orthonormal comments on Decision Theories: A Less Wrong Primer - Less Wrong
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Comments (172)
I was wondering when someone would ask that! It comes from the Wikipedia article on alpha-beta pruning in game theory, which is about strategizing (in a CDT fashion) in a game where your move and your opponent's move alternate. So it's not directly connected to the post, but I felt it imparts the right intuitive flavor to the notion of a decision theory.
It was clear to me that the tree represents a two-player zero sum game with alternative moves, where Square is trying to maximize some quantity and Circle minimize it. It wasn't clear from the picture what algorithm caused the "pruning" though.
Cool, thank you. It does impart the right flavor. I really like what Luke has started with putting pictures in main posts. Something about it makes it easier to read.