【摘要】 本文以网络经济论坛为研究对象,提出热点主题挖掘的综合模型,包括:基于迭代聚类的热点主题发现模块,以关注度、相关度、时效性为核心的主题热度评估模块,以及主题的意见挖掘模块。并以某个时间段内天涯论坛中经济论坛的样本数据进行实验研究,从而挖掘出经济论坛热点主题,进而为确定当前的经济热点主题提供依据。实验结果表明,采用该模型热点主题提取的结果能有效反映当前人们所关注的经济问题,意见挖掘结果能在一定程度上反映人们对热点主题的态度,因此,本文提出的热点主题挖掘模型是有效的。更多还原

【Abstract】 This paper aims to establish a suitable hot topics mining model based on economic BBS, which includes threemodules: a discovery module of spot topic based on iterative clustering; a subject heat evaluation module based on the atten-tion rate, relevancy, timeliness; an opinion mining module that calculating the total positive and the negative opinions.Based on the work above, we do an experiment on the Tianya economic BBS. The result shows, the hot topics extracted canreflect the current concerned economic issues; the opinion mining results can reflect the attitudes of people on the hot top-ics to a certain extent. Therefore, the model of hot topics mining is effective.更多还原