public void TestFindBestNMotifsMultipleProfiles()
{
float[,] tss =
{
{ 10, 10, 10, 10, 10, 10, 9, 10, 10, 10, 10, 10, 11, 10, 9 },
{ 10, 10, 10, 10, 10, 10, 9, 10, 10, 10, 10, 10, 11, 10, 9 }
};
float[,] tss2 = { { 10, 11, 10, 9 }, { 10, 11, 10, 9 } };
using (KhivaArray arr = KhivaArray.Create(tss), arr2 = KhivaArray.Create(tss2))
{
var(pArr, iArr) = Matrix.Stomp(arr, arr2, 3);
using (pArr)
using (iArr)
{
var(distancesArr, indicesArr, subsequenceArr) = Matrix.FindBestNMotifs(pArr, iArr, 3, 1);
using (distancesArr)
using (indicesArr)
using (subsequenceArr)
{
var indices = indicesArr.GetData3D <uint>();
var subsequence = subsequenceArr.GetData3D <uint>();
Assert.AreEqual(new uint[, , ] {
{ { 12 }, { 12 } }, { { 12 }, { 12 } }
}, indices);
Assert.AreEqual(new uint[, , ] {
{ { 1 }, { 1 } }, { { 1 }, { 1 } }
}, subsequence);
}
}
}
}
public void TestAggregatedLinearTrendMean()
{
var tss = new float[] { 2, 2, 2, 3, 3, 3, 4, 4, 4, 5, 5, 5 };
using (var arr = KhivaArray.Create(tss))
{
var(slopeArr, interceptArr, rvalueArr, pValueArr, stderrestArr) =
Features.AggregatedLinearTrend(arr, 3, 0);
using (slopeArr)
using (interceptArr)
using (rvalueArr)
using (pValueArr)
using (stderrestArr)
{
var slope = slopeArr.GetData1D <float>();
var intercept = interceptArr.GetData1D <float>();
var rvalue = rvalueArr.GetData1D <float>();
var pvalue = pValueArr.GetData1D <float>();
var stderrest = stderrestArr.GetData1D <float>();
Assert.AreEqual(1, slope[0], Delta);
Assert.AreEqual(2, intercept[0], Delta);
Assert.AreEqual(1, rvalue[0], Delta);
Assert.AreEqual(0, pvalue[0], Delta);
Assert.AreEqual(0, stderrest[0], Delta);
}
}
}
public void TestQuantileCut3()
{
float[,] tss = { { 0, 1, 2, 3, 4, 5 }, { 6, 7, 8, 9, 10, 11 } };
using (var arr = KhivaArray.Create(tss))
{
var quantile = Statistics.QuantilesCutStatistics(arr, 3);
float[,,] expected =
{
{
{ -0.0000F, -0.0000F, 1.6667F, 1.6667F, 3.3333F, 3.3333F },
{ 1.6667F, 1.6667F, 3.3333F, 3.3333F, 5.0000F, 5.0000F }
},
{
{ 6.0000F, 6.0000F, 7.6667F, 7.6667F, 9.3333F, 9.3333F },
{ 7.6667F, 7.6667F, 9.3333F, 9.3333F, 11.0000F, 11.0000F }
}
};
using (quantile)
{
var result = quantile.GetData3D <float>();
Check3DArray(expected, result);
}
}
}
public void TestFftCoefficient()
{
double[,] tss = { { 0, 1, 2, 3, 4, 5 }, { 6, 7, 8, 9, 10, 11 } };
using (var arr = KhivaArray.Create(tss))
{
var(realArr, imagArr, absoluteArr, angleArr) = Features.FftCoefficient(arr, 0);
using (realArr)
using (imagArr)
using (absoluteArr)
using (angleArr)
{
var real = realArr.GetData2D <double>();
var imag = imagArr.GetData2D <double>();
var absolute = absoluteArr.GetData2D <double>();
var angle = angleArr.GetData2D <double>();
