emrea
Reputation
Top tag
Next privilege 500 Rep.
Access review queues
 May 25 awarded Yearling May 14 awarded Caucus Oct 9 comment Interpretation of $E[X \mid Y, Z]$ It might be misleading to say that $g(Y,Z)$ always conditions on both $Y$ and $Z$. No, it doesn't have to. The correct statement is this: if you condition it on both $Y$ and $Z$, it becomes a constant; if you condition it on $Y$ it becomes a function of r.v. $Z$; if you condition it on $Z$ it becomes a function of r.v. $Y$. Oct 8 comment Interpretation of $E[X \mid Y, Z]$ $E[X|Y,Z]$ will be a constant only when both $Y$ and $Z$ are instantiated/observed. Oct 8 comment Interpretation of $E[X \mid Y, Z]$ Why should $E[X|Y=y,Z]$ be a constant? It is a function of the r.v. $Z$. Sep 25 comment Alternative strategies for Optimization Why don't you try numerical optimization software, e.g. fmincon in MATLAB? Sep 22 comment Numerical optimization with nonlinear equality constraints The fact that it is easy to solve for $x_n$ given all other variables reminds me of coordinate descent method. You can write the full cost function (including the constraint) and then apply coordinate descent. Doesn't it work? Sep 19 revised How to avoid numerical overflow while computing a sum of products? added 17 characters in body Sep 19 revised How to avoid numerical overflow while computing a sum of products? edited tags Sep 19 asked How to avoid numerical overflow while computing a sum of products? Sep 17 comment How to sample from a product-of-sums distribution? Thanks for your comment, I noticed and corrected an error. The product should be from 1 to M. Sep 17 revised How to sample from a product-of-sums distribution? edited body Sep 11 asked How to sample from a product-of-sums distribution? Aug 31 answered How to formulate the probability of being correct? Aug 31 comment How to formulate the probability of being correct? @SeyhmusGüngören, yes, L and F are independent (but only when X is not observed). So what effect does it have? I understand that $\delta$ is designed previously but no $X$ is observed yet, how do you compute the probability of being correct? Aug 31 comment How to formulate the probability of being correct? @alancalvitti I've read it from Wikipedia now and no ring belled. Could you please explain? Aug 30 asked How to formulate the probability of being correct? Aug 21 answered Statistical Significance Dice Probability Aug 20 comment Rating system incorporating experience If you have example ground-truth rankings, you can fit this model to those and obtain the best $\alpha$. Otherwise, I guess it has to be subjective. Aug 17 answered Rating system incorporating experience