Introduction: Community Manager

[jonah]

@martinmodrak

avehtari:

I’ve learned years ago that “hope this helps” definitely has a negative connotation

This is the first time I’ve heard about this

I hadn’t heard that either. I often say “hope that helps!” when I respond but I mean it sincerely! In fact I just used that here:

Is the kfold method in brms/rstanarm similar to kfold validation in machine learning?

When using the kfold method in brms or rstanarm then if K=5 it splits the data into 5 sets and uses each of them as the test data once. That is, it will fit the model 5 times, each time leaving out one of the 5 sets and then evaluating how well it can predict the left out set using the model fit to the rest of the data. Hope that helps!