, Noel E., Staab, Steffen, Troncy, Raphael
Project Halo Towards a Digital Aristotle (2008)
Noah S. Friedl, Paul G. Allen, Gavin Matthews, Michael Witbrock, David Baxter, Jon Curtis, ...
■ Project Halo is a multistaged effort, sponsored by Vulcan Inc, aimed at creating Digital Aristotle, an application that will encompass much of the world’s scientific knowledge and be capable of...
• Relational Metadata • Modes of Interaction (2008)
Siegfried H, Steffen Staab, Forschungszentrum Informatik Karlsruhe, Meta Ontology
"Tall'GoodV'High " — Compared to What? (2008)
We specify a model for the conceptual interpretation of positive gradable adjectives. Building on a classification-based terminological reasoning approach we define comparison classes and class norms...
Raphael Volz, Siegfried H, Steffen Staab, Rudi Studer, Identifier Del, Ian Horrocks
Version 1.0
of the European Communities as project number IST-2001-33052. (2008)
Daniel Oberle, Raphael Volz, Boris Motik, Steffen Staab, Identifier Del, Ian Horrocks
Version 1.1
Efficient Service Matchmaking using Tree-Structured Clustering (2008)
Bernhard Tausch, Steffen Staab, Nicola Fanizzi
Abstract. A tree structure for efficient service matchmaking is created by using a clustering algorithm. Tree nodes represent a superset of all service descriptions in the leaves below. During query...
COMM: Designing a Well-Founded Multimedia Ontology for the Web (2008)
Richard Arndt, Raphaël Troncy, Steffen Staab, Lynda Hardman, Miroslav Vacura
Abstract. Semantic descriptions of non-textual media available on the web can be used to facilitate retrieval and presentation of media assets and documents containing them. While technologies for...
The Semantic Web The Semantic Web Revisited (2008)
Steffen Staab, Nigel Shadbolt, Wendy Hall
In the 50 years since the term AI was coined at the Dartmouth Conference, the digital world has evolved at a prodigious rate. It has produced an information infrastructure that few would have...
of the European Communities as project number IST-2001-33052. (2008)
Identifier Del, Daniel Oberle, Dirk Wenke, Raphael Volz, Steffen Staab, Ontoprise Gmbh, ...
This document forms part of a research project funded by the IST Programme of the Commission
Composition Standards Exposed (2008)
“loosely coupled, reusable software components that semantically encapsulate discrete functionality and are distributed and programmatically accessible over standard Internet protocols” (see...
Kosmas Petridis, Kai Kuehn, Siegfried H, Stephan Bloehdorn, Carsten Saathoff, Yannis Avrithis, ...
Annotations of multimedia documents typically have been pursued in two different directions. Either previous approaches have focused on low-level descriptors, such as dominant color, or they have...
Steffen Staab, Francis Heylighen, Carlos Gershenson
I first encountered the principle of self-organization in my last year of high school, when our teacher had us give a series of talks on a high-level view of the works of Ilya Prigogine, Humberto...
COMM: Designing a Well-Founded Multimedia Ontology for the Web (2008)
Richard Arndt, Raphaël Troncy, Steffen Staab, Lynda Hardman, Miroslav Vacura
Abstract. Semantic descriptions of non-textual media available on the web can be used to facilitate retrieval and presentation of media assets and documents containing them. While technologies for...
of the European Communities as project number IST-2001-33052. (2008)
Daniel Oberle, Steffen Staab, Rudi Studer, Raphael Volz, Identifier Del, Ian Horrocks
Version 1.1
Deriving Concept Hierarchies from Text by Smooth Formal Concept Analysis (2008)
We present a novel approach to the automatic acquisition of taxonomies or concept hierarchies from texts based on Formal Concept Analysis. Our approach is based on the assumption that verbs pose...
Efficiency of Ontology Mapping Approaches (2008)
Abstract. (Semi-)automatic mapping — also called (semi-)automatic alignment — of ontologies is a core task to achieve interoperability when two agents or services use different ontologies. In the...
Efficient Discovery of Services Specified in Description Logics Languages (2008)
Steffen Staab, Nicola Fanizzi, Floriana Esposito
Abstract. Semantic service descriptions are frequently given using expressive ontology languages based on description languages. The expressiveness of these languages, however, often implies problems...
The Semantic Web Applying Semantic Web Technologies to Drug Safety Determination (2008)
Susie Stephens, Alfredo Morales, Matthew Quinlan, Steffen Staab, Susie Stephens Oracle, Alfredo Morales, ...
This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying...
Die Arbeitsberichte des Fachbereichs Informatik dienen der Darstellung vorläufiger (2008)
Der Dekan, Prof Dr. Paulus, Simon Schenk, Steffen Staab
werden. Die Autoren sind deshalb für kritische Hinweise dankbar. Alle Rechte vorbehalten, insbesondere die der Übersetzung, des Nachdruckes, des Vortrags, der Entnahme von Abbildungen und Tabellen...
Lifecycle Knowledge Management: Getting the Semantics Across in X-Media (2008)
Steffen Staab, Thomas Franz, Olaf Görlitz, Carsten Saathoff, Simon Schenk
Abstract. Knowledge and information spanning multiple information sources, multiple media, multiple versions and multiple communities challenge the capabilities of existing knowledge and information...
Integrating UML Models and OWL Ontologies (2008)
Der Dekan, Prof Dr. Paulus, O Silva Parreiras, Steffen Staab, Andreas Winter, ...
Die Arbeitsberichte aus dem Fachbereich Informatik dienen der Darstellung vorläufiger Ergebnisse, die in der Regel noch für spätere Veröffentlichungen überarbeitet werden. Die Autoren sind...
Efficient Discovery of Services Specified in Description Logics Languages (2008)
Steffen Staab, Nicola Fanizzi, Floriana Esposito
Abstract. Semantic service descriptions are frequently given using expressive ontology languages based on description languages. The expressiveness of these languages, however, often implies problems...
An ontology-based approach facilitates the management and administration of distributed Web applications developed using application servers and Web services. Application servers and Web services...
Interdisciplinary Work: The Key to (2008)
Steffen Staab, Functional Genomics, Luca Bernardi, Esther Ratsch, Renate Kania, Jasmin Saric, ...
As a grad student, you are told, “One day in the library saves you one month in the lab. ” But what if the books are written in a language you don’t understand? What if the literature on...
An Ontology-based framework for text mining (2008)
Stephan Bloehdorn, Andreas Hotho, Steffen Staab
Structuring of text document knowledge frequently appears either by ontologies and metadata or by automatic (un-)unsupervised text categorization. This paper describes our integrated framework OTTO...
Accessing Distributed Learning Repositories through a (2008)
Courseware Watchdog, Christoph Schmitz, Steffen Staab, Rudi Studer, Gerd Stumme, Julien Tane
Abstract. Topics in education are changing with an ever faster pace. Especially in the field of life-long learning the aspects that need to be taught by information providers must keep up to date...
SAM: Semantics Aware Instant Messaging for the Networked Semantic Desktop (2008)
Abstract. While instant messaging (IM) became a mature communication means in business organizations over the last years, IM systems did not follow this evolution comparably. Communicated content is...
COPI: Cross-Contextual Information Management for the Semantic Desktop (2008)
Thomas Franz, Richard Arndt, Steffen Staab
Abstract. Knowledge work is characterized by personal processes that describe complex tasks in which information is utilized in different contexts. The semantic desktop has been coined as a...
IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS 1 Semantic Social Overlay Networks (2008)
Er Löser, Steffen Staab, Christoph Tempich
Abstract — Peer selection for query routing is a core task in peer-to-peer networks. Unstructured peer-to-peer systems (like Gnutella) ignore this problem, leading to an abundance of network...
Aleksander Pivk, Lars Schmidt-thieme, Steffen Staab
Abstract. We present a novel approach to learning taxonomic relations between terms by considering multiple and heterogeneous sources of evidence. In order to derive an optimal combination of these...
Noah Friedland, Gavin Matthews, Michael Witbrock, David Baxter, Jon Curtis, Blake Shepard, ...
Project Halo is a multi-staged effort, sponsored by Vulcan Inc, aimed at creating the Digital Aristotle, an application that will encompass much of the world's scientific knowledge and be...
Editorial: Introduction to the special issue on "Semantic Multimedia" (2008)
Avrithis, Yannis, O'Connor, Noel E., Staab, Steffen, Troncy, Raphael
Editorial: Introduction to the special issue on "Semantic Multimedia" (2008)
Avrithis, Yannis, O'Connor, Noel E., Staab, Steffen, Troncy, Raphael
ABSTRACT An Application Server for the Semantic Web (2008)
Daniel Oberle, Steffen Staab, Raphael Volz
The Semantic Web relies on the complex interaction of several technologies involving ontologies. Therefore, sophisticated Semantic Web applications typically comprise more than one software module....
Semantic Social Overlay Networks (2008)
Er Löser, Steffen Staab, Christoph Tempich
Abstract — Peer selection for query routing is a core task in peer-to-peer networks. Unstructured peer-to-peer systems (like Gnutella) ignore this problem, leading to an abundance of network...
ECDL 2000 Workshop on the Semantic Web An Extensible Approach for Modeling (2008)
Ontologies In Rdf(s, Steffen Staab, Michael Erdmann, Er Maedche, Stefan Decker
Abstract. RDF(S) 1 constitutes a newly emerging standard for metadata that is about to turn the World Wide Web into a machine-understandable knowledge base. It is an XML application that allows for...
and other data. The underlying technologies are not explicitly new, but the upcoming scale and scope of deployment offers great potential—as well as challenges. —Alexander Linden 1 Lack of...
Organizing Resources on Tagging Systems using T-ORG (2008)
Abstract. Tagging systems (or folksonomies) like Flickr or Delicious are expanding tremendously. More and more resources are being added to them. As the resources present on these system increase in...
