Current Research Interests

Our research has/had been co-operated with Environmental Engineering Department of UNBC, School of Optometry at Hong Kong Polytechnic University, CS department of Fudan University, Baosteel Corporation, Ruian TV University, Huazhoung University of Science & Technology, and Sunflare R & D Center. The researchers involved in our research include Professors/Students/Researchers at Hong Kong Polytechnic University, Fudan university, Ruian TV universiy, Sunflare R & D Center. The research has/had been supported by the Natural Sciences and Engineering Research Council of Canada (NSERC), Canada Foundation for Innovation (CFI), British Columbia Knowledge Development Fund, Natural Science Fundation of China, Baosteel R & D Fund, Shanghai Science Association International Research Fund, Sunflare R & D Research Fund, and by UNBC Seed Fund.

Our current research interests include:
• Visual field analysing system
• Internet Intelligent tutoring system
• Pattern recognition and image processing
• Voting Theory & Game Theory
• Computer Games
• Document processing and Information Retrieval
• Natural language processing
• Distributed cooperative computing
• Computational intelligence, such as fuzzy System, neural network
• Fast approximate practical approaches for solving some NP hard problems

Recent Research Projects

Area: Image Processing and Computer Vision
1. Facial and Image Analysis, Image Recognition and Pattern Recognition.
2. Co-operative Computing
Papers:
• Fan M, Zhang X, Du L, Chen L and Tao D, Semi-Supervised Learning Through Label Propagation on Geodesics. IEEE Transactions on Cybernetics, In Press. 2017.
• Chen L and Hassanpour N. Survey: How good are the current advances in image set based face identification? -- Experiments on three popular benchmarks with a na&‌iuml;ve approach. Computer Vision and Image Understanding. 160(2017): 1-23.
• Dhawal R, Chen L. (2017). A Copula Based Method for the Classification of Fish Species. International Journal of Cognitive Informatics and Natural Intelligence. 11(2017), No.1: 29-45.
• Liu, Y; Dominicis, L; Wei, B; Chen, L; Martin, R. (2015). Regularization Based Iterative Point Match Weighting for Accurate Rigid Transformation Estimation. IEEE Transactions on Visualization and Computer Graphics. 21(2015), No.9: 1058-1071.
• Chen L. (2014). A Fair Comparison Should be Based on the Same Protocol -- Comments on "Trainable Convolution Filters and Their Application to Face Recognition". IEEE Transactions on Pattern Recognition and Machine Intelligence. 36(2014), No.3: 622-623.
• Chen L. (2014). Robustness Instead of Accuracy Should be the Primary Objective for Subjective Pattern Recognition Research: Stability Analysis on Multicandidate Electoral College Versus Direct Popular Vote. Computational Intelligence. 30(2014), No.2: 167-204.
• L. Chen and N. Tokuda, A Unified Framework for Improving the Accuracy of All Holistic Face Identification Algorithms --Electoral College for Human Face Identification by Computing Machinery, Artificial Intelligence Review, 33 (2010), No. 1-2, 107-122, DOI: 10.1007/s10462-009-9139-0. Program Codes (Matlab)
  
