A Model Theoretic Semantics for Distributed Ontologies that Accounts for Versioning (2008)
Abstract. We show that the Semantic Web needs a formal semantics for the various kinds of links between ontologies and other documents. We provide a model theoretic semantics that takes into account...
An Initial Investigation into Querying an Untrustworthy and Inconsistent Web (2008)
Abstract. The Semantic Web is bound to be untrustworthy and inconsistent. In this paper, we present an initial approach for obtaining useful information in such an environment. In particular, we...
Systems for Large OWL Datasets ” presented at ISWC2004. (2008)
Yuanbo Guo, Zhengxiang Pan, Jeff Heflin
We describe our method for benchmarking Semantic Web knowledge base systems with respect to use in large OWL applications. We present the Lehigh University Benchmark (LUBM) as an example of how to...
Hawkeye: A Practical Large Scale Demonstration of Semantic Web Integration (2008)
Zhengxiang Pan, Abir Qasem, Sudhan Kanitkar, Fabiana Prabhakar, Jeff Heflin
Abstract. We discuss our DLDB knowledge base system and evaluate its capability in processing a very large set of real-world Semantic Web data. Using DLDB, we have constructed the Hawkeye knowledge...
ADDING SUPPORT FOR DYNAMIC ONTOLOGIES TO EXISTING KNOWLEDGE BASES (2008)
Upmanyu Misra, Zhengxiang Pan, Jeff Heflin
Abstract: An ontology version needs be created when changes are to be made in an ontology while keeping the basic structure of the ontology more or less intact. It has been shown that an Ontology...
Semantic Web. A Portrait of the Semantic Web in Action (2008)
T h e S e m a n t i c W e b
Benchmarking Reasoners for Multi-Ontology Applications (2008)
Ameet N Chitnis, Abir Qasem, Jeff Heflin
Abstract. We describe an approach to create a synthetic workload for large scale extensional query answering experiments. The workload comprises multiple interrelated domain ontologies, data sources...
Document-Centric Query Answering for the Semantic Web (2008)
In this paper, we propose document-centric query answering, a novel form of query answering for the Semantic Web. We discuss how we have built a knowledge base system to support the new queries. In...
An Initial Investigation into Querying an Untrustworthy and Inconsistent Web (2008)
Abstract. The Semantic Web is bound to be untrustworthy and inconsistent. In this paper, we present an initial approach for obtaining useful information in such an environment. In particular, we...
Efficient Selection and Integration of Data Sources for Answering Semantic Web Queries (2007)
Abir Qasem, Dimitre A. Dimitrov, Jeff Heflin
Abstract. We present an approach to identifying the minimal set of potentially relevant Semantic Web data sources for a given query. Our solution involves the adaptation of an efficient information...
DLDB: Extending Relational Databases to Support Semantic Web Queries (2006)
We present DLDB, a knowledge base system that extends a relational database management system with additional capabilities for DAML+OIL inference. We discuss a number of database schemas that can be...
A Model Theoretic Semantics for Ontology Versioning (2006)
We show that the SemanticWeb needs a formal semantics for the various kinds of links between ontologies and other documents. We provide a model theoretic semantics that takes into account ontology...
An Evaluation of Knowledge Base Systems for Large OWL Datasets (2006)
Guo, Yuanbo, Pan, Zhengxiang, Heflin, Jeff
In this paper, we present our work on evaluating knowledge base systems with respect to use in large OWL applications. To this end, we have developed the Lehigh University Benchmark (LUBM). The...
Semantic Web Technologies for Aerospace (2006)
Emerging Semantic Web technology such as the DARPA Agent Markup Language (DAML) will support advanced semantic interoperability in the next generation of aerospace architectures. The basic idea of...
Information integration via an end-toend distributed semantic web system (2006)
Dimitre A. Dimitrov, Jeff Heflin, Abir Qasem, Nanbor Wang
Abstract. A distributed, end-to-end information integration system that is based on the Semantic Web architecture is of considerable interest to both commercial and government organizations. However,...
An Investigation into the Feasibility of the Semantic Web (2006)
Zhengxiang Pan, Abir Qasem, Jeff Heflin
We investigate the challenges that must be addressed for the Semantic Web to become a feasible enterprise. Specifically we focus on the query answering capability of the Semantic Web. We put forward...
A Scalable Approach for Partitioning OWL Knowledge Bases (2006)
Abstract. We describe an approach to partitioning a large OWL ABox with respect to a TBox so that specific kinds of reasoning can be performed separately on each partition and the results trivially...
An evaluation of knowledge base systems for large OWL datasets (2004)
Yuanbo Guo, Zhengxiang Pan, Jeff Heflin
Abstract. In this paper, we present an evaluation of four knowledge base systems (KBS) with respect to use in large OWL applications. To our knowledge, no experiment has been done with the scale of...
Rapid benchmarking for semantic web knowledge base systems (2004)
Sui-yu Wang, Yuanbo Guo, Abir Qasem, Jeff Heflin
Abstract. We present a method for rapid development of benchmarks for Semantic Web knowledge base systems. At the core, we have a synthetic data generation approach for OWL that is scalable and...