The Semantic Web The Semantic Web in One Day (2008)
Steffen Staab, York Sure, Pascal Hitzler, Andreas Eberhart, Rudi Studer
likely your answer would be “No, that’s impossible.” Typical projects in which concrete applications are built last months or years. And the Semantic Web isn’t just another application....
Adding Formal Semantics to MPEG-7: Designing a Well-Founded Multimedia Ontology for the Web (2008)
Der Dekan, Prof Dr. Paulus, Prof Dr. Walsh, Prof Dr. Wimmer, Prof Dr. Zöbel, ...
Die Arbeitsberichte aus dem Fachbereich Informatik dienen der Darstellung vorläufiger Ergebnisse, die in der Regel noch für spätere Veröffentlichungen überarbeitet werden. Die Autoren sind...
Authoring and Annotation of Web Pages in CREAM ABSTRACT (2008)
Steffen Staab, Siegfried Handschuh
Richly interlinked, machine-understandable data constitute the basis for the Semantic Web. We provide a framework, CREAM, that allows for creation of metadata. While the annotation mode of CREAM...
Bootstrapping Ontology Alignment Methods with APFEL (2008)
Marc Ehrig, Steffen Staab, York Sure
this paper requires training examples. The assistance in their creation is necessary as in a typical ontology alignment setting there are only a small number of really plausible alignments available...
Unterstützung und Dokumentation kollaborativer Entwurfs- und Entscheidungsprozesse (2008)
Dellschaft, Klaas, Staab, Steffen
Im Rahmen von Projekten haben die Mitarbeiter in einem Unternehmen oft komplexe Problemstellungen zu bearbeiten, für die es keine objektiv richtigen oder falschen Lösungen gibt. Stattdessen werden...
Querying for Meta Knowledge (2008)
Schueler, Bernhard, Sizov, Sergej, Staab, Steffen
The Semantic Web is based on accessing and reusing RDF data from many different sources, which one may assign different levels of authority and credibility. Existing Semantic Web query languages,...
Does a Semantic Desktop Facilitate Your Daily Tasks? (2008)
Franz, Thomas, Scherp, Ansgar, Staab, Steffen
Semantic desktop environments aim at improving the effectiveness and efficiency of users carrying out daily tasks within their personal information management infrastructure (PIM). They support the...
Alani, Harith, Staab, Steffen, Stumme, Gerd
Blogs, Wikis, and Social Bookmark Tools have rapidly emerged on the Web. The reasons for their immediate success are that people are happy to share information, and that these tools provide an...
08391 Executive Summary -- Social Web Communities (2008)
Alani, Harith, Staab, Steffen, Stumme, Gerd
Blogs, Wikis, and Social Bookmark Tools have rapidly emerged on the Web. The reasons for their immediate success are that people are happy to share information, and that these tools provide an...
08391 Group Summary -- The Evolution and Dynamics of Research Networks (2008)
Batagelj, Vladimir, Hoser, Bettina, Müller, Claudia, Staab, Steffen, Stumme, Gerd
Existing collaboration and innovation in scientific communities can be enhanced by understanding the underlying patterns und hidden relations. Social network analysis is an appropriate method to...
08391 Abstracts Collection -- Social Web Communities (2008)
Alani, Harith, Staab, Steffen, Stumme, Gerd
From September 21st to September 26th 2008, the Dagstuhl Seminar 08391 ``Social Web Communities'' was held in the International Conference and Research Center (IBFI), Schloss Dagstuhl. During the...
Benjamin AdrianWorkshop Organization Programme Chairs (2008)
Benjamin Adrian, Günter Neumann, Alexander Troussov, Borislav Popov Preface, Benjamin Adrian, Guenter Neumann, ...
More and more information extraction (IE) systems use ontologies for extraction tasks. These systems use knowledge representation techniques for extracting information from unstructured or...
O Silva Parreiras, Jeff Z. Pan, Jakob Henriksson (eds, O Silva Parreiras, Jeff Z. Pan, Uwe Assmann, ...
The interest in integrating Ontologies and Software Engineering has gained more attention
ECDL 2000 Workshop on the Semantic Web An Extensible Approach for Modeling (2007)
Ontologies In Rdf(s, Steffen Staab, Michael Erdmann, Er Maedche, Stefan Decker
Abstract. RDF(S) 1 constitutes a newly emerging standard for metadata that is about to turn the World Wide Web into a machine-understandable knowledge base. It is an XML application that allows for...
Situation and Perspective of Knowledge Engineering (2007)
Rudi Studer, Stefan Decker, Dieter Fensel, Steffen Staab
Abstract. Knowledge Engineering was in the past primary concerned with building and developing knowledge-based systems, an objective which puts Knowledge
Making Results Comparable - Cross-Evaluating Ontologies (2007)
Alexander Maedche, Er Maedche, Steffen Staab
. Applying knowledge acquisition from text supporting the ontology engineering task seems promising. Among all knowledge sources, texts are the most important source of knowledge for any kind of...
Mining Non-Taxonomic Conceptual Relations from Text (2007)
Alexander Maedche, Er Maedche, Steffen Staab
. Non-taxonomic relations between concepts appear as a major building block in common ontology definitions. In fact, their definition consumes much of the time needed for engineering an ontology. We...
A System for Facilitating and Enhancing Web Search (2007)
Steffen Staab, Christian Braun, Ilvio Bruder, Antje Düsterhöft, Andreas Heuer, Meike Klettke, ...
We present a system that uses semantic methods and natural language processing capabilites in order to provide comprehensive and easy-to-use access to tourist information in the WWW. Thereby, the...
ABSTRACT On Deep Annotation (2007)
Siegfried Handschuh, Steffen Staab, Raphael Volz
The success of the Semantic Web crucially depends on the easy creation, integration and use of semantic data. For this purpose, we consider an integration scenario that defies core assumptions of...
Word Count: 5699 (including bibliography and appendix) (2007)
Steffen Staab, Michael Erdmann, Er Maedche, Stefan Decker
constitutes a newly emerging standard for metadata that is about to turn the World Wide Web into a machine-understandable knowledge base. It is an XML application that allows for the denotation of...
The Semantic Web – New Ways to Present and Integrate Information (2007)
Ontologies in biology have proven successful in order to facilitate information access, e.g. by allowing for conceptual browsing of documents or for augmenting information retrieval of documents by...
Andreas Hotho, Andreas Hotho, Steffen Staab, Steffen Staab, Gerd Stumme, Gerd Stumme
Abstract. Text document clustering plays an important role in providing intuitive navigation and browsing mechanisms by organizing large amounts of information into a small number of meaningful...
Ontology-Oriented Information Extraction and Integration (2007)
Er Mädche, Steffen Staab, Rudi Studer, Free Text
Computational information sources store and provide such large amounts of data that accessing, finding or summarizing information remains a difficult task given the sheer amount of information to be...
www.learninglab.de; lastname learninglab.de (2007)
Christoph Schmitz, Steffen Staab, Rudi Studer, Gerd Stumme, Julien Tane
Abstract. Topics in education are changing with an ever faster pace. Especially in the field of life-long learning the aspects that need to be taught by information providers must keep up to date...
ABSTRACT SEAL — A Framework for Developing SEmantic PortALs (2007)
Nenad Stojanovic, Er Maedche, Steffen Staab, Rudi Studer
The core idea of the Semantic Web is to make information accessible to human and software agents on a semantic basis. Hence, web sites may feed directly from the Semantic Web exploiting the...
Peer-2-Peer enabled Semantic Web for Knowledge Management (2007)
Dieter Fensel L, Steffen Staab, Rudi Studer, Frank Van Harmelen, Ontoprise Gmbh
Abstract. Over the past few years, we have seen a growing interest in the potential of P2P computing and the use of more formal approaches to knowledge management, involving the development of...
Semantic Web Service Architecture (2007)
Tanja Sollazzo, Siegfried H, Steffen Staab, Martin Frank
The importance of Web services has been recognized and widely accepted by industry and academic research. However, the two worlds have proposed solutions that progress along different dimensions....
ABSTRACT EDUTELLA: Searching and Annotating Resources within an RDF-based P2P Network (2007)
Wolfgang Nejdl, Boris Wolf, Steffen Staab, Julien Tane
P2P applications for searching and exchanging information over the Web have become increasingly popular. This has lead to a number of (usually thematically) focused communities, which allow efficient...
Steffen Staab, Rudi Studer, Hans-peter Schnurr, Ontoprise Gmbh, Ontoprise Gmbh
knowledge management includes a tool suite and methodology for developing ontology-based KM systems. It builds on the distinction between knowledge process and knowledge metaprocess and is...
Datum: 5.2.99 1 On2broker in a Nutshell (2007)
Dieter Fensel, Andreas Witt, Jrgen Angele, Stefan Decker, Michael Erdmann, Hans-peter Schnurr, ...
Abstract. On2broker provides brokering services to improve access to heterogeneous, distributed and semistructured information sources as they are presented in the World Wide Web. It relies on the...
Siegfried H, Steffen Staab, Er Maedche
CREAM — Creating relational metadata with a
SWAP - A Semantics-Based Peer-to-Peer System Demonstration (2007)
Marc Ehrig, Peter Haase, Steffen Staab, Christoph Tempich
this paper the SWAP-environment is presented which enables the exchange of knowledge on the basis of a peer-to-peer system [Susarla et al., 2003; Bonifacio et al., 2002] , viz. it is focusing on...
Frank Harmelen, Ian Horrocks, Michel Klein, Claudio Masolo B, Daniel Oberle, Steffen Staab, ...
Ontologies form the backbone of the Semantics Web. They provide explicit descriptions of the conceptualization underlying available information. The effort involved in creating and maintaining...
Towards a Digital Aristotle 1 6/18/2004 Project Halo: Towards a Digital Aristotle 1 (2007)
Noah S. Friedl, Paul G. Allen, Vulcan Inc, Gavin Matthews, Michael Witbrock, David Baxter, ...
