I have three evidences: B1, B2, B3 (this means they are already known)
And I want to predict A given these evidences, so according to the bayes theorem, it should be:
P(A|B) = P(B1 | A) * P(B2 | A) * P(B3 | A) * P(A) / P(B)
Is this correct?
If yes, my question is that is the denominator P(B) in this formula equal to P(B1) * P(B2) * P(B3)? My teacher already told me this is wrong, but I just don't understand why.
Could experts please explain why as simple as possible because I am very new to probability and statistics.
Thank you very much for your help.
2007-09-26
23:17:25
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