From 1a424bf9233f9b1c67ef135f1a3892b7986c5564 Mon Sep 17 00:00:00 2001
From: Qi Liu <liuq901@163.com>
Date: Mon, 29 Feb 2016 22:05:43 +0800
Subject: add network & fix graph_layer

---
 nerv/nn/network.lua | 68 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100644 nerv/nn/network.lua

(limited to 'nerv/nn/network.lua')

diff --git a/nerv/nn/network.lua b/nerv/nn/network.lua
new file mode 100644
index 0000000..6cee08b
--- /dev/null
+++ b/nerv/nn/network.lua
@@ -0,0 +1,68 @@
+local network = nerv.class('nerv.Network')
+
+function network:__init(graph)
+    self.layers = {}
+    self.socket = self:compile(graph)
+    for i = 1, #self.layers do
+        print(self.layers[i].layer.id)
+        local _, dim_out = self.layers[i].layer:get_dim()
+        for j = 1, #dim_out do
+            for k = 1, #self.layers[i].connections[j] do
+                local connections = self.layers[i].connections[j][k]
+                print(i, connections[1], connections[2], connections[3])
+            end
+        end
+    end
+end
+
+function network:compile(layer)
+    local socket = {inputs = {}, outputs = {}}
+    if not nerv.is_type(layer, 'nerv.GraphLayer') then
+        table.insert(self.layers, {layer = layer, connections = {}})
+        local id = #self.layers
+        local dim_in, dim_out = layer:get_dim()
+        for i = 1, #dim_in do
+            socket.inputs[i] = {{id, i, 0}}
+        end
+        for i = 1, #dim_out do
+            socket.outputs[i] = {id, i, 0}
+            self.layers[id].connections[i] = {}
+        end
+    else
+        local sublayer_socket = {}
+        for id, sublayer in pairs(layer.layers) do
+            if id ~= '<input>' then
+               sublayer_socket[sublayer.id] = self:compile(sublayer.layer)
+            end
+        end
+        local dim_in, _ = layer:get_dim()
+        for i = 1, #dim_in do
+            socket.inputs[i] = {}
+        end
+        for _, edge in pairs(layer.connections) do
+            -- id = 0 means <input> or <output>
+            local id_from, port_from = edge[1], edge[2]
+            local id_to, port_to = edge[3], edge[4]
+            local time = edge[5]
+            if id_from == 0 then
+                for _, input in pairs(sublayer_socket[id_to].inputs[port_to]) do
+                    local id, port, t = input[1], input[2], input[3] + time
+                    table.insert(socket.inputs[port_from], {id, port, t})
+                end
+            else
+                local output = sublayer_socket[id_from].outputs[port_from]
+                local id, port, t = output[1], output[2], output[3] + time
+                if id_to == 0 then
+                    socket.outputs[port_to] = {id, port, t}
+                else
+                    local connections = self.layers[id].connections[port]
+                    for _, input in pairs(sublayer_socket[id_to].inputs[port_to]) do
+                        local id1, port1, t1 = input[1], input[2], input[3]
+                        table.insert(connections, {id1, port1, t + t1})
+                    end
+                end
+            end
+        end
+    end
+    return socket
+end
-- 
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