• L.Chen, W. Xue and N. Tokuda, Classification of 2-dimensional array patterns: Assembling many small neural networks is better than using a large one, Neural Networks, 23(2010), No.6, 770-781.
• L. Chen, N. Tokuda and A. Nagai, Capacity Analysis for Two-level Decoupled Hamming Network for Associative Memory Under Noise Environment? Neural Networks, 20(2007), No.5, 598-609.
• L. Chen, J. Zeng and N. Tokuda, A `stereo' document representation for textual information retrieval", Journal of the American Society for Information Science and Technology, 57(2006), No.6, 768-774.
• L. Chen and N. Tokuda, "An Efficient Computational Approach for Multitarget Tracking from Bearing-Only Measurements by Decentralized Cooperative Processing", International Journal of Innovative Computing, Information and Control. 2(2006), No.3, 609-619.
• L. Chen, R. Cheng and S. Nilufar, Improving the Performance of 1D Object Classification by Using the Electoral College? Knowledge and Information Systems, 10(2006), No.1, 41-56.
• L. Chen and S. Nilufar, A Districted Neural Network for Start Codon Prediction, International Journal of Bioinformatics Research and Applications, 1(2005), No.2, 213--220.
• L. Chen and N. Tokuda, "A General Stability Analysis on Regional and National Voting Schemes Against Noise ---- Why is an electoral college more stable than a direct popular election?", Artificial Intelligence, 163(2005), No.1, 47--66.
• L. Chen, N. Tokuda and A. Nagai, "Capacity Analysis for Two-level Decoupled Hamming Network for Associative Memory Under Noise Environment", Neural Networks, 20(2007), No.5, 598-609.
• L. Chen and N. Tokuda, "Stability Analysis of Regional and National Voting Schemes by a Continuous Model", IEEE Transactions on Knowledge and Data Engineering, 15(2003), No.4, 1037-1042.
• L. Chen and N. Tokuda, "Robustness of Regional Matching Scheme over Global Matching Scheme", Artificial Intelligence, 144(2003), No.1-2, 213 - 232.
• L. Chen and N. Tokuda, "An Efficient Computational Approach for Multitarget Tracking from Bearing-Only Measurements by Decentralized Cooperative Processing", International Journal of Innovative Computing, Information and Control. 2(2006), No.3, 609-619.
• L. Chen and N. Tokuda, "A faster data assignment algorithm for maximum likelihood-based multitarget motion tracking with bearings-only measurements", Mathematics and Computers in Simulation, Elsevier Science Press, 57 (2001), no.1-2, 109--120.
• L. Chen and N.Tokuda, "An Improved Solution to ML-Based Multitarget Motion Tracking with Bearings-Only Measurements", Accepted and to appear in International Journal of Computational Engineering Science .
• L. Chen, N. Tokuda and A. Nagai, "Robustness of Regional Matching Over Global Matching --Experiments and Applications to Eigenface-Based Face Recognition", In: M. R. Syed and O. R. Baiocchi eds: Intelligent Multimedia, Computing and Communications –Technologies and Applications of the Future (Proceedings of 2001 International Conference on Intelligent Multimedia and Distance Education, Fargo, North Dakota, USA, June 1-3, 2001), pp.38--47, John Wiley & Sons, Inc., New York, 2001.
• L. Chen and N.Tokuda, "Stability analysis of voting schemes on a continuous model", Proceedings of 2000 IEEE International Conference on Systems, Man, and Cybernetics, pp. 2901--2906, Nashville, Tennessee, USA, 8-11 October 2000.
• L.Chen and N. Tokuda, "Multitarget Tracking By Distributed Cooperative Processing", In: M. Syed, O.Baiocchi and G.Lasker eds: Advances in Intelligent Computing and Multimedia Systems (Proceedings of International Symposium on Intelligent Multimedia and Distance Education, Baden Baden, Germany, August 2-7, 1999), pp.217--222, The International Institute for Advanced Studies in Systems Research and Cybernetics, University of Windsor, Canada, 1999.
• L. Chen and N. Tokuda, "Regional Voting versus National Voting --Stability of Regional Voting", Proceedings of International ICSC Congress on Computational Intelligence Methods and Applications, Rochester, New York, June 22-25, 1999.
Area: Natural Language Processing
3. Intelligent Language Tutoring System
Intelligent Tutoring System( Japanese language support is needed, which you can download from MicroSoft. )
4. Latent Semantic Index, Translation Memory and Summarization based Cross Language Information Retrieval System.
Papers:
• L. Chen, N. Tokuda and P. Hou, "A table look-up parser in online ILTS applications", Computer Assisted Language Learning, 18(2005), No.1-2, 49--62.
• N. Tokuda and L. Chen, "A New KE-Free Online ICALL System Featuring Error Contingent Feedback", Computer Assisted Language Learning, 17(2004), No.2, 177--201.
• L. Chen, N. Tokuda and D. Xiao, "A POST Parser-Based Learner Model for Template-Based ICALL for Japanese-English Writing Skills", Computer Assisted Language Learning. 15(2002), No.4, 357-372.
• N. Tokuda and L. Chen, "An Online Intelligent Tutoring System For Language Translation", IEEE MULTIMEDIA, 8(2001), No.3, 46--55.
• L. Chen and N. Tokuda, "Bug Diagnosis By String Matching: Application to ILTS for Translation", CALICO Journal, 20(2003), No. 2, 227 - 244.
• L. Chen, N. Tokuda and A. Nagai, "Probabilistic Information Retrieval Method Based on Differential Latent Semantic Index Space", IEICE Trans. on Information and Systems, E84-D (2001), no. 7, 910--914.
• N. Tokuda, L. Huang, L. Chen, M. Kusakabe and A. Nagai "Template-Automaton-Based ILTS for Japanese-English Composition", Transactions of IEICE (in Japanese), J84-D-I (2001), no.7, 1089--1101.
