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Subject [GitHub] [singa] chrishkchris commented on issue #572: hotfix: cpp softmax not impl
Date Tue, 14 Jan 2020 06:22:29 GMT
chrishkchris commented on issue #572: hotfix: cpp softmax not impl
URL: https://github.com/apache/singa/pull/572#issuecomment-574022539
 
 
   @dcslin 
   I used a simple test code to compare with pytorch when the input vector is of the size
[1, 5]. 
   The output is the same as pytorch. I suppose the difference maybe from cross_entropy.
   
   1. singa
   ubuntu@ip-172-31-26-47:~$ python3 softmaxtest.py
   x = [1. 3. 5. 7. 9.]
   dy = [1. 3. 5. 7. 9.]
   y = [[2.9007587e-04 2.1433870e-03 1.5837606e-02 1.1702495e-01 8.6470395e-01]]
   dx = [[-0.00222993 -0.01219034 -0.05839987 -0.19747007  0.27029037]]
   
   2. pytorch
   (pytorch_p36) ubuntu@ip-172-31-16-63:~/pytorch_ops_test$ python softmaxtest.py
   x = [[1. 3. 5. 7. 9.]]
   dy = [[1. 3. 5. 7. 9.]]
   y = [2.9007587e-04 2.1433870e-03 1.5837606e-02 1.1702495e-01 8.6470395e-01]
   dx = [-0.00222993 -0.01219034 -0.05839989 -0.19747011  0.27029008]
   

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