Microblog topic evolution computing based on LDA algorithm

Open Physics

Yuanyuan Ding¹  Jian Feng²  Yajiao Wang² 

[1] Beijing Huade Hydraulic Industry Group, Beijing, 100176, China;College of Computer Science & Technology, Xi’an University of Science and Technology, Xi’an, 710054, China;

关键词: lda;    topic evolution;    semantic similarity;    relevance;    co-occurrence;    07.05.kf;    89.20.hh;   

DOI  :  10.1515/phys-2018-0067

来源: DOAJ

【 摘 要 】

Research on topic evolution of Microblog is an effective way to analyze network public opinions. This paper proposes a method for mining changing of Microblog topics with time, and realizes topic evolution through topic extraction and topic relevance calculation. Firstly, latent Dirichlet allocation (LDA) model is used to automatically extract topics from different time slices; secondly, a similarity calculation algorithm is designed to calculate relevance of topic content through normalization of similarities among characteristic words and co-occurrence relations, to get evolutionary relationship among sub-topics of different time slices; thirdly, using probability distribution of blog article-topic to calculate topic intensity in each time slice, and then gets evolutionary relationship of topic intensity over time. Experiments show that the proposed topic evolution analysis model can effectively detect the evolution of topic content and intensity of real blogs.

【 授权许可】

Unknown