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Título: | DeciMaxSum: using decimation to improve Max-Sum on Cyclic DCOPs |
Autor: | Cerquides, Jesús CSIC ORCID ; Emonet, Rémi; Picard, Gauthier; Rodríguez-Aguilar, Juan Antonio CSIC ORCID CVN | Fecha de publicación: | 2018 | Editor: | IOS Press | Citación: | Frontiers in Artificial Intelligence and Applications: 27-36 (2018) | Resumen: | When solving large distributed constraint optimization problems (DCOP), belief-propagation and incomplete inference algorithms are candidates of choice. However, these methods perform poorly when the factor graph is very loopy (i.e. cyclic) because of non-convergence and high communication costs. As to improving performances of the Max-Sum inference algorithm when solving loopy constraint optimization problems, we propose to take inspiration from the belief-propagation-guided decimation used to solve sparse random graphs (k-satisfiability). We introduce the DECIMAXSUM method, parameterized in terms of policies to decide when to trigger decimation, which variables to decimate, and which values to assign to decimated variables. Our empirical analysis on a classical BP benchmark indicates that some of these combinations of policies outperform state-of-the-art competitors. | Versión del editor: | http://dx.doi.org/10.3233/978-1-61499-918-8-27 | URI: | http://hdl.handle.net/10261/198018 | DOI: | 10.3233/978-1-61499-918-8-27 | ISBN: | 978-1-61499-917-1 |
Aparece en las colecciones: | (IIIA) Libros y partes de libros |
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