Progress in the Development of National Knowledge Infrastructure

This paper presents the recent process in a long-term research project,called National Knowledge Infrastructure (or NKI). Initiated in the early2000, the project aims to develop a multi-domain shareable knowledgebase for knowledge-intensive applications. To develop NKI, we have useddomain-specific ontologies as a solid basis, and have built more than600 ontologies. Using these ontologies and our knowledge acquisitionmethods, we have extracted about 1.1 millions of domain assertions. Forusers to access our NKI knowledge, we have developed a uniformmulti-modal human-knowledge interface. We have also implemented aknowledge application programming interface for various applications toshare the NKI knowledge.