Abstract: Compared with the traditional retrieval model, this paper proposes a retrieval model based on domain Ontology combining with the Ontology concepts. The model uses the concept of Ontology in the semantic relations and semantic extension mechanism to map and expand the keyword querying concept. By calculating the document similarity, the model returns search results and shows the better retrieval precision rate and recall rate.

Key words: information retrieval, Ontology, concept tree, intelligent retrieval, document similarity

摘要： 在传统检索模型的基础上，结合本体概念，提出一种基于领域本体的检索模型。该模型利用本体中语义概念关系及语义扩展机制对查询关键词进行概念映射及扩展，通过计算文档相似度返回检索结果，提高检索的查准率和查全率。

关键词: 信息检索, 本体, 概念树, 智能检索, 文档相似度

CLC Number: 

• TP311