Post by poctor on Jun 27, 2023 22:14:10 GMT
Hi Prof Yang,
I'm interested in using COJO and trying to understand more about how the sample size difference is handled in COJO.
Specifically, I have questions about equation 14 of the COJO paper (https://www.nature.com/articles/ng.2213).
Q1: There is a "2" after "min(...)" term. I was wondering if it means to square the min Neff or means to represent the squared root or a typo (?).
Q2: My intuition about B_jk in eqn 14 is that B_jk is approximately min(n_j, n_k) * cov(X_j, X_k). If so, I don't know how to think about taking inverse of B (a bit counter-intuitive to me) since the Neff is different for different entries in B. Could you point me to any references that justifies this approach (if any)?
Thanks so much!
I'm interested in using COJO and trying to understand more about how the sample size difference is handled in COJO.
Specifically, I have questions about equation 14 of the COJO paper (https://www.nature.com/articles/ng.2213).
Q1: There is a "2" after "min(...)" term. I was wondering if it means to square the min Neff or means to represent the squared root or a typo (?).
Q2: My intuition about B_jk in eqn 14 is that B_jk is approximately min(n_j, n_k) * cov(X_j, X_k). If so, I don't know how to think about taking inverse of B (a bit counter-intuitive to me) since the Neff is different for different entries in B. Could you point me to any references that justifies this approach (if any)?
Thanks so much!