检索词模糊聚类基础上的上下文相关提问扩展算法

Context-Sensitive Query Expansion Algorithm Based on Fuzzy Clustering of Index Terms

本文介绍了利用相关词进行提问扩展的算法。该算法建立在检索词模糊聚类的基础上 ,聚类以检索词在文献中共同出现为标准 ,与提问中检索词相关的群集形成提问的上下文 ,群集中属于上下文的检索词可用于提问的扩展。

In this paper we introduces a method for expanding the query with its associated terms.The method is based on a fuzzy clustering of the index terms,using their common occurrence in documents as clustering criterion.The clusters which are relevant to terms of the query form the query context.The terms of the clusters that belong to the context are used to expand the query.Precision of the result is improve.