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Entropy 2012, 14(3), 456-479; doi:10.3390/e14030456

The Mathematical Structure of Information Bottleneck Methods

1,* , 2
Received: 2 December 2011 / Revised: 7 February 2012 / Accepted: 24 February 2012 / Published: 1 March 2012
(This article belongs to the Special Issue The Information Bottleneck Method)
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Information Bottleneck-based methods use mutual information as a distortion function in order to extract relevant details about the structure of a complex system by compression. One of the approaches used to generate optimal compressed representations is by annealing a parameter. In this manuscript we present a common framework for the study of annealing in information distortion problems. We identify features that should be common to any annealing optimization problem. The main mathematical tools that we use come from the analysis of dynamical systems in the presence of symmetry (equivariant bifurcation theory). Through the compression problem, we make connections to the world of combinatorial optimization and pattern recognition. The two approaches use very different vocabularies and consider different problems to be “interesting”. We provide an initial link, through the Normalized Cut Problem, where the two disciplines can exchange tools and ideas.
Keywords: information distortion; spontaneous symmetry breaking; bifurcations; phase transition information distortion; spontaneous symmetry breaking; bifurcations; phase transition
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Gedeon, T.; Parker, A.E.; Dimitrov, A.G. The Mathematical Structure of Information Bottleneck Methods. Entropy 2012, 14, 456-479.

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