Professor of Computer Science
Department of Computer Science and Engineering,
Pohang University of Science and Technology (POSTECH),
77 Cheongam-ro, Nam-gu,
Pohang 37673, KOREA,
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
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.