Our new paper “On the tradeoff region of secure exact-repair regenerating codes,” by S. Shao, T. Liu, C. Tian, and C. Shen, was published in IEEE Trans. Inform. Theory, Vol. 63, No. 11, pp. 7253-7266, Nov. 2017. We provide a clearer picture on the geometry of the tradeoff region of secure exact-repair regenerating codes. Past results appeared to suggest that the tradeoff region has only one corner point, however, we show that this is only true for more stringent security requirements, but not so for less stringent parameter settings.
Kai’s paper on symmetry reduction of information inequalities has been accepted by IEEE Trans. on communications. The problem considered in this work is the number of variables and constrains in the entropy LP, after the symmetry reduction alone. Polya’s theorem is used to help this counting task.
My research group moved to the ECE Department at Texas A&M University from the EECS Department at the University of Tennessee in Fall 2017. We are grateful to the staff and faculty members in both departments who helped us make this a smooth transition.
Our paper “A generic transformation for optimal repair bandwidth and rebuilding access in MDS codes” is one of the three winners of the 2017 IEEE Jack Keil Wolf ISIT Student Paper Award! (More details here) Jie completed the majority of the work reported in this paper while with UTK on a one-year CSC fellowship. We would like to thank the China Scholarship Council for the generous support which enabled this work. Congratulations, Jie!