RuntimeWarning: divide by zero encountered in divide
I encountered this problem when implementing Gibbs sampling of a topic model using python. I need to get the quotient of two arrays in a for loop:
result = (self.nas[a, :] + self.gamma)/(self.na[a] + self.Sgama)
Both nas and na are numpy arrays with none negative elements. gamma and Sgama are constants, in which gamma = 0.1, Sgama = 2. So both dividend and divisor can not be zero.
I cannot figure out why PyCharm keeps giving this warning all the times. Thank you for your help!