OPOSSum- An Online Portal to Collect and Share Semantic Service Descriptions (2009)
Ulrich Küster, Birgitta König-ries, Andreas Krug
Despite of a wealth of theoretical work in the area of semantic web services (SWS), surprisingly little effort has been spent towards the comparative evaluation of the competing approaches [1]. This...
Evaluating Semantic Web Service Matchmaking Effectiveness Based on Graded Relevance (2009)
Ulrich Küster, Birgitta König-ries
Abstract. Semantic web services (SWS) promise to take service oriented computing to a new level by allowing to semi-automate timeconsuming programming tasks. At the core of SWS are solutions to the...
P2P, Ad Hoc and Sensor Networks – All the Different or All the Same? Working Group Summary (2009)
Peter A. Boncz, Angela Bonifati, Joos-hendrik Böse, Stefan Böttcher, Fu Berlin, ...
Summary. Currently, data management technologies are in the process of finding their way into evolving networks, i.e. P2P, ad hoc and wireless sensor networks. We examine the properties, differences...
08421 Working Group: Lineage/Provenance (2009)
Das Sarma, Anish, Deshpande, Amol, Hubauer, Thomas, Ilyas, Ihab F., König-Ries, Birgitta, Renz, Matthias, ...
The following summary tries to capture a collection of state-of-the-art techniques and challenges for future work on lineage management in uncertain and probabilistic databases that we discussed in...
08421 Working Group: Uncertainty and Trust (2009)
Aras, Hidir, Beckstein, Clemens, Buchegger, Sonja, Dittrich, Peter, Hubauer, Thomas, Klan, Friederike, ...
This report summarizes the findings of a working group on "Uncertainty and Trust" which met during Dagstuhl Seminar 08421 "Uncertainty Management in Information Systems". All participants of the...
08421 Executive Summary -- Uncertainty Management in Information Systems (2009)
Koch, Christoph, König-Ries, Birgitta, Markl, Volker, Van Keulen, Maurice
This executive summary provides a brief overview of the topic, the organization, and the outcome of the Dagstuhl Seminar on Uncertainty Management in Information Systems.
08421 Abstracts Collection -- Uncertainty Management in Information Systems (2009)
Koch, Christoph, König-Ries, Birgitta, Markl, Volker, Van Keulen, Maurice
From October 12 to 17, 2008 the Dagstuhl Seminar 08421 '`Uncertainty Management in Information Systems '' was held in Schloss Dagstuhl~--~Leibniz Center for Informatics. The abstracts of the plenary...
Ulrich Küster, Birgitta König-ries
In this paper, we introduce the DIANE Service Description (DSD) and show how it has been used to solve the mediation problem stated in the scenarios of the SWS-Challenge 1. We provide a consolidated...
Games in Teaching About Mobile Information Systems- An Experience Report (2008)
Jutta Mülle, Birgitta König-ries, Igor Vaynerman
Abstract: Given the increasing role of mobile computing and mobile information access, knowledge about these technologies is an important qualification for future computer scientists. Another...
Supporting Dynamics in Service Descriptions- The Key to Automatic Service Usage (2008)
Ulrich Küster, Birgitta König-ries
Abstract. In realistic settings, service descriptions will never be precise reflections of the services really offered. An online seller of notebooks, for instance, will most certainly not describe...
Dumitru Roman, Holger Lausen, Uwe Keller, Jos De Bruijn, Christoph Bussler, John Domingue, ...
This document is also available in a non-normative PDF version. This document presents an ontology called Web Service Modeling Ontology (WSMO) for describing various aspects related to Semantic Web...
Mobile Agents for Locating Documents in Ad-hoc Networks (2008)
Khaled Nagi, Iman Elgh, Birgitta König-ries
Abstract. The wide availability of mobile devices equipped with wireless communication capabilities together with the technical possibility to form adhoc networks paves the way for building highly...
Evaluation of Semantic Service Discovery- A Survey and Directions for Future Research (2008)
Ulrich Küster, Holger Lausen, Birgitta König-ries
Abstract. In recent years a huge amount of effort and money has been invested in the area of semantic service discovery and presented approaches have become more sophisticated and mature....
Abstract. Distributed reputation systems are a self-organizing means of supporting trusting decisions. In general, the robustness of distributed reputation systems to misbehavior is evaluated by the...
Ulrich Küster, Birgitta König-ries
Automated matching of semantic service descriptions is the key to automatic service discovery and binding. But when trying to find a match for a certain request it may often happen, that the request...