Assert.AreEqual(15, real[0, 0], Delta);
Assert.AreEqual(51, real[1, 0], Delta);
Assert.AreEqual(0, imag[0, 0], Delta);
Assert.AreEqual(0, imag[1, 0], Delta);
Assert.AreEqual(15, absolute[0, 0], Delta);
Assert.AreEqual(51, absolute[1, 0], Delta);
Assert.AreEqual(0, angle[0, 0], Delta);
Assert.AreEqual(0, angle[1, 0], Delta);
}
}
}
public void TestQuantileCut7()
{
float[,] tss = { { 0, 1, 2, 3, 4, 5 }, { 6, 7, 8, 9, 10, 11 } };
using (var arr = KhivaArray.Create(tss))
{
var quantile = Statistics.QuantilesCutStatistics(arr, 7);
float[,,] expected =
{
{
{ -0.0000F, 0.7143F, 1.4286F, 2.8571F, 3.5714F, 4.2857F },
{ 0.7143F, 1.4286F, 2.1429F, 3.5714F, 4.2857F, 5.0000F }
},
{
{ 6.0000F, 6.7143F, 7.4286F, 8.8571F, 9.5714F, 10.2857F },
{ 6.7143F, 7.4286F, 8.1429F, 9.5714F, 10.2857F, 11.0000F }
}
};
using (quantile)
{
var result = quantile.GetData3D <float>();
Check3DArray(expected, result);
}
}
}
public void TestCrossCovariance()
{
var tss = new float[, ] {
{ 0, 1, 2, 3 }, { 10, 11, 12, 13 }
};
var tss2 = new float[, ] {
{ 4, 6, 8, 10, 12 }, { 14, 16, 18, 20, 22 }
};
using (KhivaArray xss = KhivaArray.Create(tss),
yss = KhivaArray.Create(tss2),
approximateEntropy = Features.CrossCovariance(xss, yss, false))
{
var result = approximateEntropy.GetData3D <float>();
var flatten = new float[result.Length];
Flatten3D(ref flatten, result);
for (var i = 0; i < 4; i++)
{
Assert.AreEqual(2.5, flatten[i * 5], Delta);
Assert.AreEqual(2.5, flatten[i * 5 + 1], Delta);
Assert.AreEqual(0.25, flatten[i * 5 + 2], Delta);
Assert.AreEqual(-1.25, flatten[i * 5 + 3], Delta);
Assert.AreEqual(-1.5, flatten[i * 5 + 4], Delta);
}
}
}
public void TestFriedrichCoefficients()
{
double[,] tss =
{
{ 0, 1, 2, 3, 4, 5 },
{ 0, 1, 2, 3, 4, 5 }
};
using (KhivaArray arr = KhivaArray.Create(tss), friedrichCoeff = Features.FriedrichCoefficients(arr, 4, 2))
{
var result = friedrichCoeff.GetData2D <double>();
double[,] expected =
{
{
-0.0009912563255056738, -0.0027067768387496471, -0.00015192681166809052,
0.10512571036815643, 0.89872437715530396
},
{
-0.0009912563255056738, -0.0027067768387496471, -0.00015192681166809052,
0.10512571036815643, 0.89872437715530396
}
};
for (var i = 0; i < result.GetLength(0); i++)
{
for (var j = 0; j < result.GetLength(1); j++)
{
Assert.AreEqual(expected[i, j], result[i, j], Delta);
}
}
}
}
public void TestFindBestNMotifsMirror()
{
float[] tss = { 10.1F, 11, 10.2F, 10.15F, 10.775F, 10.1F, 11, 10.2F };
using (var arr = KhivaArray.Create(tss))
{
var(pArr, iArr) = Matrix.StompSelfJoin(arr, 3);
using (pArr)
using (iArr)
{
var(distancesArr, indicesArr, subsequenceArr) = Matrix.FindBestNMotifs(pArr, iArr, 3, 2, true);
