Plenary Lecture
A Probabilistic Approach to Low-power Context-Aware Systems for Smartphone
Professor Sung-Bae Cho
Department of Computer Science
Yonsei University
Seoul, Korea
E-mail: sbcho@cs.yonsei.ac.kr
Abstract: The recent proliferation of smartphones leads to developing a large variety of applications and investigating on the use of various sensors through context-awareness. However, the battery capacity of smartphone is still behind the development of service application, and it is a critical issue how to reduce the battery consumption for the context-awareness in smartphone.In this talk, Ipresent a low-power context-aware system using a probabilistic approach. Bayesian network can recognize contexts in uncertain situations or from incomplete data, but the probabilistic model generally has high complexity. It causes the high consumption for context-awareness in smartphone. I propose a tree-structure learning method to reduce the time complexity. Experiments with the real data collected from several users show the usefulness of the method, leading to the accuracy of 94.13% with a half of energy consumption compared with the conventional method.
Brief Biography of the Speaker: Sung-Bae Cho received the Ph.D. degree in computer science from KAIST (Korea Advanced Institute of Science and Technology), Taejeon, Korea, in 1993. He was an Invited Researcher of Human Information Processing Research Laboratories at Advanced Telecommunications Research(ATR) Institute, Kyoto, Japan from 1993 to 1995, and a Visiting Scholar at University of New South Wales, Canberra, Australia in 1998. He was also a Visiting Professor at University of British Columbia, Vancouver, Canada from 2005 to 2006, and at King Mongkut’s University of Technology Thonburi, Bangkok, Thailand in 2013. Since 1995, he has been a Professor in the Department of Computer Science, Yonsei University, Seoul, Korea.
His research interests include hybrid intelligent systems, soft computing, evolutionary computation, neural networks, pattern recognition, intelligent man-machine interfaces, and games.He has published over 230 journal papers, and over 680 conference papers.
Dr. Cho has been serving as an associate editor for several journals including IEEE Transactions on CI and AI on Games (2009-present) and IEEE Transactions on Fuzzy Systems (2013-present). He was also the chair of Games Technical Committee, IEEE CIS (2009-2010), and Student Games-based Competition Subcommittee, IEEE CIS (2011-2012). He is a member of Board of Government (BoG) of Asia Pacific Neural Networks Assembly (APNNA) (2011-present), and a member of three technical committees in IEEE CIS such as Emergent Technologies, Computational Finance and Economics, and Games.
Dr. Cho has been awarded several best paper prizes from IEEE Korea Section (1990), Korea Information Science Society (1993, 2005), International Conference on Soft Computing (1996, 1998), World Automation Congress (1998), International Conference on Information Networking (2001), and International Conference on Hybrid AI Systems (2011). He was also the recipient of the Richard E. Merwin prize from IEEE Computer Society in 1993.