Our data valuation experiments are based on the GitHub repository: https://github.com/opendataval/opendataval. 
For our data selection experiments, we utilized the code from: https://github.com/decile-team/cords.

We implemented our CHG Shapley algorithm based on these codes. 
For data valuation, see opendataval\opendataval\dataval\influence\gradshap.py
For data selection, see cords\cords\selectionstrategies\SL\shapisstrategy_10.py


We re-ran the experiments for all comparison methods. 
