Conceptual Indexing: Practical Large-Scale AI for Efficient Information Access

William A. Woods, Sun Microsystems Laboratories

Finding information is a problem shared by people and intelligent systems. This paper describes an experiment combining both human and machine aspects in a knowledge-based system to help people find information in text. Unlike many previous attempts, this system demonstrates a substantial improvement in search effectiveness by using linguistic and world knowledge and exploiting sophisticated knowledge representation techniques. It is also an example of practical subsumption technology on a large scale and with domain-independent knowledge. Results from this experiment are relevant to general problems of knowledge-based reasoning with large-scale knowledge bases.

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