网络健康社区信息需求特征测度--基于时间和主题视角的实证分析

摘要

以在线问答社区中癌症信息为例，对其信息需求从时间和主题两个角度进行综合测度。对不同时间的数据进行分组，采用L DA主题挖掘法来确定相关编码规则，探求在线问答社区中用户信息需求特征，发现用户对癌症信息的需求主要集中在若干个主题，并且对各主题的关注度随时间呈现出一定的变化趋势。进一步探究在线问答社区健康信息服务存在的问题，为促使各网络健康社区信息服务水平的提高提供参考和指导。%Taking cancer as an example, this paper measures the features of information demand in online Q&A platform from the perspectives of time and theme. It gets the features of information demand by the methods of dividing the data into different groups and coding based on LDA.The results show that the need for cancer information is mainly focused on some topics and changing over time.This paper also analyses the problems of online Q&A platform. Al these finds are benefit to improve online health information service.