require 'torch'
require 'nn'
-
require 'dagnn'
+-- torch.setnumthreads(params.nbThreads)
+torch.setdefaulttensortype('torch.DoubleTensor')
+torch.manualSeed(2)
+
function checkGrad(model, criterion, input, target)
local params, gradParams = model:getParameters()
end
end
--- torch.setnumthreads(params.nbThreads)
-torch.setdefaulttensortype('torch.DoubleTensor')
-torch.manualSeed(2)
+-- +- Linear(10, 10) -> ReLU ---> d --+
+-- / / \
+-- / / \
+-- --> a --> b -----------> c --------------+ e -->
+-- \ /
+-- \ /
+-- +-- Mul(-1) --------+
--- +--> c ----> e --+
--- / / \
--- / / \
--- input --> a --> b ---> d ----+ g --> output
--- \ /
--- \ /
--- +--> f ---+
+model = nn.DAG()
-a = nn.Linear(10, 10)
+a = nn.Linear(50, 10)
b = nn.ReLU()
-c = nn.Linear(10, 3)
-d = nn.Linear(10, 3)
-e = nn.CMulTable()
-f = nn.Linear(3, 3)
-g = nn.CAddTable()
-
-model = nn.DAG()
+c = nn.Linear(10, 15)
+d = nn.CMulTable()
+e = nn.CAddTable()
model:addEdge(a, b)
-model:addEdge(b, c)
-model:addEdge(b, d)
-model:addEdge(c, e)
+model:addEdge(b, nn.Linear(10, 15), nn.ReLU(), d)
model:addEdge(d, e)
-model:addEdge(d, f)
-model:addEdge(e, g)
-model:addEdge(f, g)
+model:addEdge(b, c)
+model:addEdge(c, d)
+model:addEdge(c, nn.Mul(-1), e)
model:setInput(a)
-model:setOutput(g)
-
-input = torch.Tensor(3, 10):uniform()
-
-print('******************************************************************')
-print('** updateOutput **************************************************')
-print('******************************************************************')
-
-output = model:updateOutput(input):clone()
-
-printTensorTable(output)
-
-print('******************************************************************')
-print('** updateGradInput ***********************************************')
-print('******************************************************************')
-
-gradInput = model:updateGradInput(input, output)
-
-printTensorTable(gradInput)
+model:setOutput(e)
-print('******************************************************************')
-print('** checkGrad *****************************************************')
-print('******************************************************************')
+local input = torch.Tensor(30, 50):uniform()
+local output = model:updateOutput(input):clone()
output:uniform()