语义相似度的计算方法研究论文.doc

- 249 - 语义相似度的计算方法研究信息与计算科学余牛指导教师:冉延平摘要语义相似度计算在信息检索、信息抽取、文本分类、词义排歧、基于实例的机器翻译等很多领域中都有广泛的应用. 特别是近几十年来随着 技术的高速发展,,总结了语义相似度计算的两类策略, 其中重点介绍了一种基于树状结构中语义词典 Howne t的语义相似度计算方法,最后对两类主要策略进行了简单的比较. 关键词语义相似度;语义距离;知网;语料库 The Reseach puting Methods about Semantic Similarity YU Niu ( Department of Mathematics and Statistics ,Tianshui Normal University ,74100 0) Abstract S emantic similarity is broadly used in many applications such as information retrieval, information extraction, text classification, word sense disambiguation, example-based machine translation and soon. Especially with the rapid development of technology in recent decades, Calculation of semantic similarity has always been an important part of natural language processing and information retrieval research . This paper introduce s several main methods of calculating semantic similarity , then two strategies of semantic similarity measurement are summarized, and we focuse on the based on the stucture of tree and use them to calculate the semantic similarity ,and finally the two strategies are pared . Key words S emantic similarity ,S emantic distance , , C orpus - 250 - 1 ,在实际应用中,有时需要把这种复杂的关系用一种简单的数量来度量,: 一类是通过语义词典, 把有关词语的概念组织在一个树形的结构中来计算; 另一类主要是通过词语上下文的信息(本文只介绍了主要的理论方法) ,