Creating, Filling, and Using a Repository of Reusable Learning Objects for Database Courses 1 (2007)
Michael Klein, Khaldoun Ateyeh, Birgitta König-ries, Jutta Mülle
When you take a look at courses on database management systems taught by different instructors at different types of universities for different target audiences, you will notice that
Engineering Incentive Schemes for Ad Hoc Networks 1 A Case Study for the Lanes Overlay (2007)
Birgitta König-ries, Georgios Papadopoulos
Abstract. In ad hoc networks, devices have to cooperate in order to compensate for the absence of infrastructure. Yet, autonomous devices tend to abstain from cooperation in order to save their own...
Engineering Incentive Schemes for Ad Hoc Networks 1 A Case Study for the Lanes Overlay (2007)
Birgitta König-ries, Georgios Papadopoulos
Abstract. In ad hoc networks, devices have to cooperate in order to compensate for the absence of infrastructure. Yet, autonomous devices tend to abstain from cooperation in order to save their own...
Obreiter, Philipp, König-Ries, Birgitta, Papadopoulos, Georgios
In ad hoc networks, devices have to cooperate in order to compensate for the absence of infrastructure. Yet, autonomous devices tend to abstain from cooperation in order to save their own resources....
06431 Working Group Report on Managing and Integrating Data in P2P Databases (2007)
Boncz, Peter A., Bonifati, Angela, Illarramendi, Arantza, Janacik, Peter, König-Ries, Birgitta, Lehner, Wolfgang, ...
In this report, to our best recollection, we provide a summary of the working group ââ¬ËManaging and Integrating Data in P2P Databasesââ¬â¢ of the Dagstuhl Seminar nr. 6431 on...
Boncz, Peter A., Bonifati, Angela, Böse, Joos-Hendrik, Böttcher, Stefan, Chrysanthis, Panos Kypros, Gruenwald, Le, ...
Currently, data management technologies are in the process of finding their way into evolving networks, i.e. P2P, ad hoc and wireless sensor networks. We examine the properties, differences and...
König-Ries, Birgitta, Klein, Michael [Hrsg.]
Der Workshop Mobile Datenbanken heute, morgen und in 20 Jahren ist der nunmehr achte Workshop des GI Arbeitskreises Mobile Datenbanken und Informationssysteme. Der Workshop findet im...
04441 Working Grou - Towards a Handbook for User-Centred Mobile Application Design (2005)
Boll, Susanne, Breunig, Martin, Davies, Nigel, Jensen, Christian S., König-Ries, Birgitta, Malaka, Rainer, ...
Why do we have difficulties designing mobile apps? Is there a "Mobile RUP"?
B.: A new view on normativeness in distributed reputation systems – beyond behavioral beliefs (2005)
Abstract. Autonomous entities in artificial societies are only willing to cooperate with entities they trust. Reputation systems keep track of the entities ’ behavior and, thus, are a widely used...
A classification of issues and approaches in automatic service composition (2005)
Ulrich Küster, Mirco Stern, Birgitta König-ries
Abstract. Resulting from the constantly increasing usage of service oriented computing, the problem of automatic composition of services is rapidly gaining attention. Many solutions have been...
04441 Working Group -- Towards a Handbook for User-Centred Mobile Application Design (2005)
Boll, Susanne, Breunig, Martin, Davies, Nigel, Jensen, Christian S., König-Ries, Birgitta, Malaka, Rainer, ...
Why do we have difficulties designing mobile apps? Is there a "Mobile RUP"?
04441 Working Group -- Business Models (2005)
König-Ries, Birgitta, Lehner, Franz, Malaka, Rainer, Matthes, Florian, Obreiter, Philipp, Pousttchi, Key, ...
This document presents the results from the working group ââ¬ÅBusiness Modelsââ¬Â (WG 1) discussing the seminar topic under market aspects. Main objectives were developing a...
04441 Executive Summary -- Mobile Information Management (2005)
Dunham, Margaret H., König-Ries, Birgitta, Pitoura, Evaggelia, Reiher, Peter, Türker, Can
From October, 25th until 29th
04441 Abstracts Collection -- Mobile Information Management (2005)
Dunham, Margaret H., König-Ries, Birgitta, Pitoura, Evaggelia, Reiher, Peter, Türker, Can
From 24.10.04 to 29.10.04, the Dagstuhl Seminar 04441 ``Mobile Information Management'' was held in the International Conference and Research Center (IBFI), Schloss Dagstuhl. During the seminar,...
