• l.cristian

Distilling a Random Forest to a single DecisionTree

On HackerNews there was a topic discussed at some point about ways to distill knowledge from a complex (almost black box) large tree ensemble (a RandomForest with lots of sub-trees was used as an example).

You would like to do this for multiple reasons, but one of them is model explainability, so a way to understand how that complex model behaves so you can draw conclusions and improve it (or guard against its failures).

One comment really caught my eye:

An alternative is to re-label data with the ensemble’s outputs and then learn a decision tree over that. (source)

This post is my attempt of testing this strategy out.

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