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网络作为反映社会舆论的主要载体之一,其引发的舆情问题愈发突出.网络论坛(BBS)是网络舆情的重要数据来源.如何从BBS贴文中捕捉各地域的焦点问题、考察各话题热度的地理分布,对当前省一级的社会管理工作和决策有一定指导作用.文章选取民生话题为主的天涯论坛版块——“天涯杂谈”帖子为舆情来源,采用主题模型的基础模型LDA对包含空间地理信息的帖子建模,提出抽取热门话题的定量方法,从而在众多网民意见中提炼出舆情的地理分布信息,挖掘地域差异对话题的影响.
As one of the main carriers of social public opinion, the network has become more and more prominent.Web forums (BBSs) are an important data source for online public opinions.How to capture the focal points of different regions from BBS posts, Geographical distribution of the current provincial level social management and decision-making have a guiding role.This article selects the people’s livelihood topic-based Forum Forum - “Tianya Tan Tan ” posts for the source of public opinion, the use of the thematic model based on LDA model This paper proposes a quantitative method for extracting popular topics from the modeling of posts that contain spatial and geographic information, so as to extract the geographical distribution of public opinion from the opinions of many netizens and excavate the influence of geographical differences on the topic of conversation.