> If the hills and valleys aren't too close together That’s a big “if”. | Hacker News

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		xigoi 4 months ago \| parent \| context \| favorite \| on: Derivatives, Gradients, Jacobians and Hessians > If the hills and valleys aren't too close together That’s a big “if”.

cubefox 4 months ago [–]

At least it will catch those valleys that are wider than the sampling resolution.

xigoi 4 months ago | [–]

Yeah. The problem is that the number of samples needed is exponential in the dimension, so in a 1000-dimensional space, you won’t even be able to subdivide it into 2×…×2.

cubefox 4 months ago | | [–]

Damn.

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