public static void Task2()
{
//HXandY(matr_t2);
//HXifY(PXifY(matr_t2), px(matr_t2));
var pxT2 = Px(MatrT2);
var pyT2 = Py(MatrT2);
Console.WriteLine("H(X)");
H(pxT2, out var hX);
Console.WriteLine("H(Y)");
H(pyT2, out var hY);
Console.WriteLine("ro_x");
Ro(hX, Hmax(3), out _);
Console.WriteLine("ro_y");
Ro(hY, Hmax(3), out _);
Console.WriteLine("P(Y|X)");
var pYifX = Lab1.PYifX(MatrT2);
HYifX(pYifX, pxT2);
var hxandy = HXandY(MatrT2);
AvgInfo(hX, hY, hxandy);
}
private static double I(double[][] matrix_pxandy)
{
var px = Lab1.Px(matrix_pxandy);
Lab1.H(px, out var Hx);
var py = Lab1.Py(matrix_pxandy);
Lab1.H(py, out var Hy);
var hXandY = Lab1.HXandY(matrix_pxandy);
var res = Hx + Hy - hXandY;
Console.WriteLine("I(X;Y) = " + Hx + " + " + Hy + " - " + hXandY + " = " + res);
return(res);
}
private static double RelativeDifference(List <Symbol> coded, int wordLength)
{
PullLists(coded, out var pi, out var li);
var l = AverageLength(pi, li) / wordLength;
Lab1.H(pi, out var entr);
var res = ((l - entr) / entr) * 100.0;
Console.WriteLine("((" +
Math.Round(l, 3) +
"-" +
Math.Round(entr, 3) +
")/" +
entr +
")*100%=" +
Math.Round(res, 3) +
"%");
return(res);
}
public static void Task1()
{
Console.WriteLine("I(X;Y)");
var I = Lab2.I(matrix_t1);
Console.WriteLine("V");
var v = Lab2.V(v0_t1, I);
Console.WriteLine("P(X|Y)");
var pXifY = Lab1.Pxify(matrix_t1, Lab1.Py(matrix_t1));
Console.WriteLine("P(Y|X)");
var pYifX = Lab1.PYifX(matrix_t1);
Console.WriteLine("C");
var c = Lab2.C(v0_t1, pYifX);
string[] val = { "I(X;Y)", "V", "C" };
AnsverTable(val, new[] { I, v, c });
}
private static double C(int v0, double[][] matrix_pyifx)
{
var max = Lab1.Hmax(3);
var res = 0.0;
var precalc = max + " + ";
var calc = max + " + ";
for (int i = 0; i < 3; i++)
{
var val = matrix_pyifx[1][i];
var interm = val * Math.Log(val, 2);
precalc += val + "log2 " + val + " + ";
calc += interm + " + ";
res += interm;
}
res += max;
res *= v0;
Console.WriteLine("C =\n " + v0 + "*(" + precalc + ")=\n " + v0 + "*(" + calc + ")=" + Math.Round(res, 3));
return(res);
}
internal static double[][] PYifX(double[][] pXandY)
{
var result = new double[pXandY.Length][];
var px = Lab1.Px(pXandY);
var precalculated = "";
var calculated = "";
var len = pXandY.Length;
for (var i = 0; i < len; i++)
{
result[i] = new double[len];
for (var j = 0; j < len; j++)
{
var probability = Pxify(pXandY[i][j], px[i]);
precalculated += pXandY[i][j] + " / " + px[i] + "\t";
calculated += Math.Round(probability, 2) + "\t";
result[i][j] = probability;
}
precalculated += "\n";
calculated += "\n";
}
Console.WriteLine("P(Y|X) = ");
for (int i = 0; i < len; i++)
{
for (int j = 0; j < len; j++)
{
Console.Write("\t" + Math.Round(result[i][j], 2));
}
Console.Write("\n");
}
Console.WriteLine("P(Y|X) = \n" + precalculated + "\n=\n" + calculated);
return(result);
}
