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Bug-fixed for _compute_hessian in Pytorch NAS Darts #3058
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ultmaster
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In Issues#3044，
I report a bug about Pytorch darts in train.py, which is located at
”nni\algorithms\nas\pytorch\darts\trainer.py“
In the darts trainer.py, which function is _compute_hessian, shows :
"hessian = (dalpha { L_trn(w+, alpha) } - dalpha { L_trn(w-, alpha) }) / (2*eps)"
but the below is written by this :
hessian = [(p - n) / 2. * eps for p, n in zip(dalpha_pos, dalpha_neg)]
I change it to
hessian = [(p - n) / (2. * eps) for p, n in zip(dalpha_pos, dalpha_neg)]
Good luck!