using (distancesArr)
using (indicesArr)
using (subsequenceArr)
{
var indices = indicesArr.GetData2D <uint>();
var subsequence = subsequenceArr.GetData2D <uint>();
Assert.AreEqual(new uint[, ] {
{ 0, 0 }
}, indices);
Assert.AreEqual(new uint[, ] {
{ 5, 3 }
}, subsequence);
}
}
}
}
public void TestStompSelfJoin()
{
float[,] tss =
{
{ 10, 10, 11, 11, 10, 11, 10, 10, 11, 11, 10, 11, 10, 10 },
{ 11, 10, 10, 11, 10, 11, 11, 10, 11, 11, 10, 10, 11, 10 }
};
using (var arr = KhivaArray.Create(tss))
{
var(p, i) = Matrix.StompSelfJoin(arr, 3);
using (p)
using (i)
{
float[] expectedIndex =
{ 6, 7, 8, 9, 10, 11, 0, 1, 2, 3, 4, 5, 9, 10, 11, 6, 7, 8, 3, 4, 5, 0, 1, 2 };
var pVal = p.GetData2D <float>();
var iVal = i.GetData2D <uint>();
for (var index = 0; index < 6; index++)
{
Assert.AreEqual(0.0, pVal[0, index], 1e-2);
Assert.AreEqual(expectedIndex[index], iVal[0, index]);
}
}
}
}
public void TestFindBestNMotifs()
{
float[] tss = { 10, 10, 10, 10, 10, 10, 9, 10, 10, 10, 10, 10, 11, 10, 9 };
float[] tss2 = { 10, 11, 10, 9 };
using (KhivaArray arr = KhivaArray.Create(tss), arr2 = KhivaArray.Create(tss2))
{
var(pArr, iArr) = Matrix.Stomp(arr, arr2, 3);
using (pArr)
using (iArr)
{
var(distancesArr, indicesArr, subsequenceArr) = Matrix.FindBestNMotifs(pArr, iArr, 3, 1);
using (distancesArr)
using (indicesArr)
using (subsequenceArr)
{
var indices = indicesArr.GetData1D <uint>();
var subsequence = subsequenceArr.GetData1D <uint>();
for (var i = 0; i < indices.Length; i++)
{
Assert.AreEqual(12, indices[i]);
Assert.AreEqual(1, subsequence[i]);
}
}
}
}
}
public void TestFindBestNDiscordsConsecutive()
{
float[] tss = { 10, 11, 10, 11, 10, 11, 10, 11, 10, 11, 10, 11, 10, 9.999F, 9.998F };
using (var arr = KhivaArray.Create(tss))
{
var(pArr, iArr) = Matrix.StompSelfJoin(arr, 3);
using (pArr)
using (iArr)
{
var(distancesArr, indicesArr, subsequenceArr) = Matrix.FindBestNDiscords(pArr, iArr, 3, 2, true);
using (distancesArr)
using (indicesArr)
using (subsequenceArr)
{
var subsequence = subsequenceArr.GetData1D <uint>();
Assert.AreEqual(12, subsequence[0]);
var travis = Environment.GetEnvironmentVariable("TRAVIS");
if (travis != null)
{
Assert.AreEqual(11, subsequence[1]);
}
else
{
Assert.AreNotEqual(11, subsequence[1]);
}
}
}
}
}
public void TestFindBestNDiscordsMirror()
{
float[] tss = { 10, 11, 10, 10, 11, 10 };
using (var arr = KhivaArray.Create(tss))
{
var(pArr, iArr) = Matrix.StompSelfJoin(arr, 3);
using (pArr)
using (iArr)
{
var(distancesArr, indicesArr, subsequenceArr) = Matrix.FindBestNDiscords(pArr, iArr, 3, 1, true);
using (distancesArr)
using (indicesArr)
using (subsequenceArr)
{
var indices = indicesArr.GetData1D <uint>();
