YiJen Chiang
Associate Professor of Computer Science
How to Reach Me
 chiang@nyu.edu
 Dept. of Computer Science and Engineering
 Tandon School of Engineering
 New York University
 370 Jay Street, 11th Floor
 Brooklyn, NY 11201
 USA
 +1 (646) 9973395 (office)
 +1 (646) 9973609 (fax)
Research Interests
Computer Graphics and Visualization:
big data computation, analysis and visualization; robot motion
planning; outofcore graphics and scientific visualization;
isosurface extraction; surface simplification and viewdependent
rendering; volume simplification; graphics compression; volume
rendering; computational topology and topologydriven visualization.
Computer Algorithms:
outofcore algorithms; computational geometry; algorithmic motion
planning; graph algorithms; approximation algorithms; data structures;
computational topology.
Teaching
CS6533/CS4533: Interactive Computer Graphics (every semester from Fall 1998 to Fall 2011,
every spring semester from Spring 2012 to Spring 2015, Fall 2015, and
every semester from Fall 2017 to Fall 2019; latest:
Fall 2019 (CS4533))
CS6033: Design and Analysis of Algorithms I
(Fall 2015, Fall 2017, Spring 2019, Spring 2020)
CS6043: Design and Analysis of Algorithms II (every spring semester from
Spring 2000 to Spring 2007, and every semester from Spring 2008 to Fall 2014;
Spring 2016, and Fall 2019)
CS1122: Introduction to Computer Science (Spring 2020)
CS6005, CS6010, CS6015, CS6020, CS6025: Guided Studies in Computer
Science: Graduate Projects (Fall 2007)
CS394: Special Topics in Computer Science: Senior Projects (Fall 2004,
Fall 2005, and Fall 2006)
CS903: Special Topics: Computational Geometry (Spring 1999)
Recent Papers CoChair and Program Committee Member
 Papers CoChair,
IS&T Visualization and Data Analysis (VDA), 2020
 Papers CoChair,
IS&T Visualization and Data Analysis (VDA), 2019
 Papers CoChair,
IS&T Visualization and Data Analysis (VDA), 2018
 Area CoChair (for the Visualization area),
International Symposium on Visual Computing (ISVC), 2011
 PC Member,
IEEE/Eurographics Conference on Visualization (EuroVis), 2020
 PC Member,
International Symposium on Visual Computing (ISVC), 2020
 PC Member,
International Symposium on Visual Computing (ISVC), 2019
 PC Member,
International Symposium on Visual Computing (ISVC), 2018
 PC Member,
IEEE/Eurographics Conference on Visualization (EuroVis), 2017
 PC Member,
IS&T Visualization and Data Analysis (VDA), 2017
 PC Member,
IEEE/Eurographics Conference on Visualization (EuroVis), 2016
 PC Member,
International Symposium on Visual Computing (ISVC), 2016
 PC Member,
IS&T Visualization and Data Analysis (VDA), 2016
 PC Member,
IEEE/Eurographics Conference on Visualization (EuroVis), 2015
(for both Regular Papers and Short Papers)
 PC Member,
International Symposium on Visual Computing (ISVC), 2015
 PC Member,
SPIE Visualization and Data Analysis (VDA), 2015
 PC Member,
IEEE/Eurographics Conference on Visualization (EuroVis), 2014
 PC Member,
International Symposium on Visual Computing (ISVC), 2014
 PC Member,
SPIE Visualization and Data Analysis (VDA), 2014
 PC Member,
International Symposium on Visual Computing (ISVC), 2013
 PC Member,
SPIE Visualization and Data Analysis (VDA), 2013
 PC Member,
IEEE/Eurographics Conference on Visualization (EuroVis), 2012
 PC Member,
International Symposium on Visual Computing (ISVC), 2012
 PC Member,
SPIE Visualization and Data Analysis (VDA), 2012
 PC Member,
Eurographics (EG) 2011 Posters
 PC Member,
IEEE Visualization Conference (Vis), 2010
 PC Member,
International Symposium on Visual Computing (ISVC), 2010
 PC Member,
International Conference on Information Visualization Theory and
Applications (IVAPP), 2010
 PC Member,
IEEE Visualization Conference (Vis), 2009
 PC Member,
International Symposium on Visual Computing (ISVC), 2009
 PC Member,
IEEE Visualization Conference (Vis), 2008
 PC Member,
International Symposium on Visual Computing (ISVC), 2008
Tutorial Courses
Papers
Computer Algorithms

