2 votes

MCMC seems very sensible to the evidence

Since $$A(\theta|\theta') = \min\left(\frac{\tilde{P}(\theta|D)}{\tilde{P}(\theta'|D)}, 1\right) = \min\left(\frac{{P}(D|\theta)P(\theta)}{P(D|\theta')P(\theta')}, 1\right)$$ the evidence $P(D)$ does ...
Xi'an's user avatar
  • 104k
1 vote

How should you determine the probability returned by a flat uniform prior function

There is a more formal answer to your question, but I won't give it here. In broader terms, though: What I don't understand is why they would take the log of 1 and not the log of 1/5.5, which is the ...
Eoin's user avatar
  • 8,867

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