public Kernel(fMap source, int?padding, int?size)
{
this.padding = (padding == null ? 0 : padding.Value);
this.size = size;
this.source = source;
knode = new Node[size.Value * size.Value];
}
/// <summary>
/// configure filter
/// </summary>
/// <param name="configuration">activation=logistic(a=-1, b=2.0, c=5.0); kernel=avgpool(size=7, padding=2, stride=2); outputfieldsize=2</param>
/// <returns></returns>
public virtual Filter Configure(string configuration)
{
// 0. initialize strings
string cfg = Global.Parser.RemoveWhiteSpaces(configuration), c;
string[] a = Global.Parser.Split(cfg, ";"), d = null;
string[] e = new string[1];
Kernel kernel;
// 1. construct function
c = Global.Parser.Extract <string>(a, new string[] { "act", "activation" }, Global.Parser.Option.None, out string[] b);
if (c != default)
{
d = Global.Parser.Split(c, "(", ")");
function = Function.MakeNew(d[0]);
function.Configure(d[1]);
}
// 2. construct kernel
c = Global.Parser.Extract <string>(b, new string[] { "ker", "kernel" }, Global.Parser.Option.None, out a);
if (c != default)
{
d = Global.Parser.Split(c, "(", ")");
for (int i = 0; i < sources.Count; i++)
{
kernel = Kernel.MakeNew(d[0]);
//e[1] = d[1];
kernel.Configure(d[1]);
kernel.Source = sources[i];
kernels.Add(kernel);
}
}
// 3. construct targetMap
kernel = Kernel.MakeNew(d[0]);
kernel.Configure(d[1]);
// 4. get outputfieldsize of fmap
for (int i = 0; i < a.Length; i++)
{
d = Global.Parser.Split(a[i], "=");
switch (d[0])
{
case "outputfieldsize":
outputfieldsize = int.Parse(d[1]);
break;
}
}
// size = (((src.Size - kernel.Size) + (2 * kernel.Padding)) / kernel.Stride) + 1;
int rows = ((sources[0].Rows - kernel.Rows + (2 * kernel.Padding)) / kernel.Stride) + 1;
int cols = ((sources[0].Columns - kernel.Columns + (2 * kernel.Padding)) / kernel.Stride) + 1;
target = new fMap();
target.Configure <double?>(rows, cols, outputfieldsize);
// 5. return object
return(this);
}