Vulcan Inc.’s Project Halo is a multi-staged effort to create a Digital Aristotle, an application that will encompass much of the world's scientific knowledge and be capable of applying...
Engineering a Complex Ontology with Time (2007)
Because it is difficult to engineer a complex ontology with time, we here consider a method that allows for factorizing the complexity of the engineering process, FONTE (Factorizing ONTology...
ABSTRACT Requirements for Information Extraction for Knowledge Management (2007)
Fabio Ciravegna, John Domingue, Siegfried H, Alberto Lavelli, Steffen Staab, Mark Stevenson
Knowledge Management (KM) systems inherently suffer from the knowledge acquisition bottleneck- the difficulty of modeling and formalizing knowledge relevant for specific domains. A potential solution...
ECDL 2000 Workshop on the Semantic Web An Extensible Approach for Modeling (2007)
Ontologies In Rdf(s, Steffen Staab, Michael Erdmann, Er Maedche, Stefan Decker
constitutes a newly emerging standard for metadata that is about to turn the World Wide Web into a machine-understandable knowledge base. It is an XML application that allows for the denotation of...
Authoring and Annotation of Web Pages in CREAM (2007)
Richly interlinked, machine-understandable data constitute the basis for the Semantic Web. We provide a framework, CREAM, that allows for creation of metadata. While the annotation mode of CREAM...
ABSTRACT An Application Server for the Semantic Web (2007)
Daniel Oberle, Steffen Staab, Raphael Volz
The Semantic Web relies on the complex interaction of several technologies involving ontologies. Therefore, sophisticated Semantic Web applications typically comprise more than one software module....
S-CREAM — Semi-automatic CREAtion of (2007)
Siegfried H, Steffen Staab, Fabio Ciravegna
Abstract. Richly interlinked, machine-understandable data constitute the basis for the Semantic Web. We provide a framework, S-CREAM, that allows for creation of metadata and is trainable for a...
ABSTRACT Towards the Self-Annotating Web (2007)
The success of the Semantic Web depends on the availability of ontologies as well as on the proliferation of web pages annotated with metadata conforming to these ontologies. Thus, a crucial question...
SWAP: ontology-based knowledge management with peer-to-peer technology. (2007)
Ehrig, Marc, Tempich, Christoph, Broekstra, Jeen, Harmelen, Frank Van, Sabou, Marta, Siebes, Ronny, ...
Networked graphs are defined in this paper as a small syntactic extension of named graphs in RDF. They allow for the definition of a graph by explicitly listing triples as well as by SPARQL queries...
Adding Formal Semantics to MPEG-7 : Designing a Well-Founded Multimedia Ontology for the Web (2007)
Arndt, Richard, Staab, Steffen, Troncy, Raphael, Hardman, Lynda
Semantic descriptions of non-textual media available on the web can be used to facilitate retrieval and presentation of media assets and documents containing them. While technologies for multimedia...
TwoUse: Integrating UML Models and OWL Ontologies (2007)
Silva Parreiras, Fernando, Staab, Steffen, Winter, Andreas
UML models and OWL ontologies constitute modeling approaches with different strength and weaknesses that make them appropriate for use of specifying different aspects of software systems. In...
OWL SAIQL - an OWL DL query language for ontology extraction (2007)
Er Kubias, Simon Schenk, Steffen Staab, Jeff Z. Pan
Abstract. Existing approaches for querying OWL DL do either only operate on syntactic constructs without taking into account the semantics of OWL or do only have a restricted access to the T-Box. We...
Staab, Steffen, Stuckenschmidt, Heiner
Just like the industrial society of the last century depended on natural resources, today's society depends on information and its exchange. Semantic Web technologies address the problem of...
MOntoMat-Annotizer: Image annotation. linking ontologies and multimedia low-level features (2006)
Kosmas Petridis, Dionysios Anastasopoulos, Carsten Saathoff, Yiannis Kompatsiaris, Steffen Staab
Abstract. Annotations of multimedia documents typically have been pursued in two different directions. Either previous approaches have focused on low level descriptors, such as dominant color, or...
On How to Perform a Gold Standard Based Evaluation of Ontology Learning (2006)
Klaas Dellschaft, Steffen Staab
Abstract. In recent years several measures for the gold standard based evaluation of ontology learning were proposed. They can be distinguished by the layers of an ontology (e.g. lexical term layer...
Ontology Engineering Revisited: an Iterative Case Study with DILIGENT (2006)
Christoph Tempich, H. Sofia Pinto, Steffen Staab
Abstract. Existing mature ontology engineering approaches are based on some basic assumptions that are often violated in practice, in particular in the Semantic Web. Ontologies often need to be built...
SEA: A Lightweight and Extensible Semantic Exchange Architecture (2006)
Thomas Franz, Carsten Saathoff, Olaf Görlitz, Christoph Ringelstein, Steffen Staab
With novel centralized information management systems, users benefit from collective data organization. Centralization, however, also imposes privacy and availability constraints. With this work we...
Incementally Maintaining Materializations of Ontologies Stored in Logic Databases (2005)
Raphael Volz, Steffen Staab, Boris Motik
Abstract. This article presents a technique to incrementally maintain materializations of ontological entailments. Materialization consists in precomputing and storing a set of implicit entailments,...
Bootstrapping Ontology Alignment Methods with APFEL (2005)
Marc Ehrig, Steffen Staab, York Sure
this paper requires training examples. The assistance in their creation is necessary as in a typical ontology alignment setting there are only a small number of really plausible alignments available...
Christoph Tempich, H. Sofia Pinto, York Sure, Steffen Staab
A prerequisite to the success of the Semantic Web are shared ontologies which enable the seamless exchange of information between different parties.
Gimme' The Context: Context-driven Automatic Semantic Annotation with C-PANKOW (2005)
Philipp Cimiano, Günter Ladwig, Steffen Staab
Without the proliferation of formal semantic annotations, the Semantic Web is certainly doomed to failure. In earlier work we presented a new paradigm to avoid this: the 'Self Annotating...
Supervised Learning of an Ontology Alignment Process (2005)
Marc Ehrig, Steffen Staab, York Sure
this paper an ontology consists of both schema and instantiating data. An ontology O is therefore defined through the following tuple: O := (C, HC , RC , HR , I, R I , A). Concepts C of the schema...
Bootstrapping Ontology Alignment Methods with APFEL (2005)
Marc Ehrig, Steffen Staab, York Sure
Ontology alignment is a prerequisite in order to allow for interoperation between different ontologies and many alignment strategies have been proposed to facilitate the alignment task by...
Searching Dynamic Communities with Personal Indexes (2005)
Alexander Löser, Er Löser, Christoph Tempich, Bastian Quilitz, Steffen Staab, Wolf-tilo Balke, ...
Often the challenge of finding relevant information is reduced to find the 'right' people who will answer our question. In this paper we present innovative algorithms called INGA...
Learning Concept Hierarchies from Text with a Guided Hierarchical Clustering Algorithm (2005)
Philipp Cimiano, Steffen Staab
We present an approach for the automatic induction of concept hierarchies from text collections.
acmj054-02 ACM-TRANSACTION April 25, 2005 21:57 (2005)
Supporting Application Development, Daniel Oberle, Steffen Staab, Rudi Studer, Raphael Volz
This article is about an infrastructure that facilitates plug'n'play engineering of ontology-based modules and thus, the development and maintenance of comprehensive Semantic Web...
Economic Reflections on Managing (2005)
Web Services Using, Frank Wolff, Daniel Oberle, Steffen Lamparter, Steffen Staab
In Web Services Management different approaches are discussed. In this paper we analyse three options for Web Service Management: a) Web Services standards descriptions and tools (WS*), b)...
Semantic Management of Web Services (2005)
Daniel Oberle Steffen, Steffen Lamparter, Andreas Eberhart, Steffen Staab
We present semantic management of Web Services as a paradigm that is located between the two extremes of current Web Services standards descriptions and tools, which we abbreviate by WS*, and...
Gimme' The Context: Context-driven Automatic Semantic Annotation with C-PANKOW (2005)
Philipp Cimiano, Günter Ladwig, Steffen Staab
Without the proliferation of formal semantic annotations, the Semantic Web is certainly doomed to failure. In earlier work we presented a new paradigm to avoid this: the 'Self Annotating...
Learning Concept Hierarchies from Text Corpora Using Formal Concept Analysis (2005)
Philipp Cimiano, Andreas Hotho, Steffen Staab
We present a novel approach to the automatic acquisition of taxonomies or concept hierarchies from a text corpus. The approach is based on Formal Concept Analysis (FCA), a method mainly used for the...
Bootstrapping Ontology Alignment Methods with APFEL (2005)
Marc Ehrig, Steffen Staab, York Sure
Abstract. Ontology alignment is a prerequisite in order to allow for interoperation between different ontologies and many alignment strategies have been proposed to facilitate the alignment task by...
Semantic Methods for P2P Query Routing (2005)
Er Löser, Steffen Staab, Christoph Tempich
Abstract. Knowledge sharing in a virtual organization requires a knowledge life cycle including knowledge provisioning, terminology alignment, determination of resource location, query routing, and...
Learning concept hierarchies from text corpora using formal concept analysis (2005)
We present a novel approach to the automatic acquisition of taxonomies or concept hierarchies from a text corpus. The approach is based on Formal Concept Analysis (FCA), a method mainly used for the...
Learning concept hierarchies from text corpora using formal concept analysis (2005)
We present a novel approach to the automatic acquisition of taxonomies or concept hierarchies from a text corpus. The approach is based on Formal Concept Analysis (FCA), a method mainly used for the...
Semantic Methods for P2P Query Routing (2005)
Er Löser, Steffen Staab, Christoph Tempich
Abstract. Knowledge sharing in a virtual organization requires a knowledge life cycle including knowledge provisioning, terminology alignment, determination of resource location, query routing, and...
