Welcome to Chih-Jen Lin's Home Page

Research

Machine Learning:
Support vector machines (SVM) for pattern recognition (with applications on data mining and bioinformatics)
Operations Research:
Large-scale Nonlinear Optimization
We always welcome new students to join our lab.

LIBSVM : a simple and easy-to-use support vector machines tool for classification (C-SVC, nu-SVC), regression (epsilon-SVR, nu-SVR), and distribution estimation.
It includes a GUI for both classification and regression. Version 1.0 released April 2000. Current Version: 2.89, April 2009.
LIBLINEAR: a library for large linear classification. It is very suitable for document classification. Version 1.0 released April 2007. Current Version: 1.33, September 2008.
BSVM : a simple decomposition method for support vector machines for large classification.
It has faster convergence in difficult cases. Version 1.0 released January 2000. Current Version: 2.06, August 2006.
NMF : a simple and easy-to-use MATLAB code for Nonnegative Matrix Factorization.
Version 1.0 released October 2005. Current Version: 1.01, December 2005.
TRON: Trust region Newton Method for large bound-constrained optimization, released June 1999. We also provide an AMPL interface in NEOS.
Other miscellaneous software

Professor, Department of Computer Science and and Information Engineering, National Taiwan University. August 2006-- (Assistant Professor, August 1998--2002, Associate Professor, 2002--2006)
Adjunct Professor, Graduate Institute of Networking and Multimedia , National Taiwan University. August 2006--
Research Associate, Mathematics and Computer Science Division, Argonne National Lab. May 1996--August 1998.
Ph.D., Department of Industrial and Operations Engineering , University of Michigan, September 1995--May 1998.
M.S.E., Department of Industrial and Operations Engineering , University of Michigan, September 1995--December 1996.
B.S. Department of Mathematics, National Taiwan University, October 1989--June 1993.