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This paper describes a new environment, COE, for capturing and formally representing expert knowledge for use in the Semantic Web. COE exploits the ease of use and rapid knowledge construction capabilities of the CmapTools concept mapping system and extends them to support the import and export of formal, machine-interpretable knowledge representations,… (More)
The meaningful integration and comprehension of data from many different sources poses a difficult challenge for the Intelligence Community. Establishing the underlying semantics of that data and developing semantics for new or specialized scenarios is a key part of the solution to that challenge. The emerging Semantic Web technologies address this… (More)
The MVP-CA tool clusters a knowledge base into related rule sets thus allowing the user to comprehend the knowledge base in terms of conceptually meaningful clusters of rules. The tool is eventually meant to aid knowledge engineers and subject matter experts to author, understand and manage the KB for its maximal utilization.
The practical applications of information extraction are currently limited by the need to hand-construct search patterns and lexicons and / or to have available large labelled training sets. To address this issue, we present a semantic bootstrapping technique based on Brin's DIPRE algorithm. The basic algorithm is extended by using clustering to group… (More)