public void NominalMunchAugmentor_Augment()
{
var random = new Random(2342);
var data = new F64Matrix(10, 2);
data.Map(() => random.Next(2));
var sut = new NominalMungeAugmentator(0.5);
var actual = sut.Agument(data);
var expected = new F64Matrix(new double[] { 0, 0, 1, 0, 1, 0, 0, 0, 1, 1, 1, 1, 0, 1, 1, 1, 0, 0, 0, 0 },
10, 2);
Assert.AreNotEqual(data, actual);
Assert.AreEqual(expected.RowCount, actual.RowCount);
Assert.AreEqual(expected.ColumnCount, actual.ColumnCount);
var expectedData = expected.Data();
var actualData = expected.Data();
for (int i = 0; i < expectedData.Length; i++)
{
Assert.AreEqual(expectedData[i], actualData[i], 0.00001);
}
}
public void ContinuousMunchAugmentor_Augment()
{
var random = new Random(2342);
var data = new F64Matrix(10, 2);
data.Map(() => random.NextDouble());
var sut = new ContinuousMungeAugmentator(0.5, 1.0);
var actual = sut.Agument(data);
var expected = new F64Matrix(new double[] { 0.246329100917247, 0.00372775551105279, 0.797896387892727, 0.441504622549519, 0.585635684703307, 0.227548045212192, 0.254812818139239, 0.387049265851755, 0.722062122878647, 0.888775135804329, 0.714802723710799, 0.900545311114073, 0.643038906922116, 0.907352483788204, 0.316260776164132, 0.658306110025526, 0.343312428492733, 0.0337710422620974, 0.0760259759035082, 0.148426381940221 },
10, 2);
Assert.AreNotEqual(data, actual);
Assert.AreEqual(expected.RowCount, actual.RowCount);
Assert.AreEqual(expected.ColumnCount, actual.ColumnCount);
var expectedData = expected.Data();
var actualData = expected.Data();
for (int i = 0; i < expectedData.Length; i++)
{
Assert.AreEqual(expectedData[i], actualData[i], 0.00001);
}
}
public void F64MatrixExtensions_Map()
{
var matrix = new F64Matrix(InputData.ToArray(), 2, 3);
matrix.Map(() => 10);
var expected = Enumerable.Range(0, matrix.Data().Length).Select(v => 10.0).ToArray();
CollectionAssert.AreEqual(expected, matrix.Data());
}
/// <summary>
/// Multiply matrix a with matrix b
/// </summary>
/// <param name="a"></param>
/// <param name="b"></param>
/// <returns></returns>
public static F64Matrix MultiplyF64(F64Matrix a, F64Matrix b)
{
var aData = a.Data();
var aRows = a.RowCount;
var aCols = a.ColumnCount;
var bData = b.Data();
var bRows = b.RowCount;
var bCols = b.ColumnCount;
var cRows = aRows;
var cCols = bCols;
var cData = new double[cRows * cCols];
if (aCols != bRows)
{
throw new ArgumentException("matrix a cols: " + aCols + " differs from matrix b rows: " + bRows);
}
Parallel.For(0, cRows, i =>
{
for (int k = 0; k < bRows; k++)
{
for (int j = 0; j < cCols; j++)
{
cData[i * cCols + j] += aData[i * aCols + k] * bData[k * bCols + j];
}
}
});
return(new F64Matrix(cData, cRows, cCols));
}
public void F64MatrixExtensions_Clear()
{
var matrix = new F64Matrix(InputData.ToArray(), 2, 3);
matrix.Clear();
CollectionAssert.AreEqual(new double[2 * 3], matrix.Data());
}
/// <summary>
/// Pins the provided F64Matrix
/// </summary>
/// <param name="matrix"></param>
public F64MatrixPinnedPtr(F64Matrix matrix)
{
if (matrix == null)
{
throw new ArgumentNullException("matrix");
}
var data = matrix.Data();
m_handle = GCHandle.Alloc(data, GCHandleType.Pinned);
m_ptr = (double *)m_handle.AddrOfPinnedObject().ToPointer();
m_rows = matrix.RowCount;
m_cols = matrix.ColumnCount;
}
/// <summary>
/// Multiply matrix a with matrix b
/// Copies output to provided matrix.
/// </summary>
/// <param name="a"></param>
/// <param name="b"></param>
/// <param name="output"></param>
public static void MultiplyF64(F64Matrix a, F64Matrix b, F64Matrix output)
{
var aData = a.Data();
var aRows = a.RowCount;
var aCols = a.ColumnCount;
var bData = b.Data();
var bRows = b.RowCount;
var bCols = b.ColumnCount;
var outputArray = output.Data();
if (aCols != bRows)
{
throw new ArgumentException("matrix a cols: " + aCols + " differs from matrix b rows: " + bRows);
}
if (output.RowCount != aRows)
{
throw new ArgumentException("output matrix rows: " + output.RowCount
+ " differs from matrix a rows: " + aRows);
}
if (output.ColumnCount != bCols)
{
throw new ArgumentException("output matrix rows: " + output.ColumnCount
+ " differs from matrix b cols: " + bCols);
}
Parallel.For(0, aRows, i =>
{
for (int k = 0; k < bRows; k++)
{
for (int j = 0; j < bCols; j++)
{
outputArray[i * bCols + j] += aData[i * aCols + k] * bData[k * bCols + j];
}
}
});
}
/// <summary>
/// Multiply vector v with matrix a
/// </summary>
/// <param name="a"></param>
/// <param name="v"></param>
/// <returns></returns>
public static double[] MultiplyVectorF64(F64Matrix a, double[] v)
{
var rows = a.RowCount;
var cols = a.ColumnCount;
var data = a.Data();
var output = new double[rows];
if (cols != v.Length)
{
throw new ArgumentException("matrix cols: " + cols + " differs from vector length: " + v.Length);
}
for (int i = 0; i < rows; ++i)
{
for (int j = 0; j < cols; ++j)
{
output[i] += v[j] * data[i * cols + j];
}
}
return(output);
}
/// <summary>
/// Multiply vector v with matrix a.
/// Copies output to provided array.
/// </summary>
/// <param name="a"></param>
/// <param name="v"></param>
/// <param name="output"></param>
public static void MultiplyVectorF64(F64Matrix a, double[] v, double[] output)
{
var rows = a.RowCount;
var cols = a.ColumnCount;
var data = a.Data();
if (cols != v.Length)
{
throw new ArgumentException("matrix cols: " + cols + " differs from vector length: " + v.Length);
}
for (int i = 0; i < rows; ++i)
{
var sum = 0.0;
for (int j = 0; j < cols; ++j)
{
sum += v[j] * data[i * cols + j];
}
output[i] = sum;
}
}