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| Message Family Propagation Algorithm for Ising Graphical Model Based on Mean Field Computing Tree |
| CHEN Ya-Rui |
| School of Computer Science and Information Engineering,Tianjin University of Science and Technology,Tianjin 300222 |
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Abstract A message family propagation algorithm based on mean field computing tree for the Ising graphical model is proposed. Firstly the concepts of mean field computing tree and mean field pruned computing tree are defined to describe the iteration computation process of the mean field inference of the Ising graphical model. Next, the message family propagation algorithm based on the mean field computing trees is designed. The proposed algorithm propagates message families from bottom to top in the computing tree and computes the marginal distribution families of root random variables. Then, the marginal distribution bound theorem is proved, which shows that the marginal distribution families computed by the algorithm in the pruned computing tree contain the exact marginal distributions. Finally, the theoretical and experimental results show that the message family propagation algorithm is valid and the marginal distribution bounds are tight.
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Received: 29 July 2011
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2012, Vol. 25 
