ShichengChen commented on a change in pull request #496: SINGA-474 Mean operator
URL: https://github.com/apache/incubator-singa/pull/496#discussion_r313862676
##########
File path: python/singa/autograd.py
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@@ -354,6 +354,41 @@ def backward(self, dy):
return singa.__mul__(dy, dx)
+def relu(x):
+ return ReLU()(x)[0]
+
+class Mean(Operation):
+ def __init__(self):
+ super(Mean, self).__init__()
+
+ def forward(self, *l):
+ """
+ Args:
+ l: a list of CTensor
+ element-wise mean operator
+ Returns:
+ a new CTensor
+ """
+ if training:
+ self.l = len(l)
+ assert(len(l)>0);
+ x = l[0]
+ for i in range(1,len(l)):
+ x = singa.__add__(x,l[i])
Review comment:
```
x=tensor and set tensor to zero
for i in range(len(l)):
x += l[i]
```
Is that what you mean?
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