blob: eb7492055a5330a1ef058f8f987a437dc548d756 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
|
local CSubTable, parent = torch.class('nn.CSubTable', 'nn.Module')
function CSubTable:__init()
parent.__init(self)
self.gradInput = {}
end
function CSubTable:updateOutput(input)
self.output:resizeAs(input[1]):copy(input[1])
self.output:add(-1,input[2])
return self.output
end
function CSubTable:updateGradInput(input, gradOutput)
self.gradInput[1] = self.gradInput[1] or input[1].new()
self.gradInput[2] = self.gradInput[2] or input[1].new()
self.gradInput[1]:resizeAs(input[1]):copy(gradOutput)
self.gradInput[2]:resizeAs(input[2]):copy(gradOutput):mul(-1)
for i=#input+1, #self.gradInput do
self.gradInput[i] = nil
end
return self.gradInput
end
|
