XU, Lei

Professor of Computer Science and Engineering

B.E.(Harbin Institute of Tech), M.E., PhD (Tsinghua Univ), Fellow of IEEE, IAPR Fellow, European Academy of Sciences.


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·      Lei Xu is a professor of Computer Science and Engineering Chinese Univ Hong Kong (CUHK) where he first joined as a senior lecturer in 1993, became a professor in 1996 and then took the current chair professor position in 2002.

·      Also, He serves as a deputy director of the Hong Kong Bioinformatics Centre.

·      Moreover, he is a Chang Jiang Chair Professor of Peking University, a guest Professor of Institute of Biophysics, Chinese Academy of Sciences, an honorary Professor (名誉教授) of Xidian University.


Lei Xu completed his Ph.D thesis at Tsinghua Univ by the end of 1986, then joined Dept. Math, Peking Univ in 1987 first as a postdoc and then was exceptionally promoted to associate professor in 1988 and to a full professor in 1992. During 1989-93, he worked at several universities in Finland, Canada and USA, including Harvard and MIT. He has published dozens of journal papers and also many papers in conference proceedings and edited books, covering the areas of Statistical Learning and Neural Networks, Financial Engineering, Computer Vision and Pattern Recognition, Signal Processing, and Artificial Intelligence. Also, he has given over 50 keynote /invited / tutorial lectures at major international conferences on Computational Intelligence and Neural Networks, and has been internationally known with his several well-cited contributions on adaptive PCA and independence learning, classifier combination and mixture model based learning, rival penalized competition, etc, as well as his Bayesian Ying-Yang unified statistical learning system and theory. Also, he and his colleague E.Oja's invention on Randomized Hough Transform has a widely impact in the field of pattern recognition and computer vision too. e.g., up to the early 2014, his papers got over 4500 SCI-citations and over 10000 Google Scholar citations, with the top-10 papers getting over 2500 SCI-citations and about 6000 Google Scholar citations.


Prof. Xu is the editor-in-chief of Spinger open access Journal Applied Informatics. Also, he has served as an associate editor for eight academic journals, especially on neurocomputing, e.g., including Neural Networks (1995-present) and IEEE Trans. on Neural Networks (1994-98). Moreover, he has served as a governor on the Governing Board of International Neural Networks Society (INNS) (2001-03), as well as the INNS award committee (2002-03) and  the Fellow committee of IEEE Computational Intelligence society (06), the chair of Computational Finance Technical Committee of IEEE Neural Networks Society (2001-03), and a past president of Asian-Pacific Neural Networks Assembly. He is also served as a general chair of IEEE Intl Conf. on CIFER03, Intl Confs IDEAL98, IDEAL00, Joint-ICANN-ICONIP03 Program Committee co-chair, a program committee chair of ICONIP96 and a honorary chair of ICONIP06, and the chairs of two NIPS Workshops, as well as program/organizing/Advisory committee members on major world conferences on Neural Networks, including WCNN, ICNN, IJCNN, IEEE WCCI, ICONIP, NIPS, ICANN, IDEAL, and Intl. Conf. on Computational Finance, etc. Prof. Xu has also been serving as a member of engineering panel, Hong Kong RGC research committee (2001-06), a member of selection committee, Chinese NSFC/HK RGC Joint research scheme (2002-05, 08), external expert for Chinese NSFC information science panel (2004-06), and an nominator for the prestigious Kyoto prize (2004,2008,2012).

Prof. Xu is a Fellow of IEEE (2001- ), Fellow of IAPR (International Association for Pattern Recognition) (2002-), member of European Academy of Sciences (2002-). He has been listed in many international biographical publications. Prof Xu has received an 1995 International Neural Networks Society Leadership Award and several Chinese national prestigious academic awards, including 1993 Chinese National Nature Science Award, 1988 Chinese State Education Council FOK YING TUNG Award, and the second of the 10 winners of the 1988 BEIJING YOUNG SCIENTISTS PRIZE. Following the 2004 winner Prof Amari and the 2005 winner Prof. Fukushima,  Prof. Xu has received the 2006 APNNA Outstanding Achievement Award.

