811, Ho Sing Hang (SHB)
My research interests and contributions have been in developing ideas, tools, and techniques to tackle families of combinatorial and non-convex optimization problems arising primarily in the information sciences.
For the last few years my research has primarily focused on determining extremizers of non-convex optimization problems arising from the study of fundamental open problems in network information theory. We developed a series of techniques, results, inequalities, and capacity regions all motivated by pursuing explicit computations of inner and outer bounds. This work has then led to various ideas relating to sub-additivity and tensorization of functionals, hypercontractive inequalities, etc, more in the realm of mathematics.
During my doctoral and post-doctoral period my research mainly dealt with theoretical issues connected to combinatorial optimization problems in both finite and large systems, primarily motivated by conjectures posed by statistical physicists. Apart from these problems, I have also had brief fancy for a bunch of isolated issues, mostly as a collaborator with some very interesting colleagues.A summary of my research is available here.
NOTE: I am always interested in working with good students, primarily those having strong mathematical reasoning skills.FORMER MEMBERS (including long-time visitors)
Multiuser information theory (Fall 2008, Fall 2011, Spring 2014, Fall 2016)
Signals and systems (Fall 2009, 2010, 2013)
Signals and systems - elite version (Fall 2010, 2011, 2012, 2013, 2014, Spring 2016, 2017)
Probability theory (measure theory based) (Spring 2010, 2013, Fall 2015, 2017)
Random Processes (Fall 2010, Fall 2016)
Basic circuit theory (Fall 2007)
Advanced Engineering Mathematics (Fall 2011, Fall 2012)
Since Fall 2007 I have been with the Information Engineering (IE) department at the Chinese University of Hong Kong. I have been involved with the Institute of Theoretical Computer Science and Communication (ITCSC) as an Assistant Director (Fall 2008-Fall 2017) and (currently) as the Director (Fall 2017 - ). From August 2014 I have been serving as the Programme Director of the inter-disciplinary undergraduate programme on Mathematics and Information Engineering (MIE).
From Summer 2005-Summer 2007 I spent two wonderful years in Redmond as a post-doc with the theory group at Microsoft Research.
I did my undergraduate studies at the Indian Institue of Technology (IIT ), Madras in electrical engineering graduating in 1999. Concurrently, I also completed the four year nurture programme in Mathematics at the Institute of Mathematical Sciences (IMSc ) under the auspices of the National Board of Higher Mathematics (NBHM).
I received a Masters (2002) and PhD (2005) in electrical engineering from Stanford University. The title of my dissertation was Proofs of the Parisi and Coppersmith-Sorkin conjectures in the random assignment problem (PDF), and Balaji Prabhakar was my advisor. Following my postdoctoral position at the theory group in Microsoft Research, I joined the IE department faculty in CUHK.