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Bug fix. Change softmax dim. #271

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@yannqi yannqi commented Nov 17, 2022

In line 64, Change the softmax dim from 2 to 1.
According to this line,
probs = F.softmax(self.scale * probs, dim=2)# batch x k x hw

In this code, the input dimension is [batch_size, num_class, fh*fw]. And the softmax dimension is 2, which means that the summation of the dimensions of the feature map (fh*fw) is one.

However, in my opinion, I thinke the softmax dimension should be 1 to make the summation of the dimension of the num_class (num_class) is one.

The corrected code is as follows:
probs = F.softmax(self.scale * probs, dim=1)# batch x num_class x hw

By the way, I had report this to issue, but without answer.
And I have a simple comparative experimental verification, the results show that dim1 can convergence faster, and get a better mIOU.

In line 64, Change the softmax dim from 2 to 1.  
According to this line,
`probs = F.softmax(self.scale * probs, dim=2)# batch x k x hw`
In this code, the input dimension is [batch_size, num_class, fh\*fw].
And the softmax dimension is 2, which means that the summation of the dimensions of the feature map (fh\*fw) is one.

However, in my opinion, I thinke the softmax dimension should be 1 to make the summation of the dimension of the num_class (num_class) is one.

The corrected code is as follows:
`probs = F.softmax(self.scale * probs, dim=1)# batch x num_class x hw`
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