Jian Sun 35 Olden Street, Room 414 Princeton, NJ 08544 Tel: 609-258-1795 Email: sunjian0813 AT gmail DOT com

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About Me I am a PostDoc in Department of Computer Science at Princeton University, working with Prof. Thomas A. Funkhouser. Before joining Princeton, I was a PostDoc at Stanford University, working with Prof. Leonidas J. Guibas. I earned my Ph.D in Computer Science from Department of Computer Science and Engineering at the Ohio State University under the supervision of Prof. Tamal K. Dey. Before that, I spent seven years in Tsinghua University and got my M.S. in computer science and B.E. in mechanical engineering.

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Research Interests Computational Geometry and Topology Computer Graphics and Geometry Processing Computational Biology High Dimensional Data Analysis

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Publications

• Road Network Reconstruction for Organizing Paths [pdf | bibtex ]
  written with Daniel Chen, Leonidas J. Guibas and John Hershberger;   SODA 2010,


• Constructing Multi-Resolution Markov State Models (MSMS) to Elucidate RNA Hairpin Folding Mechanisms [ pdf (coming soon) | bibtex ]
  X. Huang, Y. Yao, G. Bowman, J. Sun, L. Guibas, G. Carlsson and V. Pande;   PSB 2010,


• A Concise and Provably Informative Multi-Scale Signature Based on Heat Diffusion [ pdf | talk slides | bibtex ]
  written with Leonidas Guibas and Maks Ovsjanikov;   SGP 2009, Best Paper


• Integral Estimation from Point Cloud in d-dimensional space: a Geometric View [ pdf | bibtex ]
  written with Chuanjiang Luo and Yusu Wang;   SoCG 2009


• Topological Methods for Exploring Low-density States in Biomolecular Folding Pathways [ pdf | bibtex ]
  Yuan Yao, Jian Sun, Xuhui Huang, Gregory R. Bowman, Gurjeet Singh, Michael Lesnick, Leonidas J. Guibas, Vijay S. Pande, Gunnar Carlsson;   Journal of Chemical Physics


• Constructing Laplace Operator from Point Clouds in R^d [ pdf | talk slides | software | bibtex ]
  written with Mikhail Belkin and Yusu Wang;   SODA 2009


• Structural Insight into RNA Hairpin Folding Intermediates [ pdf | bibtex ]
  Gregory R. Bowman, Xuhui Huang, Yuan Yao, Jian Sun, Gunnar Carlsson, Leonidas J. Guibas, and Vijay S. Pande; J. Am. Chem. Soc., ja8032857, ASAP article, (2008)


• Global Intrinsic Symmetries of Shapes [ pdf | bibtex ]
  written with Leonidas J. Guibas and Maks Ovsjanikov;   SGP 2008, Best Student Paper


• Computing Geometry-aware Handle and Tunnel Loops in 3D Models [ pdf | bibtex ]
  written with David Cohen-Steiner, Tamal K. Dey and Kuiyu Li;   SIGGRAPH 2008


• Discrete Laplace Operator on Meshed Surfaces [ pdf | talk slides | software | bibtex ]
  written with Mikhail Belkin and Yusu Wang;   SoCG 2008


• On computing handle and tunnel loops [ pdf | software | bibtex ]
  written with T. K. Dey and Kuiyu Li;   IEEE Proc. Internat. Conf. Cyberworlds (NASAGEM workshop) (2007)
  Journal version is in Computer-Aided Design, in press, doi:10.1016/j.cad.2009.01.001


• Defining and Computing Curve-skeletons with Medial Geodesic Function [ pdf | talk slides | software | bibtex ]
  written with T. K. Dey;   SGP 2006.


• Normal and Feature Estimations from Noisy Point Clouds [ pdf | software | bibtex ]
  written with T. K. Dey;   FSTTCS 2006


• An Adaptive MLS Surface for Reconstruction with Guarantees [ pdf | talk slides | software | bibtex ]
  written with T. K. Dey;  SGP 2005.
  For those interested in the proofs, please see the extended version Technical Report OSU-CISRC-4-05-TR26, April, 2005.


• Normal Estimation for Point Clouds: A Comparison Study for a Voronoi Based Method [ pdf | talk slides | bibtex ]
  written with T. K. Dey and Gang Li;  SPBG 2005.

Technical Reports and Preprints

• Approximating loops in a shortest homology basis from point data [ pdf | bibtex ]
  written with Tamal K. Dey and Yusu Wang;   arXiv:0909.5654v1[cs.CG], 30th September 2009.


• A Fast Geometric Clustering Method on Conformation Space of Biomolecules [ pdf | bibtex ]
  Jian Sun, Yuan Yao, Xuhui Huang, Vijay Pande, Gunnar Carlsson and Leonidas J. Guibas;   preprint


• A faster algorithm for matching planar maps under the weak Fr\'{e}chet distance [ pdf | bibtex ]
  written with Daniel Chen, Leonidas J. Guibas and Qixing Huang   preprint


• Extremal Surface Based Projections Converge and Reconstruct with Isotopy [ pdf | bibtex ]
  written with T. K. Dey and S. Goswami;  Technical Report OSU-CISRC-05-TR25, April, 2005

Thesis

• Reconstructing and Analyzing Surfaces in 3-Space [ pdf | defense slides ]
  Ph.D Thesis, The Ohio State University, July 2007
  Adviser: T. K. Dey.