• L. Chen and N. Tokuda, "A new template-template-based ICALL system for second language composition course", Accepted and to appear in CALICO [special issue on Error Analysis and Error Correction in Computer-Assisted Language Learning] (Date of acceptance: October 24, 2002).
• L. Chen and N. Tokuda, "A New Buggy Rule And Template-Template Based Tutorial Dialogue System", accepted and to appear in 2003 AAAI Spring Symposium Series Workshop on Natural Language Generation in Spoken and Written Dialogue, Palo Alto, CA, March 24-26, 2003.
• N. Tokuda and L. Chen, "A New Development In Online ICALL System: KE-Free English Composition Course With Automatic Corrections", Proceedings of the CALL 2002, Antwerp, Belgium, August 18-20, 2002.
• N. Tokuda, L. Chen, L. Huang, D. Cripps, M. Tokuda and H. Sasai, "System Evaluation of A Template-Based ILTS for Foreign Language Composition", In: J. D. Moore, C. L. Redfield and W. L. Johnson eds: Artificial Intelligence in Education–AI-ED in the Wired and Wireless Future (The 10th International Conference on Artificial Intelligence in Education, San Antonio, TX, USA, May 19-23-, 2001), pp.601--603, IOS Press, Ohmsha, USA, 2001.
• L. Chen, N. Tokuda and D. Xiao, "POST Parser-Based Learners' Model of the Template- Based ILTS for Japanese-English Composition", The workshop of Computer Assisted Language Learning in The 10th International Conference on Artificial Intelligence in Education (AI-ED 2001), pp.24--31, San Antonio, TX, USA, May 20, 2001.
• N.Tokuda and L.Chen, "New Development in Online Interactive Computer Assisted Language Learning System", Keynote Speech in CALL Workshop in AIED2001,San Atonio, Texas, May 20, 2001
• N.Tokuda, L.Chen, Q.Zhong, L.Huang, H.Nakamoto, and Y.Sasai, "Intelligent Language Tutoring System for English-Japanese Composition", Demonstration at AIED2001, San Antonio, Texas, May 20, 2001
• N.Tokuda, L.Chen and Q.Zhong, "AZALEA: A KE (Knowledge Engineer)-Free ICALL for Japanese-English Translation", Proceedings of NLPRS (Natural Language Processing Pacific Rim Symposium),November, 2001.
• L. Chen and N. Tokuda, "An LSI and TM based Cross-language Information Retrieval System Providing Text Summaries", RIAO 2000: Content-Based Multimedia Information Access. pp.1099--1106, Paris, Apr. 2000.
• L. Chen and N. Tokuda, "A New Diagnostic System for J-E Translation ITS By Global Matching Algorithm and POST Parser", Proceedings of Machine Translation Summit VII '99, pp.608--616, Singapore, September 13 - 17, 1999.
• N. Tokuda, L.Chen, L.Huang and A. Nagai, "A Template-Based Online Intelligent Tutoring System For Language Translation", In: M. R. Syed and O. R. Baiocchi et.al eds: Advances in Multimedia and Distance Education (Proceedings of International Symposium on Intelligent Multimedia and Distance Education, Baden Baden, Germany, August 2-7, 1999), pp.123--128, The International Institute for Advanced Studies in Systems Research and Cybernetics, University of Windsor, Canada, 1999.
• N. Tokuda and L. Chen, L. Huang and A. Nagai, "An Interactive, Multimedia-Based intelligent Tutoring System For Language Translation", Proceedings of IFIP Sixth International Conference on Distributed Multimedia Systems (DMS'99), pp.241-248, University of Aizu, Japan, July 26-30, 1999.
• N. Tokuda and L. Chen, "A New Efficient Diagnostic System for Language Translation ITS by Global Template Matching", Proceedings of the International Conference on Artificial Intelligence (IC-AI'99), Las Vegas, USA, pp.129-135, June 28-July 1, 1999.
Area: Fuzzy System
5. Multi-dimentional fuzzy system and application
Papers:
• L. Chen and N. Tokuda, "An Efficient Algorithm for Automatically Generating Multi-Variable Fuzzy Systems by Fourier Series Method", IEEE Tran. SMC Part B, 32(2002), No.5, 622--629.
• L. Chen, N. Tokuda, X. Zhang and Y. He, "A New Scheme for an Automatic Generation of Multi-Variable Fuzzy Systems", Fuzzy Sets and Systems, Elsevier Science Press, 120 (2001), no. 2, 323--329.
• L. Chen and N. Tokuda, "Generation Multi-Variable Fuzzy Systems by Fourier Series Decomposition", Proceedings of International ICSC Congress on Computational Intelligence Methods and Applications, Rochester, New York, June 22-25, 1999.
• L. Chen, X. Zhang and Y. He, "A Parallel Approach for the Automatic Generation of Fuzzy Systems", In: D. Ruan, P. D'hondt, P. Govaerts and E.E. Kerre, Eds: Intelligent Systems and Soft Computing for Nuclear Science and Industry. Proc. Second Int'l FLINS Workshop, pp. 41--48. World Scientific, Singapore, 1996.
• L. Chen, J. Yan and Y. He, "A New Approach for the Automatic Generation of Membership Functions and Rules of Multi-Variable Fuzzy System", Proceedings of IEEE 1995 International Conference On Neural networks, Perth, Australia, Vol.3, pp.1342-1346, Nov.27-Dec.1, 1995.

Area: Computational Complexity
6. Game theory and computational complexity
Papers:

• L. Chen and N. Tokuda, "n-Tokyoites' loop-line commuter problem", accepted and to appear in Discrete Mathematics.
• L. Chen and N. Tokuda, "A note on Category and measure in complexity classes", Inform. Process. Lett. 73 (2000), no. 5-6, 167--168.

Area: Computer Games
Papers:

• J. Tang and L. Chen, "A Territory based Path Finding Approach for Computer Games", Proceedings of 4th International North-American Conference on Intelligent Games and Simulation (GAMEON-NA 2008), pp.15-20, Aug.13-15, 2008, Montreal, Canada.
• J. Tang and L. Chen, "Content-Adjustment Mechanism for Console Gaming", Proceedings of 4th International North-American Conference on Intelligent Games and Simulation (GAMEON-NA 2008), pp.37-39, Aug.13-15, 2008, Montreal, Canada.

Maintained by Liang Chen.