locked
Why convert logodd evidence through Math.Exp RRS feed

  • Question

  • Hi, Infer.net people,

           From the example in the website, the probability of satisfying the constraint is computed by Math.Exp(logEvidence).

    The result seems a oddRatio to me rather than a probability.

           http://research.microsoft.com/en-us/um/cambridge/projects/infernet/docs/Computing%20model%20evidence%20for%20model%20selection.aspx

    Anyone can help me to understand this?

    Thank you very much.

    Tuesday, October 21, 2014 3:12 AM

Answers

  • It is the odds ratio against an empty model, which is the same as the probability.
    • Marked as answer by Zhizhuo Friday, October 24, 2014 9:10 PM
    Tuesday, October 21, 2014 10:03 AM
    Owner

All replies

  • It is the odds ratio against an empty model, which is the same as the probability.
    • Marked as answer by Zhizhuo Friday, October 24, 2014 9:10 PM
    Tuesday, October 21, 2014 10:03 AM
    Owner
  • Thank you.  Hence, Empty model means the constraint is always satisfied under Evidence=0.
    Tuesday, October 21, 2014 7:34 PM