基于SVM过滤的微博新闻话题检测方法

doi:10.3969/j.issn.1000-436x.2013.Z2.015

Journal on Communications ›› 2013, Vol. 34 ›› Issue (Z2): 74-78.doi: 10.3969/j.issn.1000-436x.2013.Z2.015

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Novel topic detection method for microblog based on SVM filtration

Jun-xia CHENG¹,Zhi-tang LI^1,²,Ming-guang ZOU¹,Jin XIAO¹

¹ School of Computer Science and Technology,Huazhong University of Science and Technology,Wuhan 430074,China
² National Engineering Laboratory for Next Gerneration Internet Access System,Wuhan 430074,China

Online:2013-12-25 Published:2017-06-16

Abstract

Jun-xia CHENG,Zhi-tang LI,Ming-guang ZOU,Jin XIAO. Novel topic detection method for microblog based on SVM filtration[J]. Journal on Communications, 2013, 34(Z2): 74-78.

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时间段	微博数	检测数	孤立点		漏检数	检测率
时间段	微博数	检测数	实际量	检测量	漏检数	检测率
10～12	2 756	1 614	1 439	1 431	8	58.57%
12～14	1 727	1 031	795	791	4	59.69%
14～16	2 414	1 401	1 253	1 245	8	56.21%

测试类别			特征类别
测试类别	所有特征	无URL链接	无表情符号	无特殊标点符号	无语句数统计值
准确率	95.57%	90.90%	90.3%	89.26%	71.8%
有效微博召回率	98.92%	92.58%	89.49%	88.17%	31.26%

ID	话题内容	主题词	合井
1	【昆明地铁空载试运行脱轨致1死1伤】	昆明，脱轨，地铁，运行，列车，车厢，司机，试，调查组，载，轻伤，值班，南段	90
2	【我国下月起 400 余品种药物降价，平均降幅15%】	药品，降价，财政局，下月，降幅，品种，自筹，解热，镇痛，平均，限价，剂型	75
3	【热水袋充电变“炸弹”烫伤5岁男童半张脸】	热水袋，充电，烫伤，脸部，男童，炸弹，大面积，床头柜，爆炸，烧伤，脖子，孙子	57
4	【中科院报告：中国2049年全面超越美国实现复兴】	超越，中科院，复兴，时间表，美国，路线图，报告，实现，全面，总量，提出，预计	56
5	【兰考火灾事故6名相关责任人被停职检查】	责任人，民政局，兰考，停职，城关，镇长，党委，火灾，民政，科员，局长，书记	53

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Novel topic detection method for microblog based on SVM filtration

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