There is a mistake in the DARTS code

[xiangzhluo]

Hi,

I just find there is a mistake in your released DARTS code.

In architect.py, the hessian is computed as follows:
hessian = [(p-n) / 2.*eps for p, n in zip(dalpha_pos, dalpha_neg)]

However, referring to paper and the official release code, it should be computed as follows:
hessian = [(p-n) / (2.*eps) for p, n in zip(dalpha_pos, dalpha_neg)]

But it seems this mistake does not hurt the performance. LOL

[antoyang]

Hi, thanks for noticing. I corrected it. You may as well warn the original repo of DARTS that I refer to in the Readme though. I am not too surprised that the performance is not much affected :)