Learning concept hierarchies from text with a guided agglomerative clustering algorithm (2005)
We present an approach for the automatic induction of concept hierarchies from text collections. We propose a novel guided agglomerative hierarchical clustering algorithm exploiting a hypernym oracle...
04391 Executive Summary -- Semantic Interoperability and Integration (2005)
Kalfoglou, Yannis, Schorlemmer, Marco, Uschold, Michael, Sheth, Amit, Staab, Steffen, Executive Summary
Executive Summary of the Seminar on Semantic Interoperability and Integration held at Schloss Dagstuhl, September 19-24, 2004.
04391 Abstracts Collection -- Semantic Interoperability and Integration (2005)
Kalfoglou, Yannis, Schorlemmer, Marco, Sheth, Amit, Staab, Steffen, Uschold, Michael, Abstracts Collection
From 19.09.04 to 24.09.04, the Dagstuhl Seminar 04391 ``Semantic Interoperability and Integration'' was held in the International Conference and Research Center (IBFI), Schloss Dagstuhl. During the...
Towards the Self-Annotating Web (2004)
Cimiano, Philipp, Handschuh, Siegfried, Staab, Steffen
The success of the Semantic Web depends on the availability of ontologies as well as on the proliferation of web pages annotated with metadata conforming to these ontologies. Thus, a crucial question...
REMINDIN’: Semantic Query Routing in Peer-to-Peer Networks Based on Social Metaphors (2004)
Tempich, Christoph, Staab, Steffen, Wranik, Adrian
Steffen Staab Institute AIFB, University of Karlsruhe D-76128 Karlsruhe, Germany staab@aifb.unikarlsruhe.de Adrian Wranik∗ Institute AIFB, University of Karlsruhe D-76128 Karlsruhe, Germany...
Staab, Steffen, Bhargava, Bharat, Lilien, Leszek, Rosenthal, Arnon, Winslett, Marianne, Sloman, Morris, ...
Trust - "reliance on the integrity, ability, or character of a person or thing" - is pervasive in social systems. We constantly apply it in interactions between people, organizations, animals, and...
Staab, Steffen, Bhargava, Bharat, Lilien, Leszek, Rosenthal, Arnon, Winslett, Marianne, Sloman, Morris, ...
Trust - "reliance on the integrity, ability, or character of a person or thing" - is pervasive in social systems. We constantly apply it in interactions between people, organizations, animals, and...
Emergent Semantics Principles and Issues (2004)
Aberer, Karl, Cudré-Mauroux, Philippe, Ouksel, Aris M., Catarci, Tiziana, Hacid, Mohand-Said, Illarramendi, Arantxa, ...
Emergent Semantics Systems (2004)
Aberer, Karl, Catarci, Tiziana, Cudré-Mauroux, Philippe, Dillon, Tharam S., Grimm, Stephan, Hacid, Mohand-Said, ...
Feature weighting for cooccurrence-based classification of words (2004)
Pekar, Viktor, Krkoska, Michael, Staab, Steffen
Paper presented at International Conference On Computational Linguistics, Geneva, Switzerland, 2004
Staab, Steffen, Bhargava, Bharat, Lilien, Leszek, Rosenthal, Arnon, Winslett, Marianne, Sloman, Morris, ...
Trust - "reliance on the integrity, ability, or character of a person or thing" - is pervasive in social systems. We constantly apply it in interactions between people, organizations, animals, and...
Towards a Quantitative, Platform-Independent Analysis of Knowledge Systems (2004)
Noah S. Friedl, Paul G. Allen, Michael Witbrock, Gavin Matthews, Nancy Salay, Pierluigi Miraglia, ...
The Halo Pilot, a six-month effort to evaluate the state-ofthe-art in applied Knowledge Representation and Reasoning (KRR) systems, collaboratively developed a taxonomy of failures with the goal of...
Bibster - a semantics-based bibliographic peer-to-peer system (2004)
Peter Haase, Jeen Broekstra, Marc Ehrig, Maarten Menken, Michal Plechawski, Pawel Pyszlak, ...
Abstract. This paper describes the design and implementation of Bibster, a Peer-to-Peer system for exchanging bibliographic data among researchers. Bibster exploits ontologies in data-storage, query...
Summary. Ontology Learning greatly facilitates the construction of ontologies by the ontology engineer. The notion of ontology learning that we propose here includes a number of complementary...
On-to-knowledge methodology (OTKM (2004)
York Sure, Steffen Staab, Rudi Studer, Ontoprise Gmbh
In this chapter we present the On-To-Knowledge Methodology (OTKM) for introducing and maintaining ontology based knowledge management applications into enterprises with a focus on Knowledge Processes...
Emergent semantics principles and issues (2004)
Karl Aberer, Tiziana Catarci, Said Hacid, Arantza Illarramendi, Massimo Mecella, ...
Abstract. Information and communication infrastructures underwent a rapid and extreme decentralization process over the past decade: From a world of statically and partially connected central servers...
Emergent Semantics Systems (2004)
Karl Aberer, Tiziana Catarci, Tharam Dillon, Stephan Grimm, Said Hacid, Arantza Illarramendi, ...
Abstract. With new standards like RDF or OWL paving the way for the much anticipated Semantic Web, a new breed of very large scale semantic systems is about to appear. Traditional semantic...
Socialisation in Peer-to-Peer Knowledge Management (2004)
Christoph Schmitz, Steffen Staab, Christoph Tempich
IT support for knowledge management that builds on rather standard information systems architectures, e.g. a Web server with underlying database technologies, has proven beneficial in many situations...
Towards the Self-Annotating Web (2004)
Philipp Cimiano, Siegfried Handschuh, Siegfried H, Steffen Staab
The success of the Semantic Web depends on the availability of ontologies as well as on the proliferation of web pages annotated with metadata conforming to these ontologies. Thus, a crucial question...
Towards a Quantitative, Platform-Independent Analysis of Knowledge Systems (2004)
Noah S. Friedland, Paul G. Allen, Michael Witbrock, Gavin Matthews, Nancy Salay, ...
The Halo Pilot, a six-month effort to evaluate the state-ofthe -art in applied Knowledge Representation and Reasoning (KRR) systems, collaboratively developed a taxonomy of failures with the goal of...
H. Sofia Pinto, Steffen Staab, Christoph Tempich
Ontology engineering processes in truly distributed settings like the Semantic Web or global peer-to-peer systems may not be adequately supported by conventional, centralized ontology engineering...
Developing and Managing Software Components In An Ontology-Based Application Server (2004)
Daniel Oberle, Andreas Eberhart, Steffen Staab, Raphael Volz
Application servers provide many functionalities commonly needed in the development of a complex distributed application. So far, the functionalities have mostly been developed and managed with the...
Bibster - A Semantics-Based Bibliographic Peer-to-Peer System (2004)
Peter Haase, Jeen Broekstra, Marc Ehrig, Maarten Menken, Peter Mika, Mariusz Olko, ...
This paper describes the design and implementation of Bibster, a Peer-to-Peer system for exchanging bibliographic data among researchers.
REMINDIN': Semantic Query Routing in Peer-to-Peer Networks Based on Social Metaphors (2004)
Christoph Tempich, Steffen Staab, Adrian Wranik
In peer-to-peer networks, finding the appropriate answer for an information request, such as the answer to a query for RDF(S) data, depends on selecting the right peer in the network. We here...
Bibster - A Semantics-Based Bibliographic Peer-to-Peer System (2004)
Peter Haase, Jeen Broekstra, Marc Ehrig, Maarten Menken, Peter Mika, Michal Plechawski, ...
This paper describes the design and implementation of Bibster, a Peer-to-Peer system for exchanging bibliographic data among researchers. Bibster exploits...
If you can spot one trend in intelligent systems, I think it would be the issue of trust. Ive seen many paper titles and recently some workshops that involve the term trust. At the same time,...
Emergent Semantics Systems (2004)
Karl Aberer, Tiziana Catarci, Philippe Cudré-Mauroux, Tharam Dillon, Stephan Grimm, Mohand-Said Hacid, ...
With new standards like RDF or OWL paving the way for the much anticipated Semantic Web, a new breed of very large scale semantic systems is about to appear. Traditional semantic reconciliation...
Efficiency of Ontology Mapping Approaches (2004)
Semi-)automatic mapping --- also called (semi-)automatic alignment --- of ontologies is a core task to achieve interoperability when two agents or services use different ontologies. In the existing...
Christoph Tempich, Marc Ehrig, Christiaan Fluit, Peter Haase, Esteve Llado Marti, Michal Plechawski, ...
Knowledge management solutions relying on central repositories sometimes have not met expectations, since users often create knowledge ad-hoc using their individual vocabulary and using their own...
Comparing Conceptual, Divisive and Agglomerative Clustering for Learning Taxonomies from Text (2004)
Philipp Cimiano, Andreas Hotho, Steffen Staab
The application of clustering methods for automatic taxonomy construction from text requires knowledge about the tradeoff between, (i), their effectiveness (quality of result), (ii), efficiency...
Developing and managing software components in an ontology-based application server (2004)
Daniel Oberle, Andreas Eberhart, Steffen Staab, Raphael Volz
Abstract. Application servers provide many functionalities commonly needed in the development of a complex distributed application.So far, the functionalities have mostly been developed and managed...
Developing and managing software components in an ontology-based application server (2004)
Daniel Oberle, Andreas Eberhart, Steffen Staab, Raphael Volz
Abstract. Application servers provide many functionalities commonly needed in the development of a complex distributed application.So far, the functionalities have mostly been developed and managed...
XAROP: A Midterm Report on Introducing a Decentralized Semantics based Application (2004)
Christoph Tempich, Marc Ehrig, Christiaan Fluit, Peter Haase, Esteve Lladó, Michal Plechawski, ...
Abstract. Knowledge management solutions relying on central repositories sometimes have not met expectations, since users often create knowledge ad-hoc using their individual vocabulary and using...
