"shap" as a dependency?

Hi! Fasttreeshap is great example of real applied computer science research, thank you! It is much faster and configurable than the original shappackage.
We were wondering if the referenced original shap package could be removed from Fasttreeshap, as it looks like it's only used for non-essential code, and as shap is a huge library, it could speed up the installation process and could make Fastreeshap's installation a lot more lightweight.

Thank you for considering it!

まず依存関係の宣言箇所を特定し、リポジトリ内で shap パッケージのインポートまたは使用箇所を検索します。それらの使用が必須ではないか確認し、既存のテストを実行して、依存関係なしでインストールできることを検証します。パッケージが不要になり、プロジェクトが引き続き正常に動作すれば完了です。