Seungjin Choi

Professor of Computer Science

Department of Computer Science
Pohang University of Science and Technology (POSTECH)
San 31 Hyoja-dong, Nam-gu
Pohang 790-784, KOREA
voice: +82-54-279-2259
fax: +82-54-279-2299
email: seungjin@postech.ac.kr

Hello, I am a Professor of Computer Science at POSTECH, Korea. I received B.S. and M.S. in the Department of Electrical Engineering from Seoul National University, KOREA, in 1987 and 1989, respectively. From August 1990 through August 1996, I was with Laboratorty for Image and Signal Analysis (LISA), University of Notre Dame (ND) where I received the Ph.D. degree in the Department of Electrical Engineering in 1996. After lecturing as a Visiting Assistant Professor at University of Notre Dame for 1996 Fall semester, I joined Lab for Artificial Brain Systems (headed by Professor A. Cichocki), Brain Information Processing Group (directed by Professor S. Amari) in RIKEN, JAPAN. While I was working in Brain Information Processing Group, RIKEN, I focused on understanding an information processing principle for brain and I also worked on independent component analysis (ICA) extensively. Whole scientists working in brain science have wanted to know how brain works. That is our ultimate goal. Personally, I would like to devote myself to develop real unsupervised learning algorithms in the sense that they have real intelligence. I would like to call a family of these algorithms as self-evaluation algorithms. (this is tentative terminology because I have not found better word) I used to work on multichannel blind deconvolution and equalization problem which is very fundamental and challenging. Multichannel blind deconvolution and equalization have numerous applications in digital communication and wireless communications as well as in brain science. My academic background grew up in signal processing community and statistics, not in neuroscience. However, ever since I worked on RIKEN, Japan, I started to have a variety of interests in brain science, especially computational neuroscience. My experience of working with Prof. S. Amari and A. Cichocki made me to realize how much important information theory is. Ever since then, my interest has remained in a variety of topics in information theory, mainly information-theorectic learning. As of February, 2001, I joined the Department of Computer Science in POSTECH. Currently I am working on machine learning, especially statistical machine learning which included many exciting things such as probabilistic models, graphical models, kernel machines, Bayesian learning, and so on. I am also working on the applications of machine learning, which include brain computer interface, pattern classfication, medical imaging, computational hearing/vision, bioinformatics, etc. I would like to keep doing some theoretical work to develop real learning algorithms and will do some application work as well. Although whole algorithms can not be named as learning algorithms (they are simply adaptive algorithms, they are not really learning), I am one of researchers who have called them as learning algorithms. Until I come up with self-evaluation algorithms, I will be excused to call them as learning algorithms.