k-1 weight decay #19
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k-1 weight decay #19
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| for _ in range(max_iters): | ||
| grad = (np.log(k) - digamma(k) - s) / (1.0 / k - polygamma(1, k) + 1e-8) | ||
| grad += k**2 * wd | ||
| grad += (k - 1) ** 2 * wd |
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exponential bistro for the win!!!!
scrambledpie
approved these changes
Aug 21, 2025
| # Apply custom weight decay centered at 1 | ||
| if wd > 0: | ||
| with pt.no_grad(): | ||
| theta.data -= wd * (theta.data - 1) |
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theta here can be more general than k-values in a gamma distro. (this code isn't being used in experiments atm so not an issue for the deadline)
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we want the wd to be centered around 1 (exp) not 0