I'm wondering do I need to use ipw for xlearner, as the last step of xlearner has used ps value to re-weight sample?
Need help for this question, thanks!
And do I need to sampling for calculating ps value? When I reading the chapter 21, it seems that there's not need to do so, as the g(x) has the information of how unbalance it is of the train data?
I'm wondering do I need to use ipw for xlearner, as the last step of xlearner has used ps value to re-weight sample? Need help for this question, thanks!