1 files changed, 43 insertions, 0 deletions
diff --git a/contrib/lua-torch/nn/SpatialLPPooling.lua b/contrib/lua-torch/nn/SpatialLPPooling.lua
new file mode 100644
index 000000000..49a8493cf
--- /dev/null
+++ b/contrib/lua-torch/nn/SpatialLPPooling.lua
@@ -0,0 +1,43 @@
+local SpatialLPPooling, parent = torch.class('nn.SpatialLPPooling', 'nn.Sequential')
+
+function SpatialLPPooling:__init(nInputPlane, pnorm, kW, kH, dW, dH)
+   parent.__init(self)
+
+   dW = dW or kW
+   dH = dH or kH
+
+   self.kW = kW
+   self.kH = kH
+   self.dW = dW
+   self.dH = dH
+
+   if pnorm == 2 then
+      self:add(nn.Square())
+   else
+      self:add(nn.Power(pnorm))
+   end
+   self:add(nn.SpatialAveragePooling(kW, kH, dW, dH))
+   self:add(nn.MulConstant(kW*kH))
+   if pnorm == 2 then
+      self:add(nn.Sqrt())
+   else
+      self:add(nn.Power(1/pnorm))
+   end
+end
+
+-- the module is a Sequential: by default, it'll try to learn the parameters
+-- of the sub sampler: we avoid that by redefining its methods.
+function SpatialLPPooling:reset()
+end
+
+function SpatialLPPooling:accGradParameters()
+end
+
+function SpatialLPPooling:accUpdateGradParameters()
+end
+
+function SpatialLPPooling:zeroGradParameters()
+end
+
+function SpatialLPPooling:updateParameters()
+end