Improving robustness of log and exp, with proper special values o…
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…utput. Making sure that `exp` of `0` is `1` and `log` of `0` is `-inf`. Using a custom `logsumexp` in MNIST example until an additional scale propagation bug is solved. NOTE: additional robustness means MNIST training converges when initialization scale > 1.
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…utput.
Making sure that
expof0is1andlogof0is-inf. Using a customlogsumexpin MNIST example until an additional scale propagation bug is solved.NOTE: additional robustness means MNIST training converges when initialization scale > 1.