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Detection and Analysis of the Topic Based on the Social Q & A Website:A Case Study of“the Elderly”on Zhihu Website
Received date: 2016-01-04
Revised date: 2016-01-28
Online published: 2016-03-05
[Purpose/significance] This paper aims at the limitations of current methods and proposing a topic detection and analysis method for the social Q & A website, which provides a reference for this website in topic detection and analysis.[Method/process] This method is based on the improved Chinese word segmentation techniques, using the Linear Weighted to determine the weight of words, combined with keyword extraction method for determining topic keywords to extract the topic focus and measure the distributions. According to the proposed method, based on data from Zhihu, we carry out the network topic detection and analysis of the topic "the elderly" from three angles:the focus of topic, topic distribution and hot subtopics.[Result/conclusion] This study has shown that this method is scientific and practical. It extends the analytical data source of social problems and provides a basis of decision-makingfor the "Actively Deal with the Population Ageing" activity.
Key words： the elderly; Zhihu website; topics; Chinese character segmentation; measurement
Huang Lucheng , Jiang Linshan , Miao Hong , Wu Feifei . Detection and Analysis of the Topic Based on the Social Q & A Website:A Case Study of“the Elderly”on Zhihu Website[J]. Library and Information Service, 2016 , 60(5) : 93 -100 . DOI: 10.13266/j.issn.0252-3116.2016.05.014
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