Probability of evidence

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martinois
Posts: 1
Joined: Mon Mar 21, 2011 10:17 am

Probability of evidence

Post by martinois »

Hello,

I am a GENIE user and probability of evidence in GeNIe is a very useful feature for my job but I haven't find any documentation about the calculation or the formula used to produce this result.

Could you please let me know how is calculate this probability of evidence?

Thanks in advance.

martinois
shooltz[BayesFusion]
Site Admin
Posts: 1417
Joined: Mon Nov 26, 2007 5:51 pm

Re: Probability of evidence

Post by shooltz[BayesFusion] »

GeNIe uses two algorithms to calculate P(e). One is jointree-based, potentially uses a lot of memory and is reasonable fast. The fallback is the chain rule algorithm, which is much slower but generally requires less memory.

For more info on chain rule, see http://en.wikipedia.org/wiki/Chain_rule_(probability)
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