//protected LMatrix _forward(LMatrix x, WehtInfo info, int kerDepIndex)
//{
// int kernelRow = info.W.Length;
// int kernelColumn = info.W[0].Length;
// int row = (x.Row + 2 * this.Padding - kernelRow) / this.Stride + 1;
// int column = (x.Column + 2 * this.Padding - kernelColumn) / this.Stride + 1;
// if (this._col[kerDepIndex] == null)
// this._col[kerDepIndex] = im2col(x.Matrix, row, column, kernelRow, kernelColumn, Stride);
// LMatrix tW = info.W.Flatten();
// LMatrix _out = _col[kerDepIndex] * tW.T;
// LMatrix res = _out.ReShape(row, column);
// return res;
//}
protected double[,] _forward(double[,] mat, WehtInfo info, int kerDepIndex, int resRow, int resCol)
{
if (this._col[kerDepIndex] == null)
{
this._col[kerDepIndex] = im2col(mat, resRow, resCol, kernelRow, kernelColumn, Stride);
}
LMatrix tW = info.W.Flatten();
LMatrix _out = _col[kerDepIndex] * tW.T;
return(_out.ReShape(resRow, resCol));
}
//protected LMatrix _backward(LMatrix dout, WehtInfo info, int kerDepIndex)
//{
// int kernelRow = info.W.Length;
// int kernelColumn = info.W[0].Length;
// LMatrix dx = dout.Flatten;
// LMatrix _dw = dx * this._col[kerDepIndex];
// if (info.DW == null)
// info.DW = _dw.ReShape(kernelRow, kernelColumn).Matrix;
// else
// info.DW = info.DW.Plus(_dw.ReShape(kernelRow, kernelColumn).Matrix);
// LMatrix tW = info.W.Flatten();
// LMatrix _out = dx.T * tW;
// return col2im(_out.Matrix, Input[kerDepIndex].Length, Input[kerDepIndex][0].Length,
// kernelRow, kernelColumn, Stride);
//}
protected LMatrix _backward(LMatrix dout, WehtInfo info, int kerDepIndex)
{
int kernelRow = info.W.GetLength(0);
int kernelColumn = info.W.GetLength(1);
LMatrix dx = dout.Flatten();
LMatrix _dw = dx * this._col[kerDepIndex];
if (info.DW == null)
{
info.DW = _dw.ReShape(kernelRow, kernelColumn);
}
else
{
info.DW.Plus(_dw.ReShape(kernelRow, kernelColumn), kernelRow, kernelColumn);
}
LMatrix tW = info.W.Flatten();
LMatrix _out = dx.T * tW;
return(col2im(_out.Matrix, _input_dim1, _input_dim2,
kernelRow, kernelColumn, Stride));
}
