linear with no bias

gistfile1.txt

local Linear, parent = torch.class('nn.NoBiasLinear', 'nn.Linear')

function Linear:__init(inputSize, outputSize)
   parent.__init(self, inputSize, outputSize)

   self.bias:fill(0)
end


function Linear:accGradParameters(input, gradOutput, scale)
   scale = scale or 1
   if input:dim() == 1 then
      self.gradWeight:addr(scale, gradOutput, input)
   elseif input:dim() == 2 then
      local nframe = input:size(1)
      local nunit = self.bias:size(1)
      
      if nunit == 1 then
         -- Special case to fix output size of 1 bug:
         self.gradWeight:select(1,1):addmv(scale, input:t(), gradOutput:select(2,1))
      else
         self.gradWeight:addmm(scale, gradOutput:t(), input)
      end
   end
end