计算机工程与应用
計算機工程與應用
계산궤공정여응용
COMPUTER ENGINEERING AND APPLICATIONS
2015年
1期
151-155,217
,共6页
本体%查询扩展%用户日志%语义相似度%共现度
本體%查詢擴展%用戶日誌%語義相似度%共現度
본체%사순확전%용호일지%어의상사도%공현도
ontology%query expansion%user log%semantic similarity%co-occurrence degree
为了解决信息检索中存在的用词歧义性问题，提出一种基于本体和用户日志的查询扩展方法。利用领域本体从语义层面扩展用户查询形成初始扩展概念集，结合用户查询日志利用共现度分析对初始扩展概念集进行二次筛选。实验结果表明，与传统的基于局部共现的扩展方法和基于本体的扩展方法相比较，该方法在保障良好鲁棒性的同时，有效地提高了检索准确率。
為瞭解決信息檢索中存在的用詞歧義性問題，提齣一種基于本體和用戶日誌的查詢擴展方法。利用領域本體從語義層麵擴展用戶查詢形成初始擴展概唸集，結閤用戶查詢日誌利用共現度分析對初始擴展概唸集進行二次篩選。實驗結果錶明，與傳統的基于跼部共現的擴展方法和基于本體的擴展方法相比較，該方法在保障良好魯棒性的同時，有效地提高瞭檢索準確率。
위료해결신식검색중존재적용사기의성문제，제출일충기우본체화용호일지적사순확전방법。이용영역본체종어의층면확전용호사순형성초시확전개념집，결합용호사순일지이용공현도분석대초시확전개념집진행이차사선。실험결과표명，여전통적기우국부공현적확전방법화기우본체적확전방법상비교，해방법재보장량호로봉성적동시，유효지제고료검색준학솔。
In order to solve the word ambiguity problem in information retrieval, a new query expansion method based on ontology and user log is proposed. This paper expands user queries using domain ontology from the semantic level to the formation of the initial expanded concept of set, combined with user query logs set for secondary screening of the initial set by use of co-occurrence analysis. The experimental results show that, compared to the traditional expansion method based on the local co-occurrence and ontology-based extension method, this method not only ensures good robustness, but also effectively improves the retrieval accuracy.