Towards a Quantitative, Platform-Independent Analysis of Knowledge Systems (2004)
Noah S. Friedl, Paul G. Allen, Michael Witbrock, Gavin Matthews, Nancy Salay, Pierluigi Miraglia, ...
The Halo Pilot, a six-month effort to evaluate the state-ofthe-art in applied Knowledge Representation and Reasoning (KRR) systems, collaboratively developed a taxonomy of failures with the goal of...
Bibster - a semantics-based bibliographic peer-to-peer system (2004)
Peter Haase, Björn Schnizler, Jeen Broekstra, Marc Ehrig, Frank Van, Maarten Menken, ...
Abstract. This paper describes Bibster, a Peer-to-Peer system for exchanging bibliographic metadata among researchers. We show how Bibster exploits ontologies in data-representation, query...
S.: Annotation, composition and invocation of semantic web services (2004)
Sudhir Agarwal, Siegfried H, Steffen Staab
The way that web services are currently being developed places them beside rather than within the existing World Wide Web. In this paper we present an approach that combines the strength of the World...
Emergent Semantics Systems (2004)
Karl Aberer, Tiziana Catarci, Tharam Dillon, Stephan Grimm, Said Hacid, Arantza Illarramendi, ...
Abstract. With “peer production ” becoming commonplace and new standards like RDF or OWL paving the way for the much anticipated semantic web, a new breed of very large scale semantic systems is...
Christoph Tempich, Marc Ehrig, Peter Haase, Steffen Staab, Contactperson Steffen Staab, Contactperson Adelma Stolbun, ...
Executive Summary. SWAP EU IST-2001-34103 Project Deliverable D4.5 (WP4.5) P-Up This paper describes the tool P-UP. P-UP is an extended version of the OntoScrape tool. In addition to the functionally...
Comparing Conceptual, Divisive and Agglomerative Clustering for Learning Taxonomies from Text (2004)
Philipp Cimiano, Andreas Hotho, Steffen Staab
The application of clustering methods for automatic taxonomy construction from text requires knowledge about the tradeoff between, (i), their effectiveness (quality of result), (ii), efficiency...
Learning Taxonomic Relations from Heterogeneous Evidence (2004)
Philipp Cimiano, Aleksander Pivk, Lars Schmidt-Thieme, Steffen Staab
We present a novel approach to the automatic acquisition of taxonomic relations. The main difference to earlier approaches is that we do not only consider one single source of evidence, i.e. a...
Sofia Pinto, Steffen Staab, York Sure, Christoph Tempich
Knowledge management solutions relying on central repositories sometimes have not met expectations, since users often create knowledge ad-hoc using their individual vocabulary and using their own...
Raphael Volz, Siegfried Handschuh, Siegfried H, Schuh A, Steffen Staab
The success of the Semantic Web crucially depends on the easy creation, integration, and use of semantic data. For this purpose, we consider an integration scenario that defies core assumptions of...
Emergent Semantics Principles and Issues (2004)
Karl Aberer, Philippe Cudré-Mauroux, Aris M. Ouksel, Tiziana Catarci, Mohand-Said Hacid, ...
Information and communication infrastructures underwent a rapid and extreme decentralization process over the past decade: From a world of statically and partially connected central servers rose an...
Clustering concept hierarchies from text (2004)
We present a novel approach to learning taxonomies or concept hierarchies from text. The approach is based on Formal Concept Analysis, a method mainly used for the analysis of data, i.e. for...
Handschuh, Siegfried, Staab, Steffen, Volz, Raphael
The success of the Semantic Web crucially depends on the easy creation, integration and use of semantic data. For this purpose, we consider an integration scenario that defies core assumptions of...
SWAP: ontology-based knowledge management with peer-to-peer technology. (2003)
Ehrig, Marc, Tempich, Christoph, Broekstra, Jeen, Harmelen, Frank Van, Sabou, Marta, Siebes, Ronny, ...
Neurons, Viscose Fluids, Freshwater Polyp Hydra-and Self-Organizing Information Systems (2003)
Staab, Steffen, Heylighen, F., Gershenson, C., William Flake, G., Pennock, D. M., Fain, D. C., ...
The Courseware Watchdog: an ontology-based tool for finding and organizing learning material (2003)
Tane, Julien, Schmitz, Christoph, Stumme, Gerd, Staab, Steffen, Studer, Rudi
Auch erschienen in: David, Klaus u.a. (Hrsg.): Mobiles Lernen und Forschen. Kassel : Kassel Univ. Press, 2003. S. 93-104. ISBN 3-89958-521-6
Explaining text clustering results using semantic structures (2003)
Andreas Hotho, Steffen Staab, Gerd Stumme
Abstract. Common text clustering techniques offer rather poor capabilities for explaining to their users why a particular result has been achieved. They have the disadvantage that they do not relate...
KAON SERVER - A Semantic Web Management System (2003)
The growing use of ontologies in applications creates the need for an infrastructure that allows developers to more easily combine different software modules like ontology stores, editors, or...
KAON SERVER - A Semantic Web Management System (2003)
The growing use of ontologies in applications creates the need for an infrastructure that allows developers to more easily combine different software modules like ontology stores, editors, or...
Explaining text clustering results using semantic structures (2003)
Andreas Hotho, Steffen Staab, Gerd Stumme
Abstract. Common text clustering techniques offer rather poor capabilities for explaining to their users why a particular result has been achieved. They have the disadvantage that they do not relate...
A Metadata Model for Semantics-Based Peer-to-Peer Systems (2003)
Jeen Broekstra, Marc Ehrig, Peter Haase, Frank Van Harmelen, Marta Sabou, Ronny Siebes, ...
Abstract. Peer-to-Peer systems are a new paradigm for information sharing and some systems have successfully been deployed. It has been argued that current Peer-to-Peer systems suffer from the lack...
Wordnet improves text document clustering (2003)
Andreas Hotho, Steffen Staab, Gerd Stumme
Text document clustering plays an important role in providing intuitive navigation and browsing mechanisms by organizing large amounts of information into a small number of meaningful clusters. The...
The swap data and metadata model for semantics-based peer-to-peer systems (2003)
Marc Ehrig, Peter Haase, Ronny Siebes, Steffen Staab, Rudi Studer, Christoph Tempich
Abstract. Peer-to-Peer systems are a new paradigm for information sharing and some systems have successfully been deployed. It has been argued that current Peer-to-Peer systems suffer from the lack...
SEmantic portAL - The SEAL approach (2003)
Er Maedche, Steffen Staab, Nenad Stojanovic, Rudi Studer
The core idea of the Semantic Web is to make information accessible to human and software agents on a semantic basis. Hence, web sites may feed directly from the Semantic Web exploiting the...
Surfing the service web (2003)
Sudhir Agarwal, Siegfried H, Steffen Staab
Abstract. The way that web services are currently being developed places them beside rather than within the existing World Wide Web. In this paper we present an approach that combines the strength of...
Incremental Maintenance of Materialized Ontologies (2003)
Raphael Volz, Steffen Staab, Boris Motik
Abstract. This paper discusses the incremental maintenance of materialized ontologies in a rule-enabled Semantic Web. Materialization allows to speed up query processing by explicating the implicit...
KAON: The karlsruhe ontology and semantic web meta project (2003)
The Karlsruhe Ontology, Er Maedche, Steffen Staab
Introduction The Semantic Web is composed of applications that share, exchange and link self-describing data (instead of text) via the World Wide Web rendering it a kind of global, distributed...
Text Clustering Based on Background Knowledge (2003)
Andreas Hotho, Andreas Hotho, Steffen Staab, Steffen Staab, Gerd Stumme, Gerd Stumme
Text document clustering plays an important role in providing intuitive navigation and browsing mechanisms by organizing large amounts of information into a small number of meaningful clusters....
FONTE - Factorizing ONTology Engineering complexity (2003)
Because it is difficult to engineer a complex ontology with time, we here consider a method that allows for factorizing the complexity of the engineering process, FONTE (Factorizing ONTology...
Deriving Concept Hierarchies from Text by Smooth Formal Concept Analysis (2003)
Philipp Cimiano, Steffen Staab, Julien Tane
We present a novel approach to the automatic acquisition of taxonomies or concept hierarchies from texts based on Formal Concept Analysis.
Learning Taxonomic Relations from Heterogeneous Sources of Evidence (2003)
Philipp Cimiano, Aleksander Pivk, Lars Schmidt-Thieme, Steffen Staab
We present a novel approach to learning taxonomic relations between terms by considering multiple and heterogeneous sources of evidence. In order to derive an optimal combination of these sources, we...
OntoEdit: Multifaceted Inferencing for Ontology Engineering (2003)
York Sure, Juergen Angele, Steffen Staab
Ontologies now play an important role for many knowledge-intensive applications for which they provide a source of precisely defined terms. The terms are used for concise communication across people...
Explaining Text Clustering Results Using Semantic Structures (2003)
Andreas Hotho, Steffen Staab, Gerd Stumme
Common text clustering techniques offer rather poor capabilities for explaining to their users why a particular result has been achieved. They have the disadvantage that they do not relate...
A Metadata Model for Semantics-Based Peer-to-Peer Systems (2003)
Jeen Broekstra, Marc Ehrig, Peter Haase, Frank Van Harmelen, Arjohn Kampman, Marta Sabou, ...
Peer-to-Peer systems are a new paradigm for information sharing and some systems have successfully been deployed. It has been argued that current Peer-to-Peer systems su#er from the lack of semantics.
SEmantic portAL - The SEAL approach (2003)
Er Maedche, Steffen Staab, Nenad Stojanovic, Rudi Studer
The core idea of the Semantic Web is to make information accessible to human and software agents on a semantic basis. Hence, web sites may feed directly from the Semantic Web exploiting the...