``New Approximation Results for the Maximum Scatter TSP''
(journal version),
Y.J. Chiang.
Journal version appeared in
Algorithmica,
vol. 41(4), pp. 309341, 2005.

``TwoPoint Euclidean Shortest Path Queries in the Plane''
(conference version),
Y.J. Chiang and J.S.B. Mitchell.
Proc. ACMSIAM Symp. on Discrete Algorithms (SODA'99),
pp. 215224, 1999.

``On the Maximum Scatter TSP'' (journal version,
contains more results than the
conference version),
E.M. Arkin, Y.J. Chiang, J.S.B. Mitchell, S.S. Skiena, and T.C. Yang.
Journal version appeared in
SIAM Journal on Computing,
vol. 29(2), pp. 515544, 1999.
Conference version appeared in
Proc. ACMSIAM Symp. on Discrete Algorithms (SODA'97),
pp. 211220, 1997.

``On MinimumArea Hulls'' (journal version).
E.M. Arkin, Y.J. Chiang, M. Held, J.S.B. Mitchell,
V. Sacristan, S.S. Skiena, and T.C. Yang.
Algorithmica, Special Issue for ESA'96,
vol. 21, pp. 119136, 1998.
Conference version appeared in
Proc. European Symp. on Algorithms (ESA'96), Lecture Notes in Computer
Science,
vol. 1136, pp. 334348, 1996.

``ExternalMemory Graph Algorithms'' (conference version),
Y.J. Chiang, M.T. Goodrich, E.F. Grove, R. Tamassia, D.E. Vengroff,
and J.S. Vitter.
Proc. ACMSIAM Symp. on Discrete Algorithms (SODA'95),
pp. 139149, 1995.

``Optimal Shortest Path and MinimumLink Path Queries Between Two Convex
Polygons Inside
a Simple Polygonal Obstacle'' (journal version),
Y.J. Chiang and R. Tamassia.
Int. J. of Computational Geometry & Applications, Special Issue,
E.M.Arkin, J.S.B. Mitchell and S. Skiena (Ed.), vol. 7(1 & 2), pp. 85121,
1997.
Conference version appeared in
Proc. European Symp. on Algorithms (ESA'94), Lecture Notes in Computer
Science,
vol. 855, pp. 266277, 1994.

``A Unified Approach to Dynamic Point Location, Ray Shooting and Shortest Paths in Planar
Maps''
(journal version),
Y.J. Chiang, F.P. Preparata, and R. Tamassia.
SIAM Journal on Computing,
vol. 25(1), pp. 207233, 1996.
Conference version appeared in
Proc. ACMSIAM Symp. on Discrete Algorithms (SODA'93),
pp. 4453, 1993.

``Dynamization of the Trapezoid Method for Planar Point Location in Monotone
Subdivisions''
(journal version),
Y.J. Chiang and R. Tamassia.
Int. J. of Computational Geometry & Applications, Special Issue,
D.T. Lee (Ed.), vol. 2(3), pp. 311333, 1992.
Conference version appeared in
Proc. ACM Symp. on Computational Geometry (SoCG'91),
pp. 6170, 1991.

``Dynamic Algorithms in Computational Geometry''
(journal version),
Y.J. Chiang and R. Tamassia.
Proceedings of the IEEE, Special Issue on Computational Geometry,
G. Toussaint (Ed.), vol. 80(9),
pp. 14121434, 1992.
Ph.D. Thesis:
``Dynamic and I/OEfficient Algorithms for Computational Geometry and
Graph Problems: Theoretical and Experimental Results'' (separate web page)
Last update: 2/20/2020