Fuzzy Protégé is a semi-automatic collaborative tool for the construction of fuzzy ontology models, built as a Protégé 3.3.1 tab plug-in. Fuzzy Protégé is an extension of the well known ontology editor Protégé for which we have defined new meta-classes to allow the definition of parameterized membership functions. Fuzzy Protégé also gives support to instantiate fuzzy concepts and roles and allo...

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, Protégé-2000, incorporates the Open Knowledge Bas...

This paper presents a solution for a new plug-in named Passerelle for Protégé 2000. Passerelle makes it possible to connect Protégé to Sesame architecture, to store and query RDF(s) data. With Passerelle, Protégé becomes a stronger ontology editor. It gives an ontology developer, the possibility of using RDF query Language (RQL) as it enables much stronger and advanced query possibilities than ...

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 for knowledge-based systems developmen...

The plug-in architecture of Protégé [3] is extremely successful in that it allows developers to custom-tailor Protégé for new purposes and to extend significantly the functionality the Protégé environment. Until now, developers have mainly extended Protégé by adding new tab plug-ins. For example, there are tab extensions that support visualization, validation, and reasoning, as well as domain-s...

This paper gives an overview on the use of Protégé in the Artequakt system, which integrated Protégé with a set of natural language tools to automatically extract knowledge about artists from web documents and instantiate a given ontology. Protégé was also linked to structured templates that generate documents from the knowledge fragments it maintains.