%0 Journal Article %1 protege %A Noy, N.F. %A Fergerson, R.W. %A Musen, M.A. %D 2000 %J Lecture Notes in Computer Science %K model ontology protege %P 69-82 %T The knowledge model of Protégé-2000: Combining interoperability and flexibility %V 1937 %X 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 knowledge-representation systems is essential. The Open Knowledge-Base Connectivity protocol (OKBC) is a common query and construction interface for frame-based systems that facilitates this interoperability. Protégé-2000 is an OKBC-compatible knowledge-base–editing environment developed in our laboratory. Protégé-2000 has an easy-to-use and configurable interface. We describe its OKBCcompatible knowledge model that makes the import and export of knowledge bases from and to other knowledge-base servers easy. We discuss how the requirements of being usable and configurable knowledge-acquisition tool affected our decisions in the knowledge-model design. Protégé-2000 also has a flexible metaclass architecture which provides configurable templates for new classes in the knowledge base. The use of metaclasses makes Protégé-2000 easily extensible and enables its use with other knowledge models. For example, we demonstrate that we can resolve many of the differences between the knowledge models of Protégé-2000 and RDF by defining a new metaclass set. Resolving the differences between the knowledge models in declarative way enables easy adaptation of Protégé-2000 as an editor for other knowledgerepresentation systems.

@article{protege, abstract = {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 knowledge-representation systems is essential. The Open Knowledge-Base Connectivity protocol (OKBC) is a common query and construction interface for frame-based systems that facilitates this interoperability. Protégé-2000 is an OKBC-compatible knowledge-base–editing environment developed in our laboratory. Protégé-2000 has an easy-to-use and configurable interface. We describe its OKBCcompatible knowledge model that makes the import and export of knowledge bases from and to other knowledge-base servers easy. We discuss how the requirements of being usable and configurable knowledge-acquisition tool affected our decisions in the knowledge-model design. Protégé-2000 also has a flexible metaclass architecture which provides configurable templates for new classes in the knowledge base. The use of metaclasses makes Protégé-2000 easily extensible and enables its use with other knowledge models. For example, we demonstrate that we can resolve many of the differences between the knowledge models of Protégé-2000 and RDF by defining a new metaclass set. Resolving the differences between the knowledge models in declarative way enables easy adaptation of Protégé-2000 as an editor for other knowledgerepresentation systems.}, added-at = {2009-02-26T11:15:24.000+0100}, author = {Noy, N.F. and Fergerson, R.W. and Musen, M.A.}, biburl = {https://www.bibsonomy.org/bibtex/2847b04330b213d4ffea900db6a15706a/gromgull}, interhash = {ffb04fc0225505e262adb8158ab38637}, intrahash = {847b04330b213d4ffea900db6a15706a}, journal = {Lecture Notes in Computer Science}, keywords = {model ontology protege}, pages = {69-82}, timestamp = {2009-02-26T11:15:24.000+0100}, title = {The knowledge model of Protégé-2000: Combining interoperability and flexibility}, volume = 1937, year = 2000 }