Question about the "pack-sum" loss of XGBoost in Ansor

Questions
3

You can find some descriptions in section 5.2 of the ansor paper (https://arxiv.org/pdf/2006.06762.pdf).

I think the comments in the code (tvm/xgb_model.py at 81480287a891f07f3939b98cc57fad39e217f317 · apache/tvm · GitHub) also clearly describes the idea.