〔关键词〕本体 概念检索 矢量检索模型
Research on Vector Retrieval Model Based on Ontology Concept
Department of Information Management, Sun Yat-sen University, Guangzhou510275
Lingnan College,Sun Yat-sen University, Guangzhou510275
〔Abstract〕For obtaining a document's feature value of vector space model, this paper pust forward an approach for evaluating document's feature value, which is not based on term space but concept space. This methodis supported by field ontology, and the words of document are firstly mapped to the ontology concept space according to the relationships of each other. Then, unlike normal statistical methods, the weight of term is carried out in terms of thematic conceptual vector retrieval model.Since document's feature vector is constructed in the light of semantic content of Doc, the experiment results indicate that the performance of concept VSM is better than normal VSM.
〔Keywords〕ontologyconceptual retrievalvector retrieval model......