About

(For those who cannot pronounce my name, I go with Nu and Dan.)

I am a PhD Candidate in
ACO program and a member of Theory group, College of Computing, Georgia Institute of Technology. My advisor is Richard J. LiptonMy resume is here

Before coming to Georgia Tech, I got a Bachelor of Computer Engineering from Kasetsart University, Thailand, in 2003. I was very fortunate to work with Jittat Fakcharoenphol and people in Theory group at Kasetsart University.

My research interest is applied algorithms: I am generally interested in the design and analysis of algorithms with applications. I am currently working on the following topics. (Related papers are listed. See all papers and publications on the research page.)


Distributed Random Walks
How many rounds do you need to sample points from a network in a random walk style? 

Near-Optimal Sublinear Time Bounds for Distributed Random Walks [details, pdf, arxiv]
with Atish Das Sarma,  Gogal Pandurangan and Prasad Tetali
Submitted

Fast Distributed Random Walks [detailspdfslides]
with Atish Das Sarma and Gogal Pandurangan 
PODC 2009: 28th Annual ACM SIGACT-SIGOPS Symposium on Principles of Distributed Computin[wiki]



Representative Database
How to present a huge database to a user so that she can easily find a desired tuple? 

Regret-Minimizing Representative Databases  
Danupon NanongkaiAtish Das SarmaAshwin LallRichard J. LiptonJun Xu
(Names in this paper are not in alphabetical order.)
Coming soon

Randomized Multi-pass Streaming Skyline Algorithms [detailspdfslides
with Atish Das SarmaAshwin Lall, and Jun Xu
VLDB 2009Proceedings of the VLDB Endowment, Vol 2, No. 1-2, pp 85-96, 2009 [wiki]



Approximation Algorithms
I am working on Stackelberg problems.

Stackelberg Pricing is Hard to Approximate within 2−ε [details, pdfarXiv]
with Parinya Chalermsook and Bundit Lekhanukit
Submitted



Select papers in other topics

Faster Algorithms for Semi-Matching Problems [details]
with Jittat Fakcharoenphol and Bundit Lekhanukit
Coming Soon

Best-Order Streaming Model [detailspdf, slides]
with Atish Das Sarma and Richard J. Lipton
TAMC 2009: 6th Annual Conference on Theory and Applications of Models of Computation [link]
Invited to Special Issue of Theoretical Computer Science [wiki]

A deterministic nearly linear-time algorithm for finding minimum cuts in planar graphs [detailspdfpsslides]
with Parinya Chalermsook and Jittat Fakcharoenphol 
SODA 2004 (Short paper): 15th Annual ACM-SIAM Symposium on Discrete Algorithms [link]