Praktikum 'Mobile Informationssysteme'. (2004)
Klein, Michael, König-Ries, Birgitta, Lockemann, Peter, Mülle, Jutta
Coupled signature and specification matching for automatic service binding (2004)
Michael Klein, Birgitta König-ries
Abstract. Matching of semantic service descriptions is the key to automatic service discovery and binding. Existing approaches split the matchmaking process in two step: signature and specification...
B.: Activity-based user modeling in serviceoriented ad-hoc-networks (2004)
Tobias Breyer, Michael Klein, Birgitta König-ries
Abstract. Wireless network research still lacks methods to integratively evaluate the performance that can be expected from application layer protocols. The user behavior is predominantly affecting...
B.: Activity-based user modeling in serviceoriented ad-hoc-networks (2004)
Tobias Breyer, Michael Klein, Birgitta König-ries
Abstract. Wireless network research still lacks methods to integratively evaluate the performance that can be expected from application layer protocols. The user behavior is predominantly affecting...
Engineering Incentive Schemes for Ad Hoc Networks - A Case Study for the Lanes Overlay (2004)
Philipp Obreiter, Birgitta König-ries, Georgios Papadopoulos
In ad hoc networks, devices have to cooperate in order to compensate for the absence of infrastructure. Yet, autonomous devices tend to abstain from cooperation in order to save their own resources....
Integrating preferences into service requests to automate service usage (2004)
Michael Klein, Birgitta König-ries
Today, web services are often used as a technology to integrate functionality of different entities. However, one important potential of service oriented computing is not exploited: the ability to...
Birgitta König-ries, Michael Klein
Abstract. In the context of mobile and wireless devices, an information system is no longer a centralized component storing all the relevant data nor is it a decentralized component governed by a...
Mülle: A Practical Strategy for the Modularization of Courseware. Accepted to (2003)
Khaldoun Ateyeh, Michael Klein, Birgitta König-ries, Jutta Mülle
In order to enable courseware reuse, it is necessary to decompose learning materials into manageable learning objects. Most scientific projects and organizations that are concerned with courseware...
Lanes - A Lightweight Overlay for Service Discovery in Mobile Ad Hoc Networks (2003)
Michael Klein, Birgitta König-ries
The ability to discover services offered in a mobile ad hoc network is the major prerequisite for effective usability of these networks. Unfortunately, existing approaches to service trading are not...
Lanes - A Lightweight Overlay for Service Discovery in Mobile Ad Hoc Networks (2003)
Michael Klein, Birgitta König-ries
The ability to discover services offered in a mobile ad hoc network is the major prerequisite for effective usability of these networks. Unfortunately, existing approaches to service trading are not...
Birgitta König-ries, Michael Klein
In the context of mobile and wireless devices, an information system is no longer a centralized component storing all the relevant data nor is it a decentralized component governed by a common...
Birgitta König-ries, Michael Klein
Abstract. In the context of mobile and wireless devices, an information system is no longer a centralized component storing all the relevant data nor is it a decentralized component governed by a...
Stepwise refinable service descriptions: Adapting DAML-S to staged service trading (2003)
Michael Klein, Birgitta König-ries
Abstract. In order for service-oriented architectures to become successful, powerful mechanisms are needed that allow service requestors to find service offerers that are able to provide the services...
A process and a tool for creating service descriptions based on DAML-S (2003)
Michael Klein, Birgitta König-ries
Abstract. In distributed environments, collaboration is often achieved with the help of services. To enable automatic service trading, semantically expressive, automatically comparable, flexible, and...
Dr. Birgitta König-ries, Michael Klein
Workshop by the GI-Arbeitskreis
B.: Multi-layer clusters in ad-hoc networks - an approach to service discovery (2002)
Michael Klein, Birgitta König-ries
Abstract. One of the core functionalities needed in ad-hoc peer-to-peer networks is service discovery. However, none of the existing solutions for service discovery work well in these dynamic,...
M.: Information services to support e-learning in ad-hoc networks (2002)
Birgitta König-ries, Michael Klein
Abstract. Mobile ad-hoc networks are a growing research topic. Much effort has been put into providing a technical basis for such networks. However, up to now, there has been very little work on how...
An Architecture for Transparent Access to Semantically Heterogeneous Information Sources (1997)
Christine Reck, Birgitta König-Ries
. We propose an agent architecture that provides transparent access to a set of distributed, heterogeneous, and autonomous information sources. Our objectives are twofold: First, we want to support...