Figure 1From: Discovering opinion leaders for medical topics using news articlesOverall architecture. We first retrieved the articles related to obesity from the Internet using web-crawlers. The Person, Organization and Location named entities were extracted from the collected articles. Among the person names, only medical experts were retained. The semi-automatic normalization step addressed polysemy as well as synonymy. In the social network analysis step, we analyzed the network presence of the subject experts.Back to article page