To celebrate the 17th Anniversary of Macau University of Science and Technology, the Faculty of Information Technology held an academic seminar at Block E, Room 302 on April 3rd, 2017. Prof.Zhang Haiwas the invited speakers. Prof Zhang’s talk was on “Nonconvex Regularization Approaches and Their Applications”.Around 30 students and faculty members attended the seminar, including the Dean of the Faculty of Information Technology Prof.Zhang Du, the Assistant Dean Prof. Liang Yongand the Assistant Dean Prof. Li JianQing.
The nonconvex regularization approaches are effective in dealing with the high dimensional and massive data. In the seminar, Prof. Zhang summarized several results obtained by their team in this line of research. Firstly, he showed the essential ability of sparse signal reconstruction of different regularization methods by using phase transition. Secondly, he proposed the new iterative thresholding algorithms for different nonconvex regularization methods based on Belief Propagation in graphical model. At last, he discussed the structure learning of network data with the nonconvex regularization approaches.
Prof.Zhang Hai’s Biography:
Zhang Hai, Professor and doctoral supervisor. He currently is the Dean of the faculty of financial mathematics and statistics of the School of mathematics of Northwestern University. He received his PHD degree in applied mathematics from Xi'an JiaoTong University. He was also a postdoctoral fellow of the Institute of Mathematics and System Sciences, Chinese Academy of Sciences. He also was a visiting scholar of the faculty of statistics of the University of California, Berkeley. His current research fields include big data, machine learning, statistical analysis of high-dimensional data, complex systems and social networks. As a principal investigator, he has completed three projects of the National Natural Science Fund of China, one international cooperation project of the Ministry of Science and Technology, China. He also took part in one “973 project”. He has published more than 10 research papers in the "Annals of Statistics", "Chinese science (information science)," "Chinese science (mathematics)," "Journal of Hazardous Materials" and "Journal of Mathematics".
Prof Zhang Hai in the seminar