Wordnet improves Text Document Clustering (2003)
Andreas Hotho, Steffen Staab, Gerd Stumme
Text document clustering plays an important role in providing intuitive navigation and browsing mechanisms by organizing large amounts of information into a small number of meaningful clusters. The...
The Courseware Watchdog: an Ontology-based Tool for Finding and Organizing Learning Material (2003)
Julien Tane, Christoph Schmitz, Gerd Stumme, Steffen Staab, Rudi Studer
Topics in education are changing with an ever faster pace. E-Learning resources tend to be more and more decentralised. Users need increasingly to be able to use the resources of the web. For this,...
Surfing the service web (2003)
Sudhir Agarwal, Siegfried H, Steffen Staab
Abstract. The way that web services are currently being developed places them beside rather than within the existing World Wide Web. In this paper we present an approach that combines the strength of...
A Metadata Model for Semantics-Based Peer-to-Peer Systems (2003)
Jeen Broekstra, Marc Ehrig, Peter Haase, Frank Van Harmelen, Marta Sabou, Ronny Siebes, ...
Abstract. Peer-to-Peer systems are a new paradigm for information sharing and some systems have successfully been deployed. It has been argued that current Peer-to-Peer systems suffer from the lack...
Incremental Maintenance of Materialized Ontologies (2003)
Raphael Volz, Steffen Staab, Boris Motik
This paper discusses the incremental maintenance of materialized ontologies in a rule-enabled Semantic Web. Materialization allows to speed up query processing by explicating the implicit entailments...
The Courseware Watchdog: an ontology-based tool for finding and organizing learning material (2003)
Tane, Julien, Schmitz, Christoph, Stumme, Gerd, Staab, Steffen, Studer, Rudi
Auch erschienen in: David, Klaus u.a. (Hrsg.): Mobiles Lernen und Forschen. Kassel : Kassel Univ. Press, 2003. S. 93-104. ISBN 3-89958-521-6
S-CREAM Semi-automatic CREAtion of Metadata (2002)
Handschuh, Dr. Siegfried, Staab, Dr. Steffen, Ciravegna, Dr. Fabio
Richly interlinked, machine-understandable data constitute the basis for the Semantic Web. We provide a framework, S-CREAM,that allows for creation of metadata and is trainable for a speci¯c domain....
Authoring and Annotation of Web Pages in CREAM (2002)
Handschuh, Siegfried, Staab, Steffen
Richly interlinked,machine-understandable data constitute the basis for the Semantic Web. We provide a framework, CREAM, that allows for creation of metadata. While the annotation mode of CREAM...
Ontology learning part one - on discovering taxonomic relations from the Web (2002)
Maedche, Alexander, Pekar, Viktor, Staab, Steffen
In Proceedings of the Web Intelligence conference, pages 301-322. Springer Verlag, 2002.
SEAL — Tying Up Information Integration and Web Site Management by Ontologies (2002)
Er Maedche, Steffen Staab, Rudi Studer, York Sure, Raphael Volz
Community web sites exhibit two dominating properties: They often need to integrate many different information sources and they require an adequate web site management system. SEAL (SEmantic portAL)...
Ontoedit: Collaborative ontology development for the semantic web (2002)
York Sure, Michael Erdmann, Juergen Angele, Steffen Staab, Rudi Studer, Dirk Wenke
Abstract. Ontologies now play an important role for enabling the semantic web. They provide a source of precisely defined terms e.g. for knowledge-intensive applications. The terms are used for...
Accessing distributed learning repositories through a courseware watchdog (2002)
Christoph Schmitz, Steffen Staab, Rudi Studer, Gerd Stumme, Julien Tane
Measuring Similarity between Ontologies (2002)
Abstract. Ontologies now play an important role for many knowledge-intensive applications for which they provide a source of precisely defined terms. However, with their wide-spread usage there come...
Accessing distributed learning repositories through a courseware watchdog (2002)
Christoph Schmitz, Steffen Staab, Rudi Studer, Gerd Stumme, Julien Tane
Semantic Web Service Architecture – Evolving Web Service Standards toward the Semantic Web (2002)
Tanja Sollazzo, Siegfried H, Steffen Staab, Martin Frank, Nenad Stojanovic
The importance of Web services has been recognized and widely accepted by industry and academic research. However, the two worlds have proposed solutions that progress along different dimensions....
Ontoedit: Collaborative ontology development for the semantic web (2002)
York Sure, Michael Erdmann, Juergen Angele, Steffen Staab, Rudi Studer, Dirk Wenke
Abstract. Ontologies now play an important role for enabling the semantic web. They provide a source of precisely defined terms e.g. for knowledge-intensive applications. The terms are used for...
Kaon - towards a large scale semantic web (2002)
Erol Bozsak, Marc Ehrig, Siegfried H, Andreas Hotho, Er Maedche, Boris Motik, ...
Abstract. The Semantic Web will bring structure to the content of Web pages, being an extension of the current Web, in which information is given a welldefined meaning. Especially within e-commerce...
Ontoedit: Collaborative ontology development for the semantic web (2002)
York Sure, Michael Erdmann, Juergen Angele, Steffen Staab, Rudi Studer, Dirk Wenke
Abstract. Ontologies now play an important role for enabling the semantic web. They provide a source of precisely defined terms e.g. for knowledge-intensive applications. The terms are used for...
OntoEdit: Guiding Ontology Development by Methodology and Inferencing (2002)
York Sure, Juergen Angele, Steffen Staab
Abstract. Ontologies now play an important role for many knowledge-intensive applications for which they provide a source of precisely defined terms. The terms are used for concise communication...
Measuring Similarity between Ontologies (2002)
Abstract. Ontologies now play an important role for many knowledge-intensive applications for which they provide a source of precisely defined terms. However, with their wide-spread usage there come...
Kaon - towards a large scale semantic web (2002)
Erol Bozsak, Marc Ehrig, Siegfried H, Andreas Hotho, Er Maedche, Boris Motik, ...
Abstract. The Semantic Web will bring structure to the content of Web pages, being an extension of the current Web, in which information is given a welldefined meaning. Especially within e-commerce...
Text Clustering Based on Good Aggregations (2002)
Andreas Hotho, Er Maedche, Steffen Staab
Text clustering typically involves clustering in a high dimensional space, which appears difficult with regard to virtually all practical settings. In addition, given a particular clustering result...
Bootstrapping an ontology-based information extraction system (2002)
Er Maedche, Günter Neumann, Steffen Staab
Abstract. Automatic intelligent web exploration will benefit from shallow information extraction techniques if the latter can be brought to work within many different domains. The major bottleneck...
SEAL — Tying Up Information Integration and Web Site Management by Ontologies (2002)
Er Maedche, Steffen Staab, Rudi Studer, York Sure, Raphael Volz
Community web sites exhibit two dominating properties: They often need to integrate many different information sources and they require an adequate web site management system. SEAL (SEmantic portAL)...
Bootstrapping an ontology-based information extraction system (2002)
Alexander Maedche, Günter Neumann, Steffen Staab
Automatic intelligent web exploration will benefit from shallow information extraction techniques if the latter can be brought to work within many different domains. The major bottleneck for this,...
OntoEdit:Coldit:2HH veOntol62 Develwzz2 for the Semantic Web York Sure (2002)
Mi Zz Erdmann, York Sure, Michael Erdmann, Juergen Angele, Steffen Staab, Rudi Studer, ...
OntologiZ now play aniUCxxC4U role forenabliw thesemanti web. They proviU a source ofpreci4CU defined terms e.g. for knowledge-i-0Zfiz ve appliU-0Zfizw The terms are used forconci4 communiU-03fi...
OntoEdit: Guiding Ontology Development by (2002)
Methodology And Inferencing, York Sure, Juergen Angele, Steffen Staab
Ontologies now play an important role for many knowledge-intensive applications for which they provide a source of precisely defined terms. The terms are used for concise communication across people...
Bootstrapping an ontology-based information extraction system (2002)
Er Maedche, Günter Neumann, Steffen Staab
Abstract. Automatic intelligent web exploration will benefit from shallow information extraction techniques if the latter can be brought to work within many different domains. The major bottleneck...
Kaon - towards a large scale semantic web (2002)
Erol Bozsak, Marc Ehrig, Siegfried H, Andreas Hotho, Er Maedche, Boris Motik, ...
Abstract. The Semantic Web will bring structure to the content of Web pages, being an extension of the current Web, in which information is given a welldefined meaning. Especially within e-commerce...
Wissensmanagement mit Ontologien und Metadaten / (2002)
Enth. 5 Sonderabdr. aus verschiedenen Zeitschr. - Beitr. teilw. dt., teilw. engl.
SEAL-II — the soft spot between richly structured and unstructured knowledge (2001)
Andreas Hotho, Alexander Maedche, Steffen Staab, Rudi Studer
Abstract: Recently, the idea of semantic portals on the Web or on the intranet has gained popularity. Their key concern is to allow a community of users to present and share knowledge in a particular...
eLearning in the Semantic Web (2001)
Steffen Staab, Adam Souzis, Adam Souzis, Liminal Systems
This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying...
Ontology-based text document clustering (2001)
Andreas Hotho, Er Maedche, Steffen Staab
Text clustering typically involves clustering in a high dimensional space, which appears difficult with regard to virtually all practical settings. In addition, given a particular clustering result...
Engineering ontologies using semantic patterns (2001)
Steffen Staab, Michael Erdmann Alex, Er Maedche
www.aifb.uni-karlsruhe.de/WBS/ In this paper, we present a methodology for engineering semantic knowledge such that these semantic structures are easier reusable when switching between several...
elearning based on the semantic web (2001)
Ljiljana Stojanovic, Steffen Staab, Rudi Studer
Abstract: eLearning is efficient, task relevant and just-in-time learning grown from the learningrequirements of the new, dynamically changing, distributed business world. The term „Semantic Web...
