public NeuralLinkData(NeuralLink neuralLink)
{
neuralLinkModel = neuralLink;
if (neuralLinkModel.Nt == N_Type.Convolution_layer)
{
layerPoolingOutput = new CudaPieceFloat(PairInputStream.MAXSEGMENT_BATCH * neuralLinkModel.Neural_Out.Number, false, true);
layerMaxPooling_Index = new CudaPieceInt(ParameterSetting.BATCH_SIZE * neuralLinkModel.Neural_Out.Number, false, true);
}
weightDeriv = new CudaPieceFloat(neuralLinkModel.Neural_In.Number * neuralLinkModel.Neural_Out.Number * neuralLinkModel.N_Winsize, false, true);
biasDeriv = new CudaPieceFloat(neuralLinkModel.Neural_Out.Number, false, true);
weightUpdate = new CudaPieceFloat(neuralLinkModel.Neural_In.Number * neuralLinkModel.Neural_Out.Number * neuralLinkModel.N_Winsize, false, true);
biasUpdate = new CudaPieceFloat(neuralLinkModel.Neural_Out.Number, false, true);
}
public DNN(int featureSize, int[] layerDim, int[] activation, float[] sigma, int[] arch, int[] wind, bool backupOnly)
{
NeuralLayer inputlayer = new NeuralLayer(featureSize);
neurallayers.Add(inputlayer);
for (int i = 0; i < layerDim.Length; i++)
{
NeuralLayer layer = new NeuralLayer(layerDim[i]);
neurallayers.Add(layer);
}
for (int i = 0; i < layerDim.Length; i++)
{
NeuralLink link = new NeuralLink(neurallayers[i], neurallayers[i + 1], (A_Func)activation[i], 0, sigma[i],
(N_Type)arch[i], wind[i], backupOnly);
neurallinks.Add(link);
}
}
/// <summary>
/// given batch of input data. calculate the output.
/// </summary>
/// <param name="data"></param>
//unsafe public void forward_activate( BatchSample_Input data, List<Amplib.AMPArrayInternal> layerOutputs)
unsafe public void forward_activate(BatchSample_Input data)
{
int layerIndex = 0;
foreach (NeuralLinkData neurallinkData in neurallinks)
{
NeuralLink neurallink = neurallinkData.NeuralLinkModel;
///first layer.
if (layerIndex == 0)
{
if (neurallink.Nt == N_Type.Fully_Connected)
{
MathOperatorManager.GlobalInstance.SEQ_Sparse_Matrix_Multiply_INTEX(data, neurallink.weight, neurallayers[layerIndex + 1].Output,
neurallink.Neural_In.Number, neurallink.Neural_Out.Number, neurallink.N_Winsize);
}
else if (neurallink.Nt == N_Type.Convolution_layer)
{
MathOperatorManager.GlobalInstance.Convolution_Sparse_Matrix_Multiply_INTEX(data, neurallink.weight, neurallinkData.LayerPoolingOutput, neurallink.Neural_In.Number, neurallink.Neural_Out.Number, neurallink.N_Winsize);
MathOperatorManager.GlobalInstance.Max_Pooling(neurallinkData.LayerPoolingOutput, data, neurallayers[layerIndex + 1].Output, neurallinkData.LayerMaxPooling_Index, neurallink.Neural_Out.Number);
}
}
else
{
MathOperatorManager.GlobalInstance.Matrix_Multipy(neurallayers[layerIndex].Output, neurallink.weight, neurallayers[layerIndex + 1].Output, data.batchsize, neurallink.Neural_In.Number, neurallink.Neural_Out.Number, 0);
}
if (neurallink.Af == A_Func.Tanh)
{
MathOperatorManager.GlobalInstance.Matrix_Add_Tanh(neurallayers[layerIndex + 1].Output, neurallink.bias, data.batchsize, neurallink.Neural_Out.Number);
}
else if (neurallink.Af == A_Func.Linear)
{
