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Subject: Re: Questions about Tridgell/Baxter's paper on TDLeaf

Author: James Swafford

Date: 04:06:41 10/21/01

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On October 21, 2001 at 02:37:09, Rémi Coulom wrote:

>On October 21, 2001 at 00:11:23, James Swafford wrote:
>
>If your evaluation function is, say, f(w_1, w_2, ..., w_n), then the partial
>derivative of f with respect to weight w_i is the limit of
>(f(w_1, ..., w_i + epsilon, ..., wn) - f(w_1, ..., w_i, ..., w_n)) / epsilon
>when epsilon goes to zero. In practice, you can estimate this value by measuring
>the ratio above with a very small value of epsilon.


That is starting to make sense, but I'll have to sit down and think
about it later today.  What is a reasonable value for epsilon?



>
>>
>>Forgive me if I'm being horribly unclear or I've botched the
>>algorithm; I'm trying to make sense of the thing.
>>
>>--
>>James



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