SEAL-II — the soft spot between richly structured and unstructured knowledge (2001)
Andreas Hotho, Er Maedche, Steffen Staab, Rudi Studer
Abstract: Recently, the idea of semantic portals on the Web or on the intranet has gained popularity. Their key concern is to allow a community of users to present and share knowledge in a particular...
Engineering ontologies using semantic patterns (2001)
Steffen Staab, Michael Erdmann Alex, Er Maedche, Ontoprise Gmbh
www.ontoprise.com Interoperability is one of the major design objectives when building applications for B2B and Semantic Web applications. In this paper, we present a methodology for engineering...
An annotation framework for the semantic web (2001)
Steffen Staab, Er Maedche, Siegfried H
Creating metadata by annotating documents is one of the major techniques for putting machine understandable data on the Web. Though there exist many tools for annotating web pages, few of them fully...
Ontology Learning for the Semantic Web (2001)
The Semantic Web relies heavily on the formal ontologies that structure underlying data for the purpose of comprehensive and transportable machine understanding. Therefore, the success of the...
Engineering ontologies using semantic patterns (2001)
Steffen Staab, Michael Erdmann, Er Maedche
In this paper, we present a methodology for engineering semantic knowledge such that these semantic structures are easier reusable when switching between several representation languages. For this...
Comparing ontologies - similarity measures and a comparison study (2001)
Er Maedche, Er Maedche, Steffen Staab, Steffen Staab
Ontologies serve as a means for communication at a semantic level. However, to be able to effectively communicate it is first necessary to determine agreement about the underlying ontological...
Knowledge portals — ontologies at work (2001)
Ca. 7200 words Knowledge portals provide views onto domain-specific information on the World Wide Web, thus facilitating their users to find relevant, domain-specific information. The construction of...
Learning ontologies for the semantic web (2001)
The Semantic Web relies heavily on the formal ontologies that structure underlying data for the purpose of comprehensive and transportable machine understanding. Therefore, the success of the...
An annotation framework for the semantic web (2001)
Steffen Staab, Er Maedche, Siegfried H
Creating metadata by annotating documents is one of the major techniques for putting machine understandable data on the Web. Though there exist many tools for annotating web pages, few of them fully...
An annotation framework for the semantic web (2001)
Steffen Staab, Er Maedche, Siegfried H
Creating metadata by annotating documents is one of the major techniques for putting machine understandable data on the Web. Though there exist many tools for annotating web pages, few of them fully...
SEAL -- a framework for developing SEmantic web portALs (2001)
Alexander Maedche, Steffen Staab, Nenad Stojanovic, Rudi Studer, York Sure
The core idea of the Semantic Web is to make information accessible to human and software agents on a semantic basis. Hence, web sites may feed directly from the Semantic Web exploiting the...
IEEE IEEE INTELLIGENT SYSTEMS Knowledge Processes (2001)
And Ontologies Steffen, Steffen Staab, Rudi Studer, Ontoprise Gmbh, Hans-peter Schnurr, ...
this article, we present an approach for ontology -based KM that includes a suite of ontologybased tools as well as a methodology for developing ontology-based KM systems. Our approach, shown in...
EDUTELLA: Searching and Annotating Resources (2001)
Wolfgang Nejdl, Boris Wolf, Steffen Staab, Julien Tane
P2P applications for searching and exchanging information over the Web have become increasingly popular. This has lead to a number of (usually thematically) focused communities, which allow efficient...
a framework for developing semantic web portals (2001)
Er Maedche, Steffen Staab, Nenad Stojanovic, Rudi Studer
Abstract. The core idea of the Semantic Web is to make information accessible to human and software agents on a semantic basis. Hence, web sites may feed directly from the Semantic Web exploiting the...
Knowledge portals — ontologies at work (2001)
Ca. 7200 words Knowledge portals provide views onto domain-specific information on the World Wide Web, thus facilitating their users to find relevant, domain-specific information. The construction of...
An annotation framework for the semantic web (2001)
Steffen Staab, Er Maedche, Siegfried H
Creating metadata by annotating documents is one of the major techniques for putting machine understandable data on the Web. Though there exist many tools for annotating web pages, few of them fully...
An annotation framework for the semantic web (2001)
Steffen Staab, Er Maedche, Siegfried H
Creating metadata by annotating documents is one of the major techniques for putting machine understandable data on the Web. Though there exist many tools for annotating web pages, few of them fully...
Engineering ontologies using semantic patterns (2001)
Steffen Staab, Michael Erdmann Alex, Er Maedche, Ontoprise Gmbh
www.ontoprise.com Interoperability is one of the major design objectives when building applications for B2B and Semantic Web applications. In this paper, we present a methodology for engineering...
Ontology Learning for the Semantic Web (2001)
The Semantic Web relies heavily on the formal ontologies that structure underlying data for the purpose of comprehensive and transportable machine understanding. Therefore, the success of the...
SEAL-II — the soft spot between richly structured and unstructured knowledge (2001)
Andreas Hotho, Alexander Maedche, Steffen Staab, Rudi Studer
Abstract: Recently, the idea of semantic portals on the Web or on the intranet has gained popularity. Their key concern is to allow a community of users to present and share knowledge in a particular...
Grading knowledge [Elektronische Ressource] : extracting degree information from texts / (2000)
Lizenzpflichtig.
Creating Metadata for the Semantic Web - A Annotation Environment and its Evaluation (2000)
Steffen Staab, Er Maedche, Siegfried H
Creating metadata by annotating documents is one of the major techniques for putting machine understandable data on the Web. Though there exist many tools for annotating web pages, few of them fully...
Steffen Staab, Michael Erdmann, Er Maedche
...Instead of asking machines to understand people’s language, it involves asking people to make the extra effort.... T. Berners-Lee, 2000, about the concept of machine-understandable documents The...
The Text-to-Onto Ontology Learning Environment (2000)
Abstract Ontologies have become an important means for structuring information and information systems and, hence, important in knowledge as well as in software engineering. However, there remains...
An information food chain for advanced applications on the www (2000)
Stefan Decker, Jan Jannink, Prasenjit Mitra, Gio Wiederhold, Steffen Staab, Rudi Studer
The Internet and especially the World Wide Web are growing at a tremendous rate. More and more information is becoming directly available for human consumption. But humans have a limited information...
Situation and Perspective of Knowledge Engineering (2000)
Rudi Studer, Stefan Decker, Dieter Fensel, Steffen Staab
. Knowledge Engineering was in the past primarily concerned with building and developing knowledge-based systems, an objective which puts Knowledge Engineering in a niche of the world-wide research...
An Information Food Chain for Advanced Applications on the WWW (2000)
Stefan Decker, Jan Jannink, Prasenjit Mitra, Gio Wiederhold, Steffen Staab, Rudi Studer
The Internet and especially the World Wide Web are growing at a tremendous rate. More and more information is becoming directly available for human consumption. But humans have a limited information...
Discovering Conceptual Relations from Text (2000)
Alexander Maedche, Er Maedche, Steffen Staab
. Non-taxonomic relations between concepts appear as a major building block in common ontology definitions. In fact, their definition consumes much of the time needed for engineering an ontology. We...
Ontology-Oriented Information Extraction and Integration (2000)
Alexander Mädche, Steffen Staab, Rudi Studer, Free Text
ualization common to varying information sources. Thus, ontologies offer themselves as (partial) solutions to the problems of extracting information and providing it to the user (or a well-known...
Discovering Conceptual Relations from Text (2000)
Alexander Maedche, Steffen Staab
. Non-taxonomic relations between concepts appear as a major building block in common ontology definitions. In fact, their definition consumes much of the time needed for engineering an ontology. We...
An Extensible Approach for Modeling Ontologies in RDF(S) (2000)
Steffen Staab, Michael Erdmann, Alexander Mädche, Er Maedche, Stefan Decker
. RDF(S) 1 constitutes a newly emerging standard for metadata that is about to turn the World Wide Web into a machine-understandable knowledge base. It is an XML application that allows for the...
AI for the Web - Ontology-based Community Web Portals (2000)
Steffen Staab, Jürgen Angele, Stefan Decker, Michael Erdmann, Andreas Hotho, Alexander Maedche, ...
Community web portals serve as portals for the information needs of particular communities on the web. We here discuss how a comprehensive, ontology-based approach for building and maintaining a...
Ontology Engineering beyond the Modeling of Concepts and Relations (2000)
Steffen Staab, Alexander Mädche
This papers presents an approach for modeling largescale ontologies. We extend well-established methods for modeling concepts and relations by transportable methods for modeling ontological axioms....
The Text-to-Onto Ontology Learning Environment (2000)
Abstract Ontologies have become an important means for structuring information and information systems and, hence, important in knowledge as well as in software engineering. However, there remains...
Dieter Fensel, Andreas Witt, Jürgen Angele, Stefan Decker, Michael Erdmann, Hans-peter Schnurr, ...
Abstract. On2broker provides brokering services to improve access to heterogeneous, distributed and semistructured information sources as they are presented in the World Wide Web. It relies on the...
Steffen Staab, Michael Erdmann, Er Maedche, Stefan Decker
Abstract. RDF(S) 1 constitutes a newly emerging standard for metadata that is about to turn the World Wide Web into a machine-understandable knowledge base. It is an XML application that allows for...
Knowledge and business processes: Approaching an integration (1999)
Steffen Staab, Hans-peter Schnurr
Abstract: This paper describes a principled approach towards creating an IT-support environment for knowledge workers. Starting in the analysis phase our approach paves the way for putting an...
On2broker: Semantic-based access to information sources at the www (1999)
Dieter Fensel, Jrgen Angele, Stefan Decker, Michael Erdmann, Hans-peter Schnurr, Steffen Staab, ...
Abstract. On2broker provides brokering services to improve access to heterogeneous, distributed and semistructured information sources as they are presented in the World Wide Web. It relies on the...
