报告人：Edwin Hancock

讲座题目：Network  Entropy,  Complex Network Analysis and Machine Learning

讲座时间：2016年5月23日 15:00-16:00

讲座地点：软件学院办公楼A306会议室

讲座简介：The talk provides an overview  of recent work on the analysis of network entropy, which leads to new methods for network algorithms in both the  machine learning and complex network domains. We commence by presenting simple approximations   for the Von Neumann entropy of both directed and undirected networks in terms of edge degree statistics. In the machine learning domain, this leads to new description length methods for learning generative models of network-structure, and new ways of computing information theoretic graph kernels. In the complex network domain, it provides a means of analyzing the time evolution of networks, and making links with the thermodynamics of network evolution. We take this analysis one-step further by showing how the concept of a partition function from statistical mechanics can be extended to networks, and how the Bose-Einstein or Fermi-Dirac spin-statistics of particles in thermal equilibrium with a network immersed in a heat bath lead to new forms for the entropy, capable of capturing non-classical aspects of network structure. Experiments are provided on network time series elicited from financial markets and networks representing brain activation patterns in fMRI images of Alzheimer's patients.

讲座人简介：Edwin Hancock教授是世界计算机视觉与模式识别领域的著名专家之一，是英国皇家学会Wolfson研究成就奖的获得者。Hancock教授同时兼任英国约 克大学学术委员会委员，约克大学计算机系学术委员会主席，约克大学计算机系机器视觉与模式识别研究组负责人。Hancock教授亦为或曾为英国官方（如 REF）或国际多个学术组织的评审专家与负责人。

Career

Posts Held:

1981-1991 - Research in High Energy Physics and Pattern Recognition, Rutherford-Appleton Laboratory,
1984-1991 - Tutor Open University. 
1988-1991 - Part Time Lecturer Department of Electrical Engineering Surrey University. 
1991-1997 - Lecturer, University of York.
1997-1998 - Senior Lecturer, University of York. 
1998 - Reader, University of York.
1998 to present - Professor, University of York.

Visiting Appointments:

Honorary Professor Anhui University (2004-present).
Visiting researcher NICTA/ANU (2006-present).
Visiting Fellow Isaac Newton Institute (2008).

External Examining:
External examiner University College London (1999-2003), Edinburgh University (2002-2004) and University of Warwick (2007-2009).

Editorial Appointments:

Editor-in-Chief IET Computer Vision (2006-2011).
Associate Editor IEEE TPAMI (1999-2005), 
Pattern Recognition (Associate Editor, 1991-2010, Area Editor 2010-present).
CVIU (Area Editor, 2008-present), 
Image and Vision Computing (Associate Editor, 2009-2011).
Associate Editor Journal of Complex Networks (OUP)

Professional Memberships:

Fellow IAPR (2000), IET (2007), BCS (2008) and Institute of Physics (2008).
Royal Society Wolfson Research Merit Award Holder (2009--2014).
Senior Member IEEE (2010).

Membership External Bodies:

IAPR Governing Board (2006-present)
Chair IAPR Constitution and Bylaws Committee (2008-2012).
Member UKCRC
Member Royal Society Newton International Fellowships Panel (2013-2015, 2016-2018).
Member REF Computer Science and Information Technology Panel.
Chair Computer Science Evaluation Commission, Czech Academy of Science,
Member IEEE Computer Society Fellow Evaluation Panel