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local MarginCriterion, parent = torch.class('nn.MarginCriterion', 'nn.Criterion')
function MarginCriterion:__init(margin)
parent.__init(self)
self.sizeAverage = true
self.margin = margin or 1
end
function MarginCriterion:updateOutput(input, target)
self.output_tensor = self.output_tensor or input.new(1)
input.THNN.MarginCriterion_updateOutput(
input:cdata(),
target:cdata(),
self.output_tensor:cdata(),
self.sizeAverage,
self.margin
)
self.output = self.output_tensor[1]
return self.output
end
function MarginCriterion:updateGradInput(input, target)
input.THNN.MarginCriterion_updateGradInput(
input:cdata(),
target:cdata(),
self.gradInput:cdata(),
self.sizeAverage,
self.margin
)
return self.gradInput
end
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