Systematization of domain-specific knowledge with multiple ontologies

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In this research, we investigated the following three issues.(1) Ontology on the Internet :There are enormous but fragmented knowledge in the Internet. People can organize such knowledge with their background knowledge, and at the same time they also acquire knowledge from the Internet. We developed methods to support the above processes.(1-a) Information Gathering from the Internet with ontology (1-b) Ontology acquisition from the Internet.(2) Integration of ontologiesWhile it is a natural way to assume muptpile ontologies, it is difficult problem to integrate different ontologies. We developed a method to integrate ontologies by statistical methods.(3) Distributed ontology development environmentWe proposed a distributed ontology development environment to support ontology building on communities. In this environment, a user can build her ontology by referring relations among concepts in her document set. Furthermore users can exchange concepts to each other by mobile agents.