Catalyst, a component of DDNI/A’s Analytical Transformation Program, will process unstructured, semistructured, and structured data to produce a knowledge base of entities (people, organizations, places, events, …) with associated attributes and the relationships among them. It will perform functions such as entity extraction, relationship extraction, semantic integration, persistent storage of entities, disambiguation, and related functions (these are defined in the body of the report). The objective of this study is to assess the state-of-the-art and state-of-the-practice in these areas.

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