Ray W. Fergerson

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today. We need a Semantic Web to express information in a precise, machine-interpretable form, so software agents processing the same set of data share an understanding of what the terms describing the data mean.1 Consequently, we’ve recently seen an explosion in the number of Semantic Web languages developed. Because researchers and developers haven’t yet(More)
We introduce the OWL Plugin, a Semantic Web extension of the Protégé ontology development platform. The OWL Plugin can be used to edit ontologies in the Web Ontology Language (OWL), to access description logic reasoners, and to acquire instances for semantic markup. In many of these features, the OWL Plugin has created and facilitated new practices for(More)
The Protégé project has come a long way since Mark Musen first built the Protégé metatool for knowledge-based systems in 1987. The original tool was a small application, aimed at building knowledge-acquisition tools for a few specialized programs in medical planning. From this initial tool, the Protégé system has evolved into a durable, extensible platform(More)
Knowledge-based systems have become ubiquitous in recent years. The World-Wide Web consortium is developing the Resource Description Framework (RDF)—a system for annotating even Web pages with knowledge elements. Knowledge-base developers need to be able to share and reuse knowledge bases that they build. Therefore, interoperability among different(More)
Biomedical ontologies provide essential domain knowledge to drive data integration, information retrieval, data annotation, natural-language processing and decision support. BioPortal (http://bioportal.bioontology.org) is an open repository of biomedical ontologies that provides access via Web services and Web browsers to ontologies developed in OWL, RDF,(More)
It has been 13 years since the first version of Protégé was run. The original tool was a small application, aimed mainly at building knowledge-acquisition tools for a few very specialized programs (it grew out of the ONCOCIN project and the subsequent attempts to build expert systems for protocol-based therapy planning). The most recent version,(More)
This paper describes the integration of an interactive visualization user interface with a knowledge management tool called Protégé. Protégé is a general-purpose tool that allows domain experts to build knowledge-based systems by creating and modifying reusable ontologies and problem-solving methods, and by instantiating ontologies to construct knowledge(More)
Protégé-2000 is an open-source tool that assists users in the construction of large electronic knowledge bases. It has an intuitive user interface that enables developers to create and edit domain ontologies. Numerous plugins provide alternative visualization mechanisms, enable management of multiple ontologies, allow the use of interference engines and(More)
During the past decade, there has been increasing consensus within the knowledge-based–systems community on appropriate conceptual components for building intelligent computer programs. Intelligent systems are now generally construed in terms of both domain ontologies and abstract problemsolving methods that operate on knowledge bases defined in terms of(More)