anempiricalfeasibilitystudyofsocietalriskclassificationtowardbbsposts

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	anempiricalfeasibilitystudyofsocietalriskclassificationtowardbbsposts
	Chen Jindong 1; Zhou Xiaoji 2; Tang Xijin3
	2018-01-01
发表期刊	journalofsystemsscienceandsystemsengineering
ISSN	1004-3756
卷号	027 期号:006 页码:709
摘要	Societal risk classification is the fundamental issue for online societal risk monitoring. To show the challenge and feasibility of societal risk classification toward BBS posts, an empirical analysis is implemented in this paper. Through effectiveness analysis, Support Vector Machine based on Bag-Of-Words （BOW-SVM） is adopted for challenge validation, and the distributed document embeddings of BBS posts generated by Paragraph Vector are applied to feasibility study. Based on BOW-SVM, cross-validations of BBS posts labeled by different groups and annotators are conducted. The big fluctuation of cross-validation results indicates the differences of individual risk perceptions, which brings more challenges to societal risk classification. Furthermore, based on the distributed document embeddings of BBS posts, the pairwise similarities of more than 300 thousands BBS posts from different societal risk categories are compared. The higher similarities of BBS posts in the same societal risk category reveal that BBS posts in the same societal risk category share more features than BBS posts in different categories, which manifests the feasibility of societal risk classification of BBS posts, and also reflects the possibility to improve the performance of societal risk monitoring.
语种	英语
文献类型	期刊论文
条目标识符	http://ir.amss.ac.cn/handle/2S8OKBNM/44077
专题	系统科学研究所
作者单位	1.School of Economics and Management, Beijing Information Science &Technology University 2.China Academy of Aerospace Systems Science and Engineering 3.中国科学院数学与系统科学研究院
推荐引用方式 GB/T 7714	Chen Jindong,Zhou Xiaoji,Tang Xijin. anempiricalfeasibilitystudyofsocietalriskclassificationtowardbbsposts[J]. journalofsystemsscienceandsystemsengineering,2018,027(006):709.
APA	Chen Jindong,Zhou Xiaoji,&Tang Xijin.(2018).anempiricalfeasibilitystudyofsocietalriskclassificationtowardbbsposts.journalofsystemsscienceandsystemsengineering,027(006),709.
MLA	Chen Jindong,et al."anempiricalfeasibilitystudyofsocietalriskclassificationtowardbbsposts".journalofsystemsscienceandsystemsengineering 027.006(2018):709.