MathOperatorManager.GlobalInstance.Matrix_Add_Vector(neurallayers[layerIndex + 1].Output, neurallink.bias, data.batchsize, neurallink.Neural_Out.Number);
}
layerIndex += 1;
}
}
/// <summary>
///
/// </summary>
/// <param name="fileName"></param>
/// <param name="allocateStructureFromEmpty">True will init DNN structure and allocate new space; False will only load data from file</param>
public void Model_Load(string fileName, bool allocateStructureFromEmpty)
{
FileStream mstream = new FileStream(fileName, FileMode.Open, FileAccess.Read);
BinaryReader mreader = new BinaryReader(mstream);
List <int> layer_info = new List <int>();
int mlayer_num = mreader.ReadInt32();
for (int i = 0; i < mlayer_num; i++)
{
layer_info.Add(mreader.ReadInt32());
}
for (int i = 0; i < layer_info.Count; i++)
{
if (allocateStructureFromEmpty)
{
NeuralLayer layer = new NeuralLayer(layer_info[i]);
neurallayers.Add(layer);
}
}
int mlink_num = mreader.ReadInt32();
for (int i = 0; i < mlink_num; i++)
{
int in_num = mreader.ReadInt32();
int out_num = mreader.ReadInt32();
float inithidbias = mreader.ReadSingle();
float initweightsigma = mreader.ReadSingle();
NeuralLink link = null;
if (ParameterSetting.LoadModelOldFormat)
{
if (allocateStructureFromEmpty)
{
// for back-compatibility only. The old model format donot have those three fields
link = new NeuralLink(neurallayers[i], neurallayers[i + 1], A_Func.Tanh, 0, initweightsigma, N_Type.Fully_Connected, 1, false);
}
}
else
{
// this is the eventually favorable loading format
int mws = mreader.ReadInt32();
//// decompose a Int32 integer, whose higher 16 bits store activiation function and lower 16 bits store network type
//// In addition, for backward-compatible, neurallinks[i].Af = tanh is stored as 0, neurallinks[i].Af = linear is stored as 1, neurallinks[i].Af = rectified is stored as 2
//// Refer to the Int2A_FuncMapping
int afAndNt = mreader.ReadInt32();
A_Func aF = Int2A_Func(afAndNt >> 16);
N_Type mnt = (N_Type)(afAndNt & ((1 << 16) - 1));
P_Pooling mp = (P_Pooling)mreader.ReadInt32();
if (allocateStructureFromEmpty)
{
link = new NeuralLink(neurallayers[i], neurallayers[i + 1], aF, 0, initweightsigma, mnt, mws, false);
}
}
if (allocateStructureFromEmpty)
{
neurallinks.Add(link);
}
}
for (int i = 0; i < mlink_num; i++)
{
int weight_len = mreader.ReadInt32(); // Write(neurallinks[i].Back_Weight.Length);
if (weight_len != neurallinks[i].Back_Weight.Length)
{
Console.WriteLine("Loading Model Weight Error! " + weight_len.ToString() + " " + neurallinks[i].Back_Weight.Length.ToString());
Console.ReadLine();
}
for (int m = 0; m < weight_len; m++)
{
neurallinks[i].Back_Weight[m] = mreader.ReadSingle();
}
int bias_len = mreader.ReadInt32();
if (bias_len != neurallinks[i].Back_Bias.Length)
{
Console.WriteLine("Loading Model Bias Error! " + bias_len.ToString() + " " + neurallinks[i].Back_Bias.Length.ToString());
Console.ReadLine();
}
for (int m = 0; m < bias_len; m++)
{
neurallinks[i].Back_Bias[m] = mreader.ReadSingle();
}
}
mreader.Close();
mstream.Close();
CopyIntoCuda();
}
public void Init(NeuralLink refLink)
{
weight.Init(refLink.Back_Weight);
bias.Init(refLink.Back_Bias);
}