Institute of Information Science Academia Sinica
Topic: Network Interference and Cyber Security under Social Media systems
Speaker: Prof. S. Felix Wu (UC Davis)
Date: 2017-04-28 (Fri) 14:00 – 16:00
Location: Auditorium 106 at IIS new Building
Host: Ling-Jyh Chen


Social Media is changing many different aspects of our lives. By participating in online discussions across different time-zones, languages, and cultural backgrounds, people exchange opinions on various topics or contents, shape their stances, and gradually build their own characteristics. And, all such social interactions have been delivered by a networking system over the Internet and service providers at different layers. In this talk, we will focus on the interference between the social and network service layers. We will present a framework for identifying online user characteristics and understanding the formation of user deliberation and bias in online newsgroups, and correlate those with the network level activities.

Under the (Social Interactive Networks: Conversation Entropy Ranking Engine), we have designed a dynamic user like graph model to recognize user deliberation and bias automatically in online newsgroups. By applying this model to large online newsgroups, we study the influence of early discussion context on the formation of user characteristics as well as cyber-security related activities.


Prof. S. Felix Wu has been doing “experimental”system research, i.e., building prototype systems to justify and validate novel architectural concepts. An article titled "Networking: Four ways to reinvent the Internet" published in Nature 463 (February 3rd, 2010, by Katharine

Gammon) provided a brief but very nice cover about his primary thought on a Social-network-based future Internet architecture. During the past ten years, he has been pretending (and hoping) to know a little bit more about social sciences so he can claim that he is working on multidisciplinary research. He strongly believes that thoroughly considering the factor of human relationships is necessary for any IT innovation. Therefore, his primary research objective, before he retires, is to help and contribute to the information technology advancement that would truly help our human society. As an initial step, he recently released the SINCERE (Social Interactive Networking and Conversation Entropy Ranking Engine, sponsored by NSF) search engine under, which is trying to help our Internet society to discover "interesting/unusual" discussions. Felix received his BS from Tunghai University, Taiwan, in 1985, both MS and PhD from Columbia University in 1989 and 1995, all in Computer Science. He has about 150 academic publications, which means that he should probably focus much more on the depth and quality. He is currently Professor of Computer Science and Associate Dean of Academic Personnel and Research, College of Engineering, UC Davis.