A model theoretic semantics for ontology versioning (2004)
Abstract. We show that the Semantic Web needs a formal semantics for the various kinds of links between ontologies and other documents. We provide a model theoretic semantics that takes into account...
Benchmarking DAML+OIL Repositories (2003)
Yuanbo Guo Jeff, Jeff Heflin, Zhengxiang Pan
We present a benchmark that facilitates the evaluation of DAML+OIL repositories in a standard and systematic way. This benchmark is intended to evaluate the performance of DAML+OIL repositories with...
DLDB: Extending Relational Databases to Support Semantic Web Queries (2003)
Abstract: We present DLDB, a knowledge base system that extends a relational database management system with additional capabilities for DAML+OIL inference. We discuss a number of database schemas...
DLDB: Extending Relational Databases to Support Semantic Web Queries (2003)
Abstract: We present DLDB, a knowledge base system that extends a relational database management system with additional capabilities for DAML+OIL inference. We discuss a number of database schemas...
DLDB: Extending Relational Databases to Support Semantic Web Queries (2003)
Abstract: We present DLDB, a knowledge base system that extends a relational database management system with additional capabilities for DAML+OIL inference. We discuss a number of database schemas...
Lcw-based agent planning for the semantic web (2002)
Jeff Heflin, Hector Muñoz-avila
The Semantic Web has the potential to allow software agents to intelligently process and integrate the Web’s wealth of information. These agents must plan how to achieve their goals in light of the...
Lcw-based agent planning for the semantic web (2002)
Jeff Heflin, Hector Muñoz-avila
The Semantic Web has the potential to allow software agents to intelligently process and integrate the Web’s wealth of information. These agents must plan how to achieve their goals in light of the...
A portrait of the semantic web in action (2001)
The World Wide Web’s phenomenal growth rate is making it increasingly difficult to locate, organize, and integrate the available information. To cope with this enormous quantity of data, we need to...
Searching the Web with SHOE (2000)
Although search engine technology has improved in recent years, there are still many types of searches that return unsatisfactory results. This situation can be greatly improved if web pages use a...
Searching the Web with SHOE (2000)
Jeff Heflin And, Jeff Heflin, James Hendler
Although search engine technology has improved in recent years, there are still many types of searches that return unsatisfactory results. This situation can be greatly improved if web pages use a...
Dynamic Ontologies on the Web (2000)
We discuss the problems associated with managing ontologies in distributed environments such as the Web. The Web poses unique problems for the use of ontologies because of the rapid evolution and...
SHOE: A Knowledge Representation Language for Internet Applications (1999)
Heflin, Jeff, Hendler, James, Luke, Sean
It is our contention that the World Wide Web poses challenges to knowledge representation systems that fundamentally change the way we should design KR languages. In this paper, we describe the...
SHOE: A Knowledge Representation Language for Internet Applications (1999)
Heflin, Jeff, Hendler, James, Luke, Sean
It is our contention that the World Wide Web poses challenges to knowledge representation systems that fundamentally change the way we should design KR languages. In this paper, we describe the...
Applying Ontology to the Web: A Case Study (1999)
Jeff Heflin, James Hendler, Sean Luke
This paper describes the use of Simple HTML Ontology Extensions (SHOE) in a real world internet application. SHOE allows authors to add semantic content to web pages and to relate this content to...
SHOE: A Knowledge Representation Language for Internet Applications (1999)
Jeff Heflin, James Hendler, Sean Luke
It is our contention that the World Wide Web poses challenges to knowledge representation systems that fundamentally change the way we should design KR languages. In this paper, we describe the...
Coping with Changing Ontologies in a Distributed Environment (1999)
Jeff Heflin, James Hendler, Sean Luke
We discuss the problems associated with versioning ontologies in distributed environments. This is an important issue because ontologies can be of great use in structuring and querying internet...
SHOE: A Knowledge Representation Language for Internet Applications (1999)
Underlying this evolution has been a dominant thread- the belief that expressivity is a critical property for a KR language. This assumption dates from the early days of KR, and has always been a...
Searching the Web with SHOE (1998)
Although search engine technology has improved in recent years, there are still many types of searches that return unsatisfactory results. This situation can be greatly improved if web pages use a...
Dynamic Ontologies on the Web (1998)
We discuss the problems associated with managing ontologies in distributed environments such as the Web. The Web poses unique problems for the use of ontologies because of the rapid evolution and...
Semantic Interoperability on the Web (1998)
XML will have a profound impact on the way data is exchanged on the Internet. An important feature of this language is the separation of content from presentation, which makes it easier to select...
Reading Between the Lines: Using SHOE to Discover Implicit Knowledge from the Web (1998)
Jeff Heflin, James Hendler, Sean Luke
This paper describes how SHOE, a set of Simple HTML Ontological Extensions, can be used to discover implicit knowledge from the World-Wide Web (WWW). SHOE allows authors to annotate their pages with...