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High-Speed Similitude Retrieval for a Viewpoint-Based Similarity Discrimination System

Takashi YUKAWA, Kaname KASAHARA, Kazumitsu MATSUZAWA

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Summary :

This paper proposes high-speed similitude retrieval schemes for a viewpoint-based similarity discrimination system (VB-SDS) and presents analytical and experimental performance evaluations. The VB-SDS, which contains a huge set of semantic definitions of commonly used words and computes semantic similarity between any two words under a certain viewpoint, promises to be a very important module in analogical and case-based reasoning systems that provide solutions under uncertainty. By computing and comparing similarities for all words contained in the system, the most similar word for a given word can be retrieved under a given viewpoint. However, the time this consumes makes the VB-SDS unsuitable for inference systems. The proposed schemes reduce search space based on the upper bound of a similarity calculation function to increase retrieval speed. An analytical evaluation shows the schemes can achieve a thousand-fold speedup and confirmed through experimental results for a VB-SDS containing about 40,000 words.

Publication
IEICE TRANSACTIONS on Information Vol.E80-D No.12 pp.1215-1220
Publication Date
1997/12/25
Publicized
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Type of Manuscript
Category
Artificial Intelligence and Cognitive Science

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