Evidence Absorption and Propagation through Evidence Reversals

📝 Original Info

• Title: Evidence Absorption and Propagation through Evidence Reversals
• ArXiv ID: 1304.1525
• Date: 2013-04-08
• Authors: Researchers from original ArXiv paper

📝 Abstract

The arc reversal/node reduction approach to probabilistic inference is extended to include the case of instantiated evidence by an operation called "evidence reversal." This not only provides a technique for computing posterior joint distributions on general belief networks, but also provides insight into the methods of Pearl [1986b] and Lauritzen and Spiegelhalter [1988]. Although it is well understood that the latter two algorithms are closely related, in fact all three algorithms are identical whenever the belief network is a forest.

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Deep Dive into Evidence Absorption and Propagation through Evidence Reversals.

The arc reversal/node reduction approach to probabilistic inference is extended to include the case of instantiated evidence by an operation called “evidence reversal.” This not only provides a technique for computing posterior joint distributions on general belief networks, but also provides insight into the methods of Pearl [1986b] and Lauritzen and Spiegelhalter [1988]. Although it is well understood that the latter two algorithms are closely related, in fact all three algorithms are identical whenever the belief network is a forest.

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Reference