On2broker: Semantic-based access to information sources at the WWW (1999)
Dieter Fensel Jrgen, Dieter Fensel, Jrgen Angele, Stefan Decker, Michael Erdmann, Hans-peter Schnurr, ...
. On2broker provides brokering services to improve access to heterogeneous, distributed and semistructured information sources as they are presented in the World Wide Web. It relies on the use of...
An Architecture for Recovering Business Events Bottom-up (1999)
Thomas Barnekow, Steffen Staab, Jürgen Ziegler, Rudi Studer
this paper, we address one aspect of the integration problem, namely the detection of complex events
A Proactive Inferencing Agent for Desk Support (1999)
Hans-peter Schnurr, Steffen Staab
We describe an approach towards integrating the semantics of semi-structured documents with tasksupport for (weakly-structured) business processes and proactive inferencing capabilities of a desk...
On2broker in a Nutshell (1999)
Dieter Fensel Andreas, Andreas Witt, Jrgen Angele, Stefan Decker, Michael Erdmann, Hans-peter Schnurr, ...
. On2broker provides brokering services to improve access to heterogeneous, distributed and semistructured information sources as they are presented in the World Wide Web. It relies on the use of...
Ontology-based Process Support (1999)
Hans-peter Schnurr, Steffen Staab, Rudi Studer
This paper describes a principled approach towards creating an IT-support environment for knowledge workers. Starting in the analysis phase our approach paves the way for putting an intelligent...
A Generic Architectural Framework for Text Knowledge Acquisition (1999)
Alexander Mädche, Günter Neumann, Steffen Staab
As knowledge engineering matures and the amount of textual ressources grows, the pressure for (semi-)automatic acquisition of knowledge structures from texts increases drastically. With automatic...
On2broker: Semantic-Based Access to Information Sources at the WWW (1999)
Dieter Fensel, Jürgen Angele, Stefan Decker, Michael Erdmann, Hans-peter Schnurr, Steffen Staab, ...
On2broker provides brokering services to improve access to heterogeneous, distributed and semistructured information sources as they are presented in the World Wide Web. It relies on the use of...
On2broker in a Nutshell (1999)
Dieter Fensel, Andreas Witt, Jürgen Angele, Stefan Decker, Michael Erdmann, Hans-peter Schnurr, ...
. On2broker provides brokering services to improve access to heterogeneous, distributed and semistructured information sources as they are presented in the World Wide Web. It relies on the use of...
On2broker: Semantic-Based Access to Information Sources at the WWW (1999)
Dieter Fensel, Jürgen Angele, Stefan Decker, Michael Erdmann, Hans-peter Schnurr, Steffen Staab, ...
. On2broker provides brokering services to improve access to heterogeneous, distributed and semistructured information sources as they are presented in the World Wide Web. It relies on the use of...
GETESS - Searching the Web Exploiting German Texts (1999)
Steffen Staab, Christian Braun, Ilvio Bruder, Antje Düsterhöft, Andreas Heuer, Meike Klettke, ...
. We present an intelligent information agent that uses semantic methods and natural language processing capabilites in order to gather tourist information from the WWW and present it to the human...
Scalable temporal reasoning (1999)
We introduce two mechanisms for scaling computations in the framework of temporal reasoning. The first one addresses abstraction at the methodological level. Operators are defined that engender...
GETESS — searching the web exploiting german texts (1999)
Steffen Staab, Christian Braun, Ilvio Bruder, Antje Düsterhöft, Andreas Heuer, Meike Klettke, ...
Abstract. We present an intelligent information agent that uses semantic methods and natural language processing capabilites in order to gather tourist information from the WWW and present it to the...
A system for facilitating and enhancing web search (1999)
Steffen Staab, Christian Braun, Ilvio Bruder, Antje Düsterhöft, Andreas Heuer, Meike Klettke, ...
4 Informatik, Univ. Rostock We present a system that uses semantic methods and natural language processing capabilites in order to provide comprehensive and easy-to-use access to tourist information...
On2broker: Semantic-based access to information sources at the www (1999)
Dieter Fensel, Jürgen Angele, Stefan Decker, Michael Erdmann, Hans-peter Schnurr, Steffen Staab, ...
Abstract. On2broker provides brokering services to improve access to heterogeneous, distributed and semistructured information sources as they are presented in the World Wide
GETESS — searching the web exploiting german texts (1999)
Steffen Staab, Christian Braun, Ilvio Bruder, Antje Düsterhöft, Andreas Heuer, Meike Klettke, ...
Abstract. We present an intelligent information agent that uses semantic methods and natural language processing capabilites in order to gather tourist information from the WWW and present it to the...
GETESS — searching the web exploiting german texts (1999)
Steffen Staab, Christian Braun, Ilvio Bruder, Antje Düsterhöft, Andreas Heuer, Meike Klettke, ...
Abstract. We present an intelligent information agent that uses semantic methods and natural language processing capabilites in order to gather tourist information from the WWW and present it to the...
On Non-Binary Temporal Relations (1998)
Freiburg Im Breisgau, Steffen Staab, Steffen Staab
I present a new approach towards temporal reasoning that generalizes from the temporal relations commonly used in Allen's qualitative interval calculus and in quantitative temporal constraint...
Freiburg Im Breisgau, Steffen Staab, Steffen Staab, Steffen Staab, Udo Hahn, Udo Hahn, ...
We specify a model for the conceptual interpretation of relative adjectives (like "big"), which covers a crucial aspect of the underlying comprehension process -- the comparison to a norm...
On non-binary temporal relations (1998)
I present a new approach towards temporal reasoning that generalizes from the temporal relations commonly used in Allen's qualitative interval calculus and in quantitative temporal constraint...
Steffen Staab, Steffen Staab, Udo Hahn, Udo Hahn
We specify a model for the conceptual interpretation of relative adjectives (like “big”), which covers a crucial aspect of the underlying comprehension process – the comparison to a norm that...
Dimensional reasoning with qualitative and quantitative distances (1997)
Freiburg Im Breisgau, Steffen Staab, Steffen Staab, Steffen Staab, Udo Hahn, Udo Hahn, ...
We outline a model of dimensional reasoning on time and space scales which integrates quantitative and qualitative knowledge about distances. At the core of this model lie constraints on interval...
Conceptualizing Adjectives (1997)
Steffen Staab, Steffen Staab, Steffen Staab, Udo Hahn, Udo Hahn, Udo Hahn
We specify a model for the conceptual interpretation of relative adjectives (like "big"), which covers a crucial aspect of the underlying comprehension process -- the comparison to a norm...
"tall", "good", "high" - Compared To What? (1997)
Freiburg Im Breisgau, Steffen Staab, Steffen Staab, Steffen Staab, Udo Hahn, Udo Hahn, ...
We specify a model for the conceptual interpretation of positive gradable adjectives. Building on a classification-based terminological reasoning approach we define comparison classes and class norms...
Comparatives In Context (1997)
Freiburg Im Breisgau, Steffen Staab, Steffen Staab, Steffen Staab, Udo Hahn, ...
We propose a model of semantic interpretation of comparatives which is based on a mechanism for semantic copying. Besides common phrasal and clausal forms of comparatives, our model also incorporates...
A Semantic Copying Model For Understanding Comparatives (1997)
Steffen Staab, Steffen Staab, Udo Hahn, Udo Hahn
We propose a model of computational semantic interpretation of comparatives which is based on a mechanism for semantic copying. While the treatment of phrasal and clausal forms of comparatives we...
Steffen Staab, Steffen Staab, Steffen Staab, Udo Hahn, Udo Hahn, Udo Hahn
We outline a model of one-dimensional reasoning on interval relations with quantitative and qualitative distances. At the core of this model lie constraints on interval boundaries, partial ordering...
Comparatives In Context (1997)
Steffen Staab, Steffen Staab, Udo Hahn, Udo Hahn
We propose a model of semantic interpretation of comparatives which is based on a mechanism for semantic copying. Besides common phrasal and clausal forms of comparatives, our model also incorporates...
high’’ – compared to what (1997)
Steffen Staab, Steffen Staab, Steffen Staab, Udo Hahn, Udo Hahn, Udo Hahn
We specify a model for the conceptual interpretation of positive gradable adjectives. Building on a classification-based terminological reasoning approach we define comparison classes and class norms...
Baumann, Peter, Beller, Sieghard, Von Berg, Jens, Czech, Tanja, Dorn, Matthias, Egner, Steffen, ...
Das Freiburger Graduiertenkolleg "Menschliche und Maschinelle Intelligenz" veranstaltete vom 13. 15. Mai 1996 in Zusammenarbeit mit den Graduiertenkollegs aus Hamburg und Saarbrücken einen...
GLR-Parsing of Word Lattices Using a Beam Search Method (1995)
This paper presents an approach that allows the efficient integration of speech recognition and language understanding using Tomita's generalized LR-parsing algorithm. For this purpose the...
GLR Parsing of Word Lattices Using a Beam Search Method. To be presented at Eurospeech'95 (1995)
Steffen Staab, Auere Brucker Str
The process of understanding spoken language requires the efficient processing of ambiguities that arise by the nature of speech. This paper presents an approach that allows the efficient incremental...
GLR Parsing of Word Lattices Using a Beam Search Method (1995)
Steffen Staab, Steffen Staab, Steffen Staab
The process of understanding spoken language requires the efficient processing of ambiguities that arise by the nature of speech. This paper presents an approach that allows the efficient incremental...
We introduce two mechanisms for scaling computations in the framework of temporal reasoning. The first one addresses abstraction at the methodological level. Operators are defined that engender...
Marc Ehrig And, Marc Ehrig, Steffen Staab
Semi-)automatic mapping --- also called (semi-)automatic alignment --- of ontologies is a core task to achieve interoperability when two agents or services use different ontologies. In the existing...
Semi-)automatic mapping --- also called (semi-)automatic alignment --- of ontologies is a core task to achieve interoperability when two agents or services use different ontologies. In the existing...