Fault Identification via Non-parametric Belief Propagation

Details Fault Identification via Non-parametric Belief Propagation Fault Identification via Non-parametric Belief Propagation

2009-08-14

arxiv.org/abs/0908.2005v8

Computer Science

Information Theory

In IEEE Tran. On Signal Processing

Scientific paper

We consider the problem of identifying a pattern of faults from a set of noisy linear measurements. Unfortunately, maximum a posteriori probability estimation of the fault pattern is computationally intractable. To solve the fault identification problem, we propose a non-parametric belief propagation approach. We show empirically that our belief propagation solver is more accurate than recent state-of-the-art algorithms including interior point methods and semidefinite programming. Our superior performance is explained by the fact that we take into account both the binary nature of the individual faults and the sparsity of the fault pattern arising from their rarity.

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