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L1Cost.lua
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L1Cost.lua
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local THNN = require 'nn.THNN'
local L1Cost, parent = torch.class('nn.L1Cost','nn.Criterion')
function L1Cost:__init()
parent.__init(self)
end
function L1Cost:updateOutput(input)
self.output_tensor = self.output_tensor or input.new(1)
input.THNN.L1Cost_updateOutput(
input:cdata(),
self.output_tensor:cdata()
)
self.output = self.output_tensor[1]
return self.output
end
function L1Cost:updateGradInput(input)
input.THNN.L1Cost_updateGradInput(
input:cdata(),
THNN.NULL,
self.gradInput:cdata()
)
return self.gradInput
end
function L1Cost:clearState()
if self.output_tensor then self.output_tensor:set() end
return parent.clearState(self)
end