locked
Confusion in EP energy function RRS feed

  • Question

  • Hi, 

    I am asking this, since many people are EP experts.  I have a confusion on EP energy function. Would you please one of you answer this? 

    http://stats.stackexchange.com/questions/78167/confusion-in-expectation-propagation-energy-function

    Even very small hints is highly appreciated. 

    Thanks

    PS. Your editor doesn't have equations, so I wrote at the Cross-Validated. 

    Saturday, November 30, 2013 9:16 PM

All replies

  • Thanks for your help. I clarified my questions more. Would you please take another look? 

    Thanks
    Monday, December 2, 2013 7:10 AM
  • Thank you for your answer. I numbered the equations in the question at :
    http://stats.stackexchange.com/questions/78167/confusion-in-expectation-propagation-energy-function
    Here are my problems now:

    (1) I didn't mean the connection between primal and dual energy function. What I want is the way PRIMAL is derived. (Equation b, in the link) is the primal, and we know evidence is (Equation a, in the link), which is exactly the same as (Equation c, in the link). Now the question is how (Equation b, in the link) is related to (Equation c, in the link)?

    (2) Oh, I misunderstood. Then what equation do you solve to find $s_a$ ? In other words, what do you exactly mean by "the scale factor which minimizes the KL-divergence"? 

    Thursday, December 5, 2013 12:09 AM