R.I.P. Sam Roweis

http://www.huffingtonpost.com/2010/01/14/sam-roweis-nyu-professor-_n_421500.html

What a tragic loss to us all in machine learning including manifold learning.

Rest In Peace... Dr. Roweis....

history on manifold

history is on a manifold of space and time or we can say history is a manifold.
that's one of the reasons why we cannot understand the meaning of current
issues clearly. in that sense, the current time is on the edge of the manifold.
that's the reason why we have to look at the "past" to estimate (understand)
the meaning of "present."

still we cannot understand "present" perfectly until long time later when we can
see the issues on the manifold. then we will get to know the meanings more clearly.
unless we lose the facts, just it takes time .

- H. Choi

being on a manifold.

Descartes said, 'I think, therefore I am.'

How can we reach to 'therefore I am' from 'I think'. 

To present data points, we need data space. Likewise, in order to reach the
conclusion 'therefore I am' we need to find the space for the existence.
Moreover, the 'being' should have any relationship with the space as in set theory. 

Thinking is not enough to be 'being' without any relationship with space
(or at least with other data points which makes the relationship with space.)

A data point is in a data space and the manifold gives more meaning to it. 

Descartes said, 'I think, therefore I am,' but God said, 'I am who I am.'

Dec. 03, 2006

- H. Choi

"Thank you" mail.

...

Kernel isomap is a very powerful technique to visualize these nonlinear relations among variables. Thank you for letting us use your MatLab code all these years.

...

- Karl

I'm so glad and honored that somebody is enjoying my work...

Thank God.

- H. Choi

p.s.) All the codes as well as the papers are available at my web page http://people.cs.tamu.edu/hchoi/

Paper accepted :)

Thank God!
I got a paper accepted to SSPR 2008.
Thank you all.

Heeyoul Choi, Brandon Paulson and Tracy Hammond,
"Gesture Recognition based on Manifold Learning,"
LNCS, International Workshop on Structural and Syntactic Pattern Recognition (SSPR 2008),
Orlando,FL 2008 (Accepted)

- H. Choi

Chicago Travel, AAAI 08

I am going to Chicago for a week from this Saturday. AAAI 08.
I have two papers to be published... (both will be available on my homepage
right after the conference)


Heeyoul Choi, Seungjin Choi and Yoonsuck Choe,
"Manifold Integration with Markov Random Walks,"
 in Proc. 23rd Association for the Advanced of Artificial Intelligence (AAAI-08),
Chicago, Illinois, July 13-17, 2008.


Heeyoul Choi and Tracy Hammond,
"Sketch Recognition based on Manifold Learning,"
in Proc. 23rd Association for the Advanced of Artificial Intelligence (AAAI-08),
Chicago, Illinois, July 13-17, 2008.

Both are about manifold learning, though the first one is about integration
which is kind of a new concept and the second one is an application of
kernel Isomap to sketch data set.

Thank you,
- H. Choi

paper accepted :)

Thank God... I got a paper accepted to ICPR 08.

Heeyoul Choi, Ricardo Gutierrez-Osuna, Seungjin Choi and Yoonsuck Choe,
"Kernel Oriented Discriminant Analysis for Speaker-Independent Phoneme Spaces,"
in Proc. 19th International Conference on Pattern Recognition (ICPR-08),
Tampa, Florida, Dec. 8-11, 2008. (Accepted)

Thank you all,
- H. Choi

Robust Kernel Isomap

Thank God...
Thank Dr. Seungjin Choi...

One of my papers below is ranked first in the hottest articles of Pattern Recognition
journal (Oct - Dec. 2007) by sciencedirect.com.

Heeyoul Choi and Seungjin Choi, 
"Robust Kernel Isomap," 
Pattern Recognition, vol. 40, no. 3, pp. 853-862, 2007.

Check this out.
http://top25.sciencedirect.com/index.php?journal_id=00313203

Thank you all...

- H. Choi