var subsequence = subsequenceArr.GetData1D <uint>();
for (var i = 0; i < indices.Length; i++)
{
Assert.AreEqual(3, indices[i]);
Assert.AreEqual(1, subsequence[i]);
}
}
}
}
}
public void TestFindBestNDiscordsMultipleProfiles()
{
double[,] tss =
{
{ 11, 10, 11, 10, 11, 10, 11, 10, 11, 10, 11, 10, 11 },
{ 11, 10, 11, 10, 11, 10, 11, 10, 11, 10, 11, 10, 11 }
};
double[,] tss2 =
{
{ 9, 10.1, 10.2, 10.1, 10.2, 10.1, 10.2, 10.1, 10.2, 10.1, 10.2, 10.1, 9 },
{ 9, 10.1, 10.2, 10.1, 10.2, 10.1, 10.2, 10.1, 10.2, 10.1, 10.2, 10.1, 9 }
};
using (KhivaArray arr = KhivaArray.Create(tss), arr2 = KhivaArray.Create(tss2))
{
var(pArr, iArr) = Matrix.Stomp(arr, arr2, 3);
using (pArr)
using (iArr)
{
var(distancesArr, indicesArr, subsequenceArr) = Matrix.FindBestNDiscords(pArr, iArr, 3, 2);
using (distancesArr)
using (indicesArr)
using (subsequenceArr)
{
var subsequence = subsequenceArr.GetData3D <uint>();
Assert.AreEqual(new uint[, , ] {
{ { 0, 10 }, { 0, 10 } }, { { 0, 10 }, { 0, 10 } }
}, subsequence);
}
}
}
}
public void TestSquaredEuclidean()
{
int[,] tss = { { 0, 1, 2, 3 }, { 4, 5, 6, 7 }, { 8, 9, 10, 11 } };
int[,] expected = { { 0, 0, 0 }, { 64, 0, 0 }, { 256, 64, 0 } };
using (KhivaArray arr = KhivaArray.Create(tss), squaredEuclidean = Distances.SquaredEuclidean(arr))
{
var result = squaredEuclidean.GetData2D <int>();
Assert.AreEqual(expected, result);
}
}
public void TestHamming()
{
int[,] tss = { { 1, 1, 1, 1, 1 }, { 2, 2, 2, 2, 2 }, { 3, 3, 3, 3, 3 }, { 4, 4, 4, 4, 4 }, { 5, 5, 5, 5, 5 } };
int[,] expected = { { 0, 0, 0, 0, 0 }, { 5, 0, 0, 0, 0 }, { 5, 5, 0, 0, 0 }, { 5, 5, 5, 0, 0 }, { 5, 5, 5, 5, 0 } };
using (KhivaArray arr = KhivaArray.Create(tss), hamming = Distances.Hamming(arr))
{
var result = hamming.GetData2D <int>();
Assert.AreEqual(expected, result);
}
}
public void TestCountBellowMean()
{
float[,] tss = { { 0, 1, 2, 3, 4, 5 }, { 6, 7, 8, 9, 10, 11 } };
using (KhivaArray arr = KhivaArray.Create(tss), countBellowMean = Features.CountBelowMean(arr))
{
var result = countBellowMean.GetData2D <uint>();
Assert.AreEqual(3, result[0, 0], Delta);
Assert.AreEqual(3, result[1, 0], Delta);
}
}
public void TestGroupByDoubleKeyDoubleValueColumn()
{
float[,] tss = { { 0, 0, 0, 2, 2 }, { 2, 2, 2, 4, 4 }, { 0, 1, 2, 3, 4 }, { 1, 1, 1, 1, 1 } };
using (KhivaArray arr = KhivaArray.Create(tss), groupBy = Regularization.GroupBy(arr, 0, 2, 2))
{
float[,] expected = { { 1, 3.5F }, { 1, 1 } };
var result = groupBy.GetData2D <float>();
Assert.AreEqual(expected, result);
}
}
public void TestGroupBySingleColumn()
{
int[,] tss = { { 0, 1, 1, 2, 2, 3 }, { 0, 3, 3, 1, 1, 2 } };
using (KhivaArray arr = KhivaArray.Create(tss), groupBy = Regularization.GroupBy(arr, 0))
