Basic Information

System Intelligence Laboratory
Senior Associate Professor
Web site


Courses - Undergraduate
Computer ArchitectureOperating Systems
Courses - Graduate
Nature Inspired DesignPattern Recognition and Machine Learning


Computational intelligence
Educational Background, Biography
1993: Ph.D., Department of Computer Science, Wuhan University, China 1999: Ph.D., School of Computer Science, University College, the University of New South Wales, Australia 1994 to 1996: Lecturer, Wuhan University, China 1999 to 2000: Research Fellow, AIST Tsukuba, Japan 2000 to present: Senior Associate Professor, the University of Aizu
Current Research Theme
Neural network ensemble learning
Key Topic
Optimization and statistical learning
Affiliated Academic Society


Films and novels
School days' Dream
To be a mathematician
Current Dream
Make a machine intelligent like human
Over the Top
Favorite Books
"Romance of the Three Kingdoms"
Messages for Students
To get active and involved in class.
Publications other than one's areas of specialization

Dissertation and Published Works

1. Y. Liu, Q. Zhao, and Y. Pei, From Low Negative Correlation Learning to High Negative Correlation Learning, the Proceedings of the 2014 International Joint Conference on Neural Networks (IJCNN 2014), IEEE Press, referee reading, 171?174(2014).
2. Y. Liu, Q. Zhao, and N. Yen, Transition Learning between Balanced Ensemble Learning and Negative Correlation Learning, the Proceedings of the 2013 IEEE International Conference on Systems, Man, and Cybernetics (IEEE SMC 2013), IEEE Press, 2647-2650(2013).
3. Y. Liu, Balanced Ensemble Learning between Known and Unknown Data, Communications in Computer and Information Science, Springer, Vol.316,381-388( 2012).
4. Y. Liu, New Discoveries in Fast Evolutionary Programming, International Journal of Innovative Computing, Information and Control, Vol.7, No.4, 2881-2896(2011).
5. Y. Liu, X. Yao, and T. Higuchi, Evolutionary ensembles with negative correlation learning, IEEE Transactions on Evolutionary Computation, 4(4):380-387, 2000.
6. Y. Liu and X. Yao, Simultaneous training of negatively correlated neural networks in an ensemble, IEEE Transactions on Systems, Man and Cybernetics, Part B: Cybernetics, 29B(6), pp.716-725, 1999
7. Y. Liu and X. Yao, Ensemble learning via negative correlation, Neural Networks, 12, pp.1399-1404, 1999.