期刊文献+

基于领域本体加权树的语义相似度算法研究 被引量:1

Research on the Semantic Similarity Algorithm Based on the Weighted Tree of Domain Ontology
下载PDF
导出
摘要 本体映射的核心在于语义相似度算法,单一的概念相似度计算方法往往不利于提高相似度的精度。本文针对机械零部件领域本体(MPO)提出一种基于本体加权树的语义相似度算法OWSTS,利用MPO提取领域知识文档标题信息中的核心概念,并结合OWSTS算法来确定文档信息与查询式间的语义关联程度。该方法在GB_MPO智能信息检索系统中得到较好的应用。实验表明,该方法与基于TF*IDF的信息检索方法相比,检索性能有较大提高。 The semantic similarity algorithm is the key to ontology mapping. The past experiences tell us that single concept similarity algorithms are not in favor of improving the precision of retrieving the results. In the paper, according to MPO, we propose a new semantic similarity algorithm based on the weighted tree of the domain ontology. With the help of MPO, we can extract key concepts from the title of document, and then apply OWSTS to evaluating the association degree between documents and retrieving expressions. This approach has been well applied in the intelligent retrieving system, GB_MPO. The results of experiments show that the performance of the OWSTS algorithm is obviously better than that of TF * IDF.
作者 胡坚 赵燕伟
出处 《计算机工程与科学》 CSCD 北大核心 2009年第9期77-79,144,共4页 Computer Engineering & Science
基金 国家自然科学基金资助项目(50175103)
关键词 领域本体 加权树 语义相似度 智能检索 MPO domain ontology weighted tree semantic similarity intelligent retrieval MPO
  • 相关文献

参考文献10

  • 1Wong A K Y, Ray P, P N. Ontology Mapping for the Interoperability Problem in Network Management [J]. IEEE Journal on Selected Areas in Communications, 2005, 23(10): 2058-2068.
  • 2Resnik P. Using Information Content to Evaluate Semantic Similarity in A Taxonomy [C]//Proc of the 14th Int'l Joint Conf on Artificial Intelligence, 1995:448-453.
  • 3Tversky A. Features of Similarity[J]. Psychological Review , 1977,84(4) :327-352.
  • 4Resnik O. Semantic Similarity in a Taxonomy: An Informa- tion-Based Measure and Its Application to Problems of Ambiguity and Natural Language[J]. Journal of Artificial Intelligence Research, 1999(11) :95-130.
  • 5R da R, Milih, Bicknelle, et al. Developmentand Application of a Metric on Semantic Nets[J]. IEEE Trans on System, Man and Cybernetics, 1989,19(1) : 17-30.
  • 6Rordriguez M A. Assessing Semantic Similarity Among Spatial Entity Classes: [Ph D Theis] [D]. University of Maine, 2000.
  • 7赵燕伟,胡坚,张国贤.基于OWL本体建模的概念产品配置[J].中国机械工程,2004,15(19):1725-1728. 被引量:7
  • 8鲁松,李晓黎,白硕,王实.文档中词语权重计算方法的改进[J].中文信息学报,2000,14(6):8-13. 被引量:120
  • 9Dumais S T. Using LSI for Information Filtering: TREC-3 Experiments[C]//Proe of the 3rd Text Retrieval TREC-3, 1995:219-230.
  • 10许忠锡.关于查全率与查准率相互关系问题的新认识[J].情报杂志,2004,23(3):57-60. 被引量:9

二级参考文献5

共引文献133

同被引文献6

引证文献1

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部