{
int[] expected = { 0, 3, 1, 2 };
var result = groupBy.GetData1D <int>();
Assert.AreEqual(expected, result);
}
}
public void TestC3()
{
float[,] tss = { { 0, 1, 2, 3, 4, 5 }, { 6, 7, 8, 9, 10, 11 } };
using (KhivaArray arr = KhivaArray.Create(tss), c3 = Features.C3(arr, 2))
{
var result = c3.GetData2D <float>();
Assert.AreEqual(7.5, result[0, 0]);
Assert.AreEqual(586.5, result[1, 0]);
}
}
public void TestEuclidean()
{
int[,] tss = { { 0, 1, 2, 3 }, { 4, 5, 6, 7 }, { 8, 9, 10, 11 } };
float[,] expected = { { 0, 0, 0 }, { 8, 0, 0 }, { 16, 8, 0 } };
using (KhivaArray arr = KhivaArray.Create(tss), euclidean = Distances.Euclidean(arr))
{
var result = euclidean.GetData2D <float>();
Assert.AreEqual(expected, result);
}
}
public void TestAbsEnergy()
{
var tss = new[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
using (KhivaArray arr = KhivaArray.Create(tss), absEnergy = Features.AbsEnergy(arr))
{
var result = absEnergy.GetData1D <int>();
Assert.AreEqual(385, result[0], Delta);
}
}
public void TestManhattan()
{
int[,] tss = { { 1, 1, 1, 1, 1 }, { 2, 2, 2, 2, 2 }, { 3, 3, 3, 3, 3 }, { 4, 4, 4, 4, 4 }, { 5, 5, 5, 5, 5 } };
int[,] expected =
{ { 0, 0, 0, 0, 0 }, { 5, 0, 0, 0, 0 }, { 10, 5, 0, 0, 0 }, { 15, 10, 5, 0, 0 }, { 20, 15, 10, 5, 0 } };
using (KhivaArray arr = KhivaArray.Create(tss), manhattan = Distances.Manhattan(arr))
{
var result = manhattan.GetData2D <int>();
Assert.AreEqual(expected, result);
}
}
public void TestLls()
{
float[,] tss = { { 4, 3 }, { -1, -2 } };
float[] tss2 = { 3, 1 };
using (KhivaArray a = KhivaArray.Create(tss), b = KhivaArray.Create(tss2), lls = LinAlg.Lls(a, b))
{
var result = lls.GetData2D <float>();
Assert.AreEqual(1, result[0, 0], Delta);
Assert.AreEqual(1, result[0, 1], Delta);
}
}
public void TestPercentageOfReoccurringValuesToAllValues()
{
float[,] tss = { { 1, 1, 2, 3, 4, 4, 5, 6 }, { 1, 2, 2, 3, 4, 5, 6, 7 } };
using (KhivaArray arr = KhivaArray.Create(tss),
percentage = Features.PercentageOfReoccurringValuesToAllValues(arr))
{
var result = percentage.GetData2D <float>();
Assert.AreEqual(4.0 / 8.0, result[0, 0], 1e-4);
Assert.AreEqual(2.0 / 8.0, result[1, 0], 1e-4);
}
}
public void TestPercentageOfReoccurringDatapointsToAllDatapoints()
{
float[,] tss = { { 3, 0, 0, 4, 0, 0, 13 }, { 3, 0, 0, 4, 0, 0, 13 } };
using (KhivaArray arr = KhivaArray.Create(tss),
percentage = Features.PercentageOfReoccurringDatapointsToAllDatapoints(arr))
{
var result = percentage.GetData2D <float>();
Assert.AreEqual(0.25, result[0, 0], 1e-4);
Assert.AreEqual(0.25, result[1, 0], 1e-4);
}
}
public void TestLinearMultipleTimeSeries()
{
double[,] tss =
{
{
