基于语义的文本过滤系统的设计与实现

Design and Implementation of Semantic-based Text Filtering System

介绍了一种新的文本形式化的语义模型——语境框架。语境框架是一个三维的语义描述,它把文本内容抽象成领域(静态范畴)、情境(动态描述)、背景(褒贬、参照等)三个框架。在语境框架的基础上,根据语境相似度的计算,把文本过滤问题转换成语义框架的匹配问题,可以有效地处理语言中的褒贬倾向、同义、多义等现象,实际应用中表明可以提高文本过滤的性能和过滤系统的定制能力。

A Model of semantic-based text formalization,Context F ra mework Model(CFM),is presented in this paper.Context Framework is three-coo rdinate,describes the text as Domain,Situation,Background.Based on the simil arity of Context Framework,the confusion of synonymy ,polysemy ,commendatory and derogatory can be dealt ed with effectively.The filtering task can be trans fered to the similarity computing among semantic terms.As a result,this mecha nism can express the filtering requirements for diverse users and remarkably imp rove the efficiency of text filtering.