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Issue No.05 - May (2014 vol.26)
pp: 1
Shulong Tan , Zhejiang Key Laboratory of Service Robot, College of Computer Science, Zhejiang University, Hangzhou, China
Yang Li , Department of Computer Science, University of California, Santa Barbara, CA, USA
Huan Sun , Department of Computer Science, University of California, Santa Barbara, CA, USA
Ziyu Guan , College of Information and Technology, Northwest University of China, Xi'an, China
Xifeng Yan , Department of Computer Science, University of California, Santa Barbara, CA, USA
Jiajun Bu , Zhejiang Key Laboratory of Service Robot, College of Computer Science, Zhejiang University, Hangzhou, China
Chun Chen , Zhejiang Key Laboratory of Service Robot, College of Computer Science, Zhejiang University, Hangzhou, China
Xiaofei He , State Key Laboratory of CAD&CG, College of Computer Science, Zhejiang University, Hangzhou, China
ABSTRACT
Millions of users share their opinions on Twitter, making it a valuable platform for tracking and analyzing public sentiment. Such tracking and analysis can provide critical information for decision making in various domains. Therefore it has attracted attention in both academia and industry. Previous research mainly focused on modeling and tracking public sentiment. In this work, we move one step further to interpret sentiment variations. We observed that emerging topics (named foreground topics) within the sentiment variation periods are highly related to the genuine reasons behind the variations. Based on this observation, we propose a Latent Dirichlet Allocation (LDA) based model, Foreground and Background LDA (FB-LDA), to distill foreground topics and filter out longstanding background topics. These foreground topics can give potential interpretations of the sentiment variations. To further enhance the readability of the mined reasons, we select the most representative tweets for foreground topics and develop another generative model called Reason Candidate and Background LDA (RCB-LDA) to rank them with respect to their “popularity” within the variation period. Experimental results show that our methods can effectively find foreground topics and rank reason candidates. The proposed models can also be applied to other tasks such as finding topic differences between two sets of documents.
INDEX TERMS
Twitter, Educational institutions, Resource management, Analytical models, Tracking, Decision making, Indexes,Web mining, Text mining
CITATION
Shulong Tan, Yang Li, Huan Sun, Ziyu Guan, Xifeng Yan, Jiajun Bu, Chun Chen, Xiaofei He, "Interpreting the Public Sentiment Variations on Twitter", IEEE Transactions on Knowledge & Data Engineering, vol.26, no. 5, pp. 1, May 2014, doi:10.1109/TKDE.2013.116
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