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Dr Wei Liu


I'm a lecturer at the Advanced Analytics Institute, the University of Technology, Sydney. I'm also a visiting researcher in the Machine Learning Research Group at NICTA.
Before joining UTS, I was a Research Fellow at the University of Melbourne, and then a Machine Learning Researcher at NICTA working with the transportation industry. I obtained my PhD degree from the University of Sydney. 
I have been publishing papers in the following research areas (which are my major research interests): tensor factorization, graph mining, causal inference, game theory, data imbalance handling, spatio-temporal data mining, discrimination-free learning, and anomaly detection.
Image of Wei Liu
Lecturer, A/DRsch Advanced Analytics Institute
Member, Institute of Electrical and Electronics Engineers
Member, Association for Computing Machinery
+61 2 9514 3782

Research Interests

My research interests are in the general areas of Data Mining and Machine Learning. I have been publishing papers in the following research topics: tensor factorization, graph mining, game theory, data imbalance handling, spatio-temporal data mining,  discrimination-free learning, anomaly detection, and causal inference.

Can supervise: Yes

Registered at Category Level 1.

Data Mining and Knowledge Discovery; Data Analytics;


Liu, W. & Williams, M. 2008, 'Strategies for Business in Virtual Worlds: Case Studies in Second Life', Pacific Asia Conference on Information Systems, PACIS 2008, City University of Hong Kong Press, China, pp. 888-900.
In this paper, we use qualitative and quantitative methodologies to analyse and understand a range of business strategies in Second Life.
Xu, K., Chen, X., Liu, W. & Williams, M. 2006, 'Legged Robot Gait Locus Generation Based on Genetic Algorithms', International Symposium on Practical Cognitive Agents and Robots (PCAR 2006) - Proceedings, ACM digital library, Australia, pp. 51-62.
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Achieving an effective gait locus for legged robots is a challenging task. It is often done manually in a laborious way due to the lack of research in automatic gait locus planning. Bearing this problem in mind, this article presents a gait locus planning method using inverse kinematics while incorporating genetic algorithms. Using quadruped robots as a platform for evaluation, this method is shown to generate a good gait locus for legged robots.

Journal articles

Liu, W., Sukhorukov, A., Miroshnichenko, A., Poulton, C., Xu, Z., Neshev, D. & Kivshar, Y. 2010, 'Complete spectral gap in coupled dielectric waveguides embedded into metal', Appl. Phys. Lett., vol. 97, p. 021106.
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We study a plasmonic coupler involving backward (TM_01) and forward (HE_11) modes of dielectric waveguides embedded into infinite metal. The simultaneously achievable contradirectional energy flows and codirectional wavevectors in different channels lead to a spectral gap, despite the absence of periodic structures along the waveguide. We demonstrate that a complete spectral gap can be achieved in a symmetric structure composed of four coupled waveguides.
Chen, X., Liu, W. & Williams, M. 2009, 'Introduction: Practical Cognitive Agnets and Robots', Autonomous Agents And Multi-Agent Systems, vol. 19, no. 3, pp. 245-247.
Liu, W. & Williams, M. 2002, 'Trustworthiness Of Information Sources And Information Pedigrees', Lecture Notes In Computer Science vol 2333 - Intelligent Agents Viii: Agent Theories, Architectures, And Languages, vol. 2333, pp. 290-306.
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To survive, and indeed thrive, in an open heterogenous information sharing environment, an agent's ability to evaluate the trustworthiness of other agents becomes crucial. In this paper, we investigate a procedure for evaluating an agent's trustworthines