Address: Department of Computer Science and Engineering, The Chinese University of Hong Kong, Shatin, N.T. Hong Kong

Phone: +852- 39438423  Email: lxu[at] cse[dot]cuhk[dot]edu[dot]hk

Research Interests


Representative Publications (by years) (enter)

Representative Publications (by topics)

·      Overview Papers in Journals/Encyclopedia/Handbook (enter)

Bayesian Ying-Yang system and best harmony learning

Randomized Hough Transform

Rival Penalized Competitive Learning

Combining Classifiers and Learning Mixture-of-Experts

Independent Subspaces

RBF Functions and Subspace Based Functions

·      Bayesian Ying-Yang System and Harmony Learning Theory (enter)

·      Unsupervised Learning (enter)

Least MSE Reconstruction, PCA, MCA and Nonlinear Extensions

Competitive Learning and  Clustering analysis

Gaussian Mixture and EM Algorithm

Bayesian Approach

·      Independent component analysis and independent  factor Analysis (enter)

·      Supervised Learning (enter)

          Multiple Experts and Classifier Combination

Radial Basis Functions and Subspace Based Functions

Feed-forward Networks

·      Randomized Hough Transform and Object Detection (enter)

·      Financial Engineering and Signal Processing (enter)

·      Combinatorial Optimization (enter)



Two closely related series of efforts in past three years


For a promotion of Sino-foreign interchange on interdisciplinary areas of intelligence science, information science, and intelligent data engineering, and also in memory of thirty year anniversary of the Zhongguancun Golden Triangle ISIS Forum founded and propelled by two late senior academicians Prof. T. Chang of Tsinghua University and Prof. M. T. Cheng of Peking University, two founders of the Division of Information Technical Sciences, Chinese Academy of Sciences.

      See the 2nd paragraph of the editorial http://www.springerlink.com/content/k68031581527q255/fulltext.pdf.



A.    Another series One is a serial annual workshops on Intelligence Science and Intelligent Data Engineering (IScIDE) as a collective venue for introducing world frontier researchers to China and for introducing core researchers from Chinese major universities and research institutions to international communities.

             See IScIDE 10  http://goldentri.hit.edu.cn

                  IScIDE 11  http://www.iscide2011.org

                  IScIDE 12  http://iscide2012.seu.edu.cn/


B.    One is a series of efforts on four special issues on Frontiers of Electrical and Electronic Engineering in China, which has been renamed as Frontiers of Electrical and Electronic Engineering since 2012, for which I have being serving as the Guest Editor.

·      Volume 5, Number 3 / September 2010,  consisting of  nine invited survey articles written by 

S. Amari, E. Oja, J. Rissanen, A. Yuille, J.Schmidhuber, R. W. Yeung, Runsheng Chen, Yanda Li, and Lei Xu, on  Emerging themes on information theory and Bayesian Approach, especially on topics these authors pioneered.

See http://www.springerlink.com/content/1673-3460/5/3/

and the editorial http://www.springerlink.com/content/k68031581527q255/fulltext.pdf

All the authors are IEEE Fellows or/and Members of National Academy of Sciences.


·      Volume 6, Number 1 / March 2011, A special issue on Machine learning and intelligence science: Sino-foreign interchange workshop IScIDE2010 (A). consisting of  fourteen invited survey or research articles.

See http://www.springerlink.com/content/1673-3460/6/1/

and the editorial http://www.springerlink.com/content/428705867371np45/fulltext.pdf

The first half provides an insightful view for the core achievements by Chinese colleagues, with articles written by professors from major universities in mainland China.

The second half aims at a much wider scope of intelligence science (vision system, neural system, human behavior, and generic issues) for broadening the readers’ knowledge of this journal, written by professors from Hong Kong, Taipei, Japan, Europe, and USA.

·      Volume 7, Number 1 / March 2012, A special issue on Machine learning and intelligence science: IScIDE2010 (C). is a supplementary issue of Volume 6, Number 1 / March 2011. The two special issues may serve as a representative showing window for observing the achievements of professors in China. Actually, these authors come from more than 20 major universities in China (including the topmost nine mainland universities). Among them, eleven professors are recipients of Chinese NSF Distinguished Young Scholars, while others are also recipients of various levels of academic honors.

See http://www.springerlink.com/content/2095-2732/7/1/ 

and the editorial http://www.springerlink.com/content/tp187860405591k1/fulltext.pdf

·      Volume 6, Number 2 / June 2011, A special issue on Machine learning and intelligence science: Sino-foreign interchange workshop IScIDE2010 (B). consisting of nineteen invited research articles: the two-third comes from major universities in mainland China while the rest comes from universities in Hong Kong (China), England, and Finland. This special issue provides a typical perspective for international communities to observe the researches of Ph.D candidates in China.

See http://www.springerlink.com/content/1673-3460/6/2/

 and the editorial http://www.springerlink.com/content/ru317153x265p188/fulltext.pdf