From c13115662e739b434f1071eb623a41a39d8b4985 Mon Sep 17 00:00:00 2001
From: Determinant <ted.sybil@gmail.com>
Date: Thu, 28 May 2015 14:31:31 +0800
Subject: should support multiple input/output for layers

---
 layer/affine.lua  | 12 ++++++------
 layer/sigmoid.lua |  4 ++--
 matrix/init.lua   |  4 ++--
 3 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/layer/affine.lua b/layer/affine.lua
index 94e7497..97703a8 100644
--- a/layer/affine.lua
+++ b/layer/affine.lua
@@ -34,10 +34,10 @@ function nerv.AffineLayer:update(bp_err, input, output)
     local gconf = self.gconf
     -- momentum gain
     local mmt_gain = 1.0 / (1.0 - gconf.momentum);
-    local n = input:nrow() * mmt_gain
+    local n = input[0]:nrow() * mmt_gain
     -- update corrections (accumulated errors)
-    ltc:mul(input, bp_err, 1.0, gconf.momentum, 'T', 'N')
-    bc:add(bc, bp_err:colsum(), gconf.momentum, 1.0)
+    ltc:mul(input[0], bp_err[0], 1.0, gconf.momentum, 'T', 'N')
+    bc:add(bc, bp_err[0]:colsum(), gconf.momentum, 1.0)
     -- perform update
     ltp:add(ltp, ltc, 1.0, -gconf.lrate / n)
     bp:add(bp, bc, 1.0, -gconf.lrate / n)
@@ -47,11 +47,11 @@ end
 
 function nerv.AffineLayer:propagate(input, output)
     -- apply linear transform
-    output:mul(input, self.ltp.trans, 1.0, 0.0, 'N', 'N')
+    output[0]:mul(input[0], self.ltp.trans, 1.0, 0.0, 'N', 'N')
     -- add bias
-    output:add_row(self.bp.trans, 1.0)
+    output[0]:add_row(self.bp.trans, 1.0)
 end
 
 function nerv.AffineLayer:back_propagate(next_bp_err, bp_err, input, output)
-    next_bp_err:mul(bp_err, self.ltp.trans, 1.0, 0.0, 'N', 'T')
+    next_bp_err[0]:mul(bp_err[0], self.ltp.trans, 1.0, 0.0, 'N', 'T')
 end
diff --git a/layer/sigmoid.lua b/layer/sigmoid.lua
index d0a87c0..41a6ef7 100644
--- a/layer/sigmoid.lua
+++ b/layer/sigmoid.lua
@@ -10,9 +10,9 @@ function SigmoidLayer:update(bp_err, input, output)
 end
 
 function SigmoidLayer:propagate(input, output)
-    output:sigmoid(input)
+    output[0]:sigmoid(input[0])
 end
 
 function SigmoidLayer:back_propagate(next_bp_err, bp_err, input, output)
-    next_bp_err:sigmoid_grad(bp_err, output)
+    next_bp_err[0]:sigmoid_grad(bp_err[0], output[0])
 end
diff --git a/matrix/init.lua b/matrix/init.lua
index a04e83a..0075668 100644
--- a/matrix/init.lua
+++ b/matrix/init.lua
@@ -41,12 +41,12 @@ end
 
 function nerv.CuMatrixFloat.new_from_host(mat)
     local res = nerv.CuMatrixFloat(mat:nrow(), mat:ncol())
-    res:copy_from(mat)
+    res:copy_fromh(mat)
     return res
 end
 
 function nerv.CuMatrixFloat:new_to_host()
     local res = nerv.MMatrixFloat(self:nrow(), self:ncol())
-    self:copy_to(res)
+    self:copy_toh(res)
     return res
 end
-- 
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