【摘要】 在分析突发事件新闻文本特点的基础上,提出了一种基于加权信息论的主题抽取方法,与传统的方法相比,该方法既考虑了主题词在文本中所含统计信息,又考虑了突发事件新闻文本中主题词出现的位置特征。实验结果表明,采用该方法对突发事件新闻文本进行主题抽取具有较好的性能。更多还原

【Abstract】 An effective method of theme collecting was proposed based on weighted information theory.Comparing to the traditional methods,the statistic information of the theme words in the text was considered,and the position characteristics of the theme words in the text of accident news were taken onto account.The experiment results show that this method performs well in terms of theme collecting from the text of accident news.更多还原