Title :
Characterizing the entropy function region via extreme rays
Author :
Qi Chen ; Yeung, Raymond W.
Author_Institution :
Dept. of Inf. Eng., Chinese Univ. of Hong Kong, Shatin, China
Abstract :
Contrary to the traditional method of information inequalities, in this paper, the entropy function region Γn* and its closure ̅Γn* are characterized via extreme rays of its outer bound polymatroidal region Γn. The characterization of Γ3* and the tightness of Γn as an outer bound on ̅Γn* are studied.
Keywords :
entropy; entropy function region; extreme rays; information inequalities; outer bound polymatroidal region; Channel coding; Cramer-Rao bounds; Entropy; Face; Random variables; Vectors;
Conference_Titel :
Information Theory Workshop (ITW), 2012 IEEE
Conference_Location :
Lausanne
Print_ISBN :
978-1-4673-0224-1
Electronic_ISBN :
978-1-4673-0222-7
DOI :
10.1109/ITW.2012.6404674