zhou-frank
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zhou-frank
I didn’t encounter this situation
your derivative is wrong when i==j it should be `self.alpha *(1 - x) ** (self.gamma - 1) * (self.gamma * np.log(x) - 1 / (x) + 1)` https://www.wolframalpha.com/input/?i=-(1-x)%5Ek*log(x)
Oh,yes. your result is correct