社会网络环境下健康舆情关键词幂律特性及信息服务干预研究

摘要

利用百度推广关键词查询功能获取“H7 N9”“非典”“三鹿奶粉”和“雾霾”4起健康舆情相关关键词，对关键词词频进行幂律特性揭示，发现健康舆情关键词符合幂律分布，幂指数介于0.7~1.7。同时，对“H7N9”“埃博拉”“三鹿奶粉”“雾霾”4起健康舆情高频关键词进行文本分析，发现不同种类健康舆情公众诉求有差异，相同类型健康舆情公众诉求具有某种一致性。最后，据此构建了社会网络环境下基于健康信息资源聚合的健康舆情信息服务干预平台框架。%we obtain 4 realted keywords of public health sentiment through"Baidu Promotion" such as"H7N9","SARS","Sanlu milk powder" and "haze". we analyzed power-law characteristics of these public health sentiment. The research results indicate that public health sentiment of search keywords follows the power-law distribution. There is between 0. 7 and 1. 7 of power index. At the same time, we analyzed the"H7N9" "Ebola" "Sanlu milk powder" "haze" 4 public health sentiment of high-frequency keywords for text. We find that different kinds of public has difference demands. The same kinds of opinion public demands have some consistencies. Finally, we construct the framework of Intervention based on information resources polymerization under social network environment.