信息检索中修饰语作用的研究

Research on the Importance of Modifiers to Document Information Retrieval

在海量信息中检索时，与用户查询相关的信息常常被漏掉，而与查询无关的信息——信息垃圾，却大量地出现在检索结果中。改进文本信息检索系统的质量，提高检索效能，已成为亟待解决的问题。本文针对能够影响检索效力的一个易被忽略的因素——修饰语，研究其在文本信息检索中的作用。为此，构建了修正的向量空间模型（Modified Vector Space Model，MVSM），并以英文文本进行试验，进而说明修饰语的作用。

It happens more often than not that when people retrieve documents among a mass of information, the exact information relevant to the user＇s query can＇t be obtained,on the contrary too much information trash,which is not relative to the user＇s, is cover a large proportion. Therefore, improving the quality and effectiveness of the information retrieval （IR） system has become a desired issue. The objective of this paper is to research into the importance of modifiers, which is a factor often ignored but can influence the effectiveness of IR system, to document information retrieval. According to this, a modified vector space model （MVSM） is built. Experiments using English documents are also done to show the importance of modifiers.