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Peter_de_Blanc comments on Bayesian Utility: Representing Preference by Probability Measures - Less Wrong

10 Post author: Vladimir_Nesov 27 July 2009 02:28PM

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Comment author: Peter_de_Blanc 28 July 2009 04:54:37PM 0 points [-]

How do you calculate P(A)?

Comment author: Vladimir_Nesov 28 July 2009 08:52:04PM 0 points [-]

Trick question? P(A) is just a probability of some event, so depending on the problem it could be calculated in any of the possible ways. "A" can for example correspond to a value of some random variable in a (dynamic) graphical model, taking observations into account, so that its probability value is obtained from belief propagation.