3min chapter

The Gradient: Perspectives on AI cover image

Stuart Russell: The Foundations of Artificial Intelligence

The Gradient: Perspectives on AI

CHAPTER

Alphabeta Pruning: Which Leaf Node Should I Expand?

Instead of a complicated algorithm, like alphabeta pruning, I just said, okay, we should just expand the leaf node such that we expect our decision quality to improve the most. And then you can sort of follow that back to the root and say, well, even if we change this leaf node by, you know, plus or minus 50, because there's an alternative root you could take from the root of the alternative path, it's actually not going to change your mind,. Right? So if there's no possibility that you're going tochange your decision at the root, then there's no value to doing this computation. You get a typically a much deeper search tree along certain

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