galbraun
galbraun
/ xgboost_leaf_paths_extractor.py
Created
August 9, 2020 13:06
Functions to extract for a xgboost forest for each tree and each leaf - the middle nodes that create the path to reach it.
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| def _root_to_leaf_route(df, stack, routes): | |
| current_node = df.loc[df.Node == stack[-1]] | |
| if current_node.Feature.values[0] == 'Leaf': | |
| routes[current_node.Node.values[0]] = list(stack) | |
| stack.pop() | |
| return | |
| stack.append(int(current_node.Yes.values[0].split('-')[1])) | |
| _root_to_leaf_route(df, stack, routes) | |
| stack.append(int(current_node.No.values[0].split('-')[1])) | |
| _root_to_leaf_route(df, stack, routes) |