Li Chen's Homepage

		Li Chen, Ph.D. Associate Professor   Department of Computer Science and Information Technology University of the District of Columbia 4200 Connecticut Avenue, N.W. Washington, DC 20008 Office 42/112-A Office Tel: (202) 274-6301 Email: lchen@udc.edu
		New Books: Li Chen, Discrete Surfaces and Manifolds, June 2004.

Education

	Ph.D.  University of Bedfordshire (Renamed from U of Luton, Luton, UK), 2001. Advisor: Dr. Osei Adjei.
		PhD Thesis: lambda-connectedness and  its application to image segmentation, recognition, and reconstruction.
	MS of Computer Science, Utah State University (Logan, USA), 1995.  Advisor: Dr. Don Cooley
		MS Thesis: Possibility functions based fuzzy neural networks and their applications to image processing
	BS of Computer Science, Wuhan University (Wuhan, China), 1982.  Advisor:  Li Qrong-Zhang
		BS Dissertation: Matrix representations of some combinatorial problems and their applications.

More about the three thesis and related publications.

Current Research and Teaching Areas:

• Image Processing
• Object Oriented Design and Programming
• Algorithm Design and Complexity

Current Research Topics:

• 3D Object Tracking and Search  
• lambda-Connectedness and its Applications  
• Intelligent Adaptive Learning in Java Training Course  
• Fuzzy Relation Equations  

Publications :

• Publication List
• Three Recent Articles
  • Chen, and Paul Wang, Fuzzy Relation Equations (II): The Branch-Point-Solutions and the Categorized Minimal Solutions, Soft Computing Journal, Vol 11, No 1, pp33-40, Jan 2007. (published online Mar 2006).
  • G. Agnarsson and Chen, On the extension of vertex maps to graph homomorphisms, Discrete Mathematics, Vol 306, No 17,  pp 2021-2030,  Sept. 2006. 
  • C-T Lu, Y. Kou, J. Zhao, and L. Chen, Detecting and Tracking Region Outliers in Meteorological Data, Information Sciences,   to appear, (Nov 20, 2006 online.) 
• Three of the Most Significant Articles (in the author's view)
  • Chen, The necessary and sufficient condition and the efficient algorithms for gradually varied fill, Chinese Science Bulletin, 35:10(1990). (Zbl, It can also be found in the Abstracts of SIAM Conference on Geometric Design, 1989.)
  • Chen and J. Zhang, Digital manifolds: An intuitive definition and some properties, In Proceedings of Second ACM Symp. on Solid Modeling and Applications, pp 459-460, 1993. 
  • Chen, An optimal generating algorithm for matrix of equal-weight column and quasiequal-weight row, Journal of Nanjing Institute of Tech, 2(1986). (Zbl, In Chinese)
• Three of the Articles Having or Potentially Having Impacts to New Research  (in the author's view)
  • Chen, and Paul Wang, Fuzzy Relation Equations (II): The Branch-Point-Solutions and the Categorized Minimal Solutions, Soft Computing Journal, Vol 11, No 1, pp33-40, Jan 2007. (published online Mar 2006).
  • G. Agnarsson and Chen, On the extension of vertex maps to graph homomorphisms, Discrete Mathematics, Vol 306, No 17,  pp 2021-2030,  Sept. 2006. 
  • Chen, D. Cooley and J. Zhang, Equivalence between two definitions of digital surfaces, Information Sciences, Vol 115, 201-220, 1999. (This article has been cited by a text book and several papers from other international researchers.)

Awards :

• Outstanding Junior Faculty Award, SEAS, University of the District of Columbia 2005.
• One of the faculty members of Department of Computer Science who received Excellent Teaching Award from University of North Dakota in 2001.
• Outstanding Teacher of Wuhan University (1991)
• Outstanding Scientist of Wuhan University (1990)
• The Award Research Fund of The Academy of Science of China for Young Scientist (1987)
• Listed by some Who's Who s 
• .....

Teaching (Fall 2006)

• Computer Architecture 
• Computer Science III: Data Structures
• Senior Projects 

Research Link (under construction)

Software Development (under construction)

Other Links

• Luton University (UK) The England newest university.  This is a link to Computing at U of Luton.
• Utah State University The second research-one university in Utah. This is a link to Computer Science at USU.
• Wuhan University (China)(Click here for its English-Version) One of the top universities in China
• Spiricon, Inc. World leading company in Laser Beam Analysis.
• SorensonMedia, Inc. World leading company in Video Image Compression.

Li Chen has mixed features of computer science and software engineering. In the past twenty five years, he has worked as a professional software engineer, while he retaining his career as an amateur computer scientist. He continued to develop computer software while working as a professional computer scientist and an educator.

He has published over 50 research papers in several areas of computer science and applied mathematics in research journals and conference proceedings including the Chinese Science Bulletin, IEEE Tran.on SMC, Soft Computing, Information Sciences, and Chinese Journal of Computers. He has developed, alone or jointly, over a dozen software systems or packages in various computer systems using different computer languages including Unix, PDP, IBM-PC, C/C++, FORTRAN, BASIC, TOOLBOOK, X-Windows, MS-Windows, etc.

His most important theoretical contributions include:

• The definition of Gradually Varied Surfaces and discovery of the necessary and sufficient condition for Gradually Varied Interpolation. (A related paper was reviewed by Zbl and indexed by MR )
• (With J. Zhang and D. Cooley) The definition of Digital Manifolds in direct adjacency and the classification theorem for simple surface points in 3D digital spaces. (Three related papers were reviewed by Zbl and MR )
• The optimal algorithm for the Optimal Hamming code check matrix based a type of recursive matrix that he proposed.( The paper was reviewed by Zbl and indexed by MR)
• (With P.P. Wang) The branch-point solution in fuzzy relation equations
• (With H-D Cheng and J. Zhang) lambda-connected image segmentation   

His software developments include:

• The first special software system for lithology classification and oil-gas prediction in China.  ( He was the project leader, 1990.)
• World leading Spiricon M-square 101 for the laser beam propagation analysis system. (He was the key programmer, 1995.)
• World leading Spiricon LBA-PC for the laser beam profile analysis system. (He was one of the key programmers, 1997.)
• The World leading video compressor by SorensonMedia, SorensonVideo 3 for QuickTime. (He was one of the key programmers who completed the pre-alpha version, 2000).

Chen has received many awards and honors. The most remarkable was the "Top 100 Young Scientist Award Fund" in China in 1987. He was also "a record holder" for the youngest person to publish a regular research paper alone in Chinese Journal of Computers, the best journal in computer science in China during that time in 1984 when he was 23 years old. This paper was reviewed by the Mathematical Review and Soviet Math Abstract. Chen wrote his first research paper in 1980 when he was 19 years old. The paper won the Student Research Paper Award of Wuhan University in 1981. It was published later and reviewed by the German Math Abstract (Zbl).

Chen was a good Chinese flute player in his home county of Lishui, China when he was a high school student. He still likes to play the instrument occasionally. He likes classical music, but he can hardly understand it. He sometimes plays Ping-Pong, but he can be defeated easily. He plays Chinese Chess sometimes and his skill in this event is a little bit better than his Ping-Pong technique.