Leo Obrst    (IR1)

Dr. Leo Obrst is a principal artificial intelligence scientist in the Information Discovery and Understanding department at MITRE’s (www.mitre.org) Command and Control Center, where he leads the Information Semantics Group (semantics, ontological engineering, knowledge representation and management), and has been involved in projects on Semantic Web rule/ontology interaction, context-based semantic interoperability, ontology-based knowledge management, conceptual search and information retrieval, metadata and taxonomy/thesaurus construction for community knowledge sharing, intelligent agent technology, semantic support for natural language processing, and ontology-based modeling of complex decision-making. He is also currently involved in many US federal government efforts to establish Communities of Interest (COI) vocabularies/models for information sharing, including the development of universal and common core vocabularies/models which span those COIs.    (14OC)

In 1999-2001, he was director of ontological engineering at VerticalNet.com, a department he formed to create ontologies in the product and service space to support Business-to-Business e-commerce. Leo's PhD is in theoretical linguistics with a concentration in formal semantics from the University of Texas-Austin. He has worked over 24 years in computational linguistics, knowledge representation, and in the past 14 years in ontological engineering and more recently in Semantic Web technologies. Leo has been employed by Boeing, Software Development Group (a partner), Intelligent Business Systems, the Microelectronics Computer Corporation (MCC), Texas Instruments, SoftCraft, and Ohio Edison.    (14OD)

Leo is a member of the Executive Committee of the National Center for Ontological Research (NCOR, http://ncor.us/), and the chair of the NCOR Technical Committee. He was a member of the W3C Web Ontology Working Group (http://www.w3.org/2001/sw/WebOnt/) that developed the Web Ontology Language OWL, 2002-2004. He was a member of the IEEE Standard Upper Ontology working group (http://suo.ieee.org/), is a member of the Ontolog Forum (http://ontolog.cim3.net/wiki), which he co-founded in 2002 and which focuses on the promotion of ontological engineering and semantic technologies, and the W3C Rule Interoperability Framework (RIF) working group. He is a member of AAAI, ACL, LSA, and ACM. His research interests include semantic interoperability/integration, automated reasoning, formalization of context for ontology mapping and merging, and formal upper ontologies, Semantic Web rules, hybrid logic, answer set programming, and the application of formal ontology and formal semantics to ontological engineering. He is co-author (with Mike Daconta and Kevin Smith) of the recent book The Semantic Web: The Future of XML, Web Services, and Knowledge Management. John Wiley, Inc., June, 2003, and has published many book chapters, conference and workshop papers.    (14OE)

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Some recent or forthcoming publications:    (IR7)

See also:    (IR3)