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 めっちゃ分かりやすかった。正則化。

無差別曲線と予算制約が接する点みたいな。

It was very educational. It's about regularization. I can relate to this notion with a point where a budget line is tangent to an indifference curve.

https://toeming.hatenablog.com/entry/2020/04/03/000925