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square / pysurvival

Open source package for Survival Analysis modeling
https://www.pysurvival.io/
Apache License 2.0
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Gradient always explodes when modelling LogNormal AFT model #23

Open jgrinaveckis opened 4 years ago

jgrinaveckis commented 4 years ago

Hello,

For quite some time I can't model LogNormal AFT model, as no matter what learning rate, optimizer I select, gradient always explodes... Is there could be anything to this method specifically here?

Thanks for answer in advance!