Address: 266 Ferst Drive, Atlanta, GA 30332
Office: Klaus Advanced Computing Building, room #1305
Email: dongryel At cc-dot gatech DOT-edu
CV: (pdf)

I am a 5th year Ph.D. student in Computer Science. I came to Georgia Tech after finishing my undergraduate degrees in computer science and mathematics at Carnegie Mellon University. My advisor is Professor Alexander Gray. I am a part of FASTLab which specializes in the state-of-the-art large-scale data analysis methods. I am a founder and a senior developer at Analytics 1305, a start-up company developing a large scale machine learning framework.

Research Interests

  • Nonparametric methods (kernel density estimation, kernel regression)
  • Computational techniques (generalized fast multipole methods)
  • Monte Carlo methods
  • Efficient indexing structures for multidimensional data (trees)
  • Numerical linear algebra (multigrid methods, iterative methods, matrix factorizations)

Publications

Linear-time Algorithms for Pairwise Statistical Problems (pdf)
Parikshit Ram, Dongryeol Lee, William March, and Alexander Gray.
To appear in Proceedings of NIPS, 2009
(Selected for a poster spotlight)

Rank-Approximate Nearest Neighbor Search: Retaining Meaning and Speed in High Dimensions (pdf)
Parikshit Ram, Dongryeol Lee, Hua Ouyang, and Alexander Gray.
To appear in Proceedings of NIPS, 2009

Fast High-dimensional Kernel Summations Using the Monte Carlo Multipole Method (pdf)
Dongryeol Lee and Alexander Gray.
In Proccedings of NIPS, 2008
Poster

Fast Mean Shift with Accurate and Stable Convergence (pdf) (ps) (djvu)
Ping Wang, Dongryeol Lee, Alexander Gray, and James M. Rehg.
In Proceedings of AISTATS 2007.
Poster

Faster Gaussian Summation: Theory and Experiment (pdf) (ps) (djvu)
Dongryeol Lee and Alexander Gray.
In Proceedings of UAI vol. 22, 2006.
The datasets used for the paper (due to popular request)

Dual-Tree Fast Gauss Transforms (pdf) (ps) (djvu) (bibtex)
Dongryeol Lee, Alexander Gray, and Andrew Moore.
In Proceedings of NIPS vol. 18, 2005.
Poster