add preprocessing layers and change layer constructor interface

1 files changed, 24 insertions, 0 deletions

diff --git a/layer/window.lua b/layer/window.lua
new file mode 100644
index 0000000..8e9e761
--- /dev/null
+++ b/layer/window.lua
@@ -0,0 +1,24 @@
+local WindowLayer = nerv.class("nerv.WindowLayer", "nerv.Layer")
+
+function WindowLayer:__init(id, global_conf, layer_conf)
+    self.id = id
+    self.gconf = global_conf
+    self.window = layer_conf.window
+    self.dim_in = layer_conf.dim_in
+    self.dim_out = layer_conf.dim_out
+    self:check_dim_len(1, 1)
+end
+
+function WindowLayer:init()
+    if self.dim_in[1] ~= self.window.trans:ncol() then
+        nerv.error("mismatching dimensions of input and window parameter")
+    end
+    if self.dim_out[1] ~= self.window.trans:ncol() then
+        nerv.error("mismatching dimensions of output and window parameter")
+    end
+end
+
+function WindowLayer:propagate(input, output)
+    output[1]:copy_fromd(input[1])
+    output[1]:scale_row(self.window.trans)
+end