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Detecting Suicidal Ideation in Chinese Microblogs with Psychological Lexicons
Xiaolei Huang1,2; Lei Zhang1; Tianli Liu3; David Chiu4; Xin Li2; Tingshao Zhu1
2014
发表期刊Computer Science
期号不详页码:1-7
摘要

Suicide is among the leading causes of death in China, however, technical approaches toward preventing suicide are challenging and remain under development. Recently, several suicidal cases were preceded by users who posted microblogs with suicidal ideation to Sina Weibo, a Chinese social media network akin to Twitter. Up to now, we have identified 53 known suicidal cases who posted suicide notes on Weibo prior to their deaths. It would therefore be desirable to detect suicidal ideations from microblogs in real-time, and immediately alert appropriate support groups, which may lead to successful prevention. In this paper, we propose a real-time suicidal ideation detection system deployed over Weibo, using machine learning and known psychological techniques. We explore linguistic features using a psychological lexicon dictionary, and train an effective suicidal Weibo post detection model. 6714 tagged posts and several classifiers are used to verify the model. By combining both machine learning and psychological knowledge, SVM classifier has the best performance of different classifiers, yielding an Fmeasure of 68:3%, a Precision of 78:9%, and a Recall of 60:3%.

收录类别其他
语种英语
文献类型期刊论文
条目标识符http://ir.psych.ac.cn/handle/311026/25616
专题健康与遗传心理学研究室
通讯作者Xin Li; Tingshao Zhu
作者单位1.Institute of Psychology, Chinese Academy of Sciences, China
2.China Networking Information Center, Chinese Academy of Sciences, China
3.Institute of Population Research, Peking University, China
4.Department of Mathematics and Computer Science, University of Puget Sound, USA
推荐引用方式
GB/T 7714
Xiaolei Huang,Lei Zhang,Tianli Liu,et al. Detecting Suicidal Ideation in Chinese Microblogs with Psychological Lexicons[J]. Computer Science,2014(不详):1-7.
APA Xiaolei Huang,Lei Zhang,Tianli Liu,David Chiu,Xin Li,&Tingshao Zhu.(2014).Detecting Suicidal Ideation in Chinese Microblogs with Psychological Lexicons.Computer Science(不详),1-7.
MLA Xiaolei Huang,et al."Detecting Suicidal Ideation in Chinese Microblogs with Psychological Lexicons".Computer Science .不详(2014):1-7.
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