Comment by sfpotter | Hacker News Reader

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Comment by sfpotter | Hacker News Reader

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It isn't equivalent to it. See my other comment.

Dude.

Cos(x, y) = x . y / ||x|| * ||y||

If x and y are normalized:

Cos(x, y) = x . y

x*y/|x||y| is a very different function from x*y

It also isn't a distance...

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