Combining many columns for testing interactions in the predictive modeling platforms
I have a dataset in which I have many predictors, and I want to do second order factorials of them all (i.e., all possible interactions). Normally, if I use "Fit model," I simply select all predictors, set the factorial to 2, then select "factorial to degree." However, for other platforms, this factorial/interaction feature isn't supported. Therefore, I need to combine 14 columns, i.e. 14^2 = almo...