Welcome to Zhendong's home
Courtesy by Garin Wiggins
Zhendong Wan
Associate Research Scientist, Drexel University,
University Crossing 132
Department of Computer Science
Drexel University
Email:
Phone: (215)8954910
Education
 Ph.D., Computer Science,
University of Delaware,
Newark, Delaware, Summer 2005.
Thesis advisor: Prof. Saunders
Thesis title: Computing the Smith Forms of Integer Matrices and Solving Related Problems
 MS, Computer Science,
University of Delaware,
Newark, Delware, May 2003.
 MS, Mathematics,
SUNY at Stony Brook,
Stony Brook, NY, May 2001.
 BS, Mathematics and Applied Mathematics,
USTC,
China, July 1999.
Research Interests
Software Engeering
Computer Algebra Systems
Symbolic (exact) computation
Scientific computing
Automated performance tuning
Data structures, Algorithms
Skills

Programming Languags
From time to time, some people get the wrong impression about Ph.D.
majoring in computer science by
thinking they have very strong theoretical skills, but poor in programming. However,
that is not totally true. As far as I know, many Ph.D.s (including myself)
are very good programmers.
 Proficient in C++, POSIX. I have been programming in C++ since 2000.
 Proficient in JAVA. Recently, my project is based on JAVA.
 Others: Lisp, Maple, Mathematica, JSP. I use these high level languages often.
Environments
 Unix, Linux, BSD, SUN Solaris
 J2Se, J2SE
 Windows (not very often)
Foreign languages
Current Project

WICS
The Wireless Internet Collaboration System is a Serice Oriented Architecuter based system
that allows one or more participants
working on smartphones or laptops to exchange mathematical formulas,
geometric drawings and chat messages, and to access diverse computer
algebra services while sharing the results.
It is based on J2SE and J2ME technologies.
It consists of 80 JAVA files, near 13,000 lines of JAVA codes.
Working with Werner Krandick and Shawn Pierce!

Develop a tool to discover the repeated patterns in the mathforum archive
Develop an automatic system to answer questions (ongoing)
Working with Bruce Char, Jeremy Johnson.
LinBox
A C++ template library for exact, highperformance linear algebra computation with dense,
sparse, and structured matrices over the integers and over finite fields.
It consists of near 400 C++ files, near 125,000 lines of C++ codes.
It uses GMP, NTL, Givaro, BLAS, LAPACK, and doxygen packages.
Working with B. David Saunders and other LinBox members
Other Interests
From time to time, I have some other interests besides research (to amuse myself).
The reasons I study them are my curiosity and their applibilities.
Probability and statistics
I took a few courses in statistics during my undergraduate study.
I have been reading a few interesting statistical books.
Stock
It is widely accepted that the model which holds that stock prices are lognormally
distributed.
I am reading the book, "OPTIONS, FUTURES, and OTHER DERIVTIVES" by John C. Hull.
Publications
Journal papers
 B. David Saunders and Zhendong Wan
An engineered algorithm for the Smith form of
an integer matrix, Submitted to ACM TOMS, 2006
 Zhendong Wan,
An algorithm to solve integer linear systems exactly using
numerical methods
, Journal of Symbolic Computation, volume 41, issue 6, p621632, 2006.
Conference Proceedings
 JeanGuillaume Dumas, Clement Pernet, and Zhendong Wan,
Efficient Computation of the Characteristic Polynomial,
ISSAC 2005, Beijing, China.
 Jeffrey Adamas, B. David Saunders, and Zhendong Wan,
Signature of Symmetric Rational Matrices and the Unitary Dual of Lie Groups,
ISSAC 2005, Beijing, China.
 B. David Saunders and Zhendong Wan,
Smith Normal Form of Dense Integer Matrices, Fast Algorithms into Practice,
ISSAC 2004, Spain.
Conference Presentations
 Austin Lobo, B. David Saunders, and Zhendong Wan,
Rank and Smith Form of extremely sparse matrices,
ACA 2003, Raleigh, NC.
 Ahmet Duran, B. David Saunders, and Zhendong Wan,
Hybrid algorithm for rank of sparse matrices ,
SIAM Applied Linear Algebra conference, 2003, Williamburge, VA.
Conference Posters
 Werner Krandick, Shawn S. Pierce, and Zhendong Wan, Towards collaboration across display diversity, ISSAC'06 poster, Genoa, Italy
 B. David Saunders and Zhendong Wan,
Fast Early Termination Technique in Symbolic Linear Algebra, ECCAD'05 Poster, Ashland, OH
 B. David Saunders and Zhendong Wan,
Tighter Probability Bounds for Randomized Linear Algebra Algorithms,
ECCAD'04 Poster, Waterloo, ON, Canada.
 Clement Pernet and Zhendong Wan,
LU based algorithms for the characteristic polynomial over a finite field,
ISSAC'03 Poster , Philly, PA.
 Ahmet Duran, B. David Saunders, and Zhendong Wan,
Rank of sparse {0,1} matrices,
ECCAD'03 Poster , Clemson, SC.
 JeanGuillaume Dumas, William Turner, and Zhendong Wan,
Exact solution to large sparse integer linear systems,
Poster at ECCAD 2002, New York, NY.
Member of
 ACM
 SIAM
Recent honors
 Frank A. Pehrson Graduate Student Achievement Award, University of Delaware, 2005.
Coming Conferences
Some links
Last update: February 6, 2006