基于百度热搜新闻词的社会风险事件5W提取研究

许诺, 唐锡晋

A study on 5W extraction for societal risk events based on hot news search words

XU Nuo, TANG Xijin

系统工程理论与实践 . 2020, (2): 334 -342 . DOI: 10.12011/1000-6788-2018-0386-09