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A matrix factorization approach to graph compression with partial information

delete2014-08-06
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F
Farshad Nourbakhsh
S
Samuel Rota Bulò *
M
Marcello Pelillo
DOI:10.1007/s13042-014-0286-5delete
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Abstract

Abstract

En 中文
We address the problem of encoding a graph of order n into a graph of order k < n in a way to minimize reconstruction error. This encoding is characterized in terms of a particular factorization of the adjacency matrix of the original graph. The factorization is determined as the solution of a discrete optimization problem, which is for convenience relaxed into a continuous, but equivalent, one. Our formulation does not require to have the full graph, but it can factorize the graph also in the presence of partial information. We propose a multiplicative update rule for the optimization task resembling the ones introduced for nonnegative matrix factorization, and convergence properties are proven. Experiments are conducted to assess the effectiveness of the proposed approach.
Keywords:
Matrix factorization
Graph compression
Stochastic blockmodel
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Journal

International Journal of Machine Learning and Cybernetics cover
International Journal of Machine Learning and Cybernetics
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2.7
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Fondazione Bruno Kessler
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Universita Ca Foscari Venezia
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