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|Abstract:||This paper studies a class of probabilistic models on graphs, where edge variables depend on incident node variables through a fixed probability kernel. The class includes planted constraint satisfaction problems (CSPs), as well as other structures motivated by coding theory and community detection problems. It is shown that under mild assumptions on the kernel and for sparse random graphs, the conditional entropy of the node variables given the edge variables concentrates. This implies in particular concentration results for the number of solutions in a broad class of planted CSPs, the existence of a threshold function for the disassortative stochastic block model, and the proof of a conjecture on parity check codes. It also establishes new connections among coding, clustering and satisfiability.|
|Citation:||Abbe, E, Montanari, A. (2015). Conditional random fields, planted constraint satisfaction, and entropy concentration. Theory of Computing, 11 (413 - 443. doi:10.4086/toc.2015.v011a017|
|Pages:||413 - 443|
|Type of Material:||Journal Article|
|Journal/Proceeding Title:||Theory of Computing|
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