0.24580423, 0.59642861, 0.35879163, 0.37891011, 0.02445137,
0.23830957, 0.38793433, 0.68054104, 0.83934083, 0.76073689
},
{
0.24580423, 0.59642861, 0.35879163, 0.37891011, 0.02445137,
0.23830957, 0.38793433, 0.68054104, 0.83934083, 0.76073689
}
};
double[,] tss2 =
{
{
0.2217416, 0.06344161, 0.77944375, 0.72174137, 0.19413884,
0.51146167, 0.06880307, 0.39414268, 0.98172767, 0.30490851
},
{
0.2217416, 0.06344161, 0.77944375, 0.72174137, 0.19413884,
0.51146167, 0.06880307, 0.39414268, 0.98172767, 0.30490851
}
};
using (KhivaArray arr = KhivaArray.Create(tss), arr2 = KhivaArray.Create(tss2))
{
var(slopeArr, interceptArr, rvalueArr, pvalueArr, stderrestArr) = Regression.Linear(arr, arr2);
using (slopeArr)
using (interceptArr)
using (rvalueArr)
using (pvalueArr)
using (stderrestArr)
{
var slope = slopeArr.GetData2D <double>();
var intercept = interceptArr.GetData2D <double>();
var rvalue = rvalueArr.GetData2D <double>();
var pvalue = pvalueArr.GetData2D <double>();
var stderrest = stderrestArr.GetData2D <double>();
for (var i = 0; i < slope.GetLength(0); i++)
{
for (var j = 0; j < slope.GetLength(1); j++)
{
Assert.AreEqual(0.344864266, slope[i, j], Delta);
Assert.AreEqual(0.268578232, intercept[i, j], Delta);
Assert.AreEqual(0.283552942, rvalue[i, j], Delta);
Assert.AreEqual(0.427239418, pvalue[i, j], Delta);
Assert.AreEqual(0.412351891, stderrest[i, j], Delta);
}
}
}
}
}
public void TestStdev()
{
double[,] tss = { { 0, 1, 2, 3, 4, 5 }, { 2, 2, 2, 20, 30, 25 } };
using (KhivaArray arr = KhivaArray.Create(tss), stdev = Statistics.SampleStdevStatistics(arr))
{
double[] expected = { 1.870828693, 12.988456413 };
var result = stdev.GetData2D <double>();
for (var i = 0; i < result.GetLength(0); i++)
{
Assert.AreEqual(expected[i], result[i, 0], 1e-2);
}
}
}
public void TestSkewness()
{
double[,] tss = { { 0, 1, 2, 3, 4, 5 }, { 2, 2, 2, 20, 30, 25 } };
using (KhivaArray arr = KhivaArray.Create(tss), skewness = Statistics.SkewnessStatistics(arr))
{
double[] expected = { 0.0, 0.236177069879499 };
var result = skewness.GetData2D <double>();
for (var i = 0; i < result.GetLength(0); i++)
{
Assert.AreEqual(expected[i], result[i, 0], 1e-2);
}
}
}
public void TestKurtosis()
{
double[,] tss = { { 0, 1, 2, 3, 4, 5 }, { 2, 2, 2, 20, 30, 25 } };
using (KhivaArray arr = KhivaArray.Create(tss), kurtosis = Statistics.KurtosisStatistics(arr))
{
double[] expected = { -1.2, -2.66226722 };
var result = kurtosis.GetData2D <double>();
for (var i = 0; i < result.GetLength(0); i++)
{
Assert.AreEqual(expected[i], result[i, 0], 1e-2);
}
}
}
public void TestCwtCoefficients()
{
double[,] tss = { { 0.1, 0.2, 0.3 }, { 0.1, 0.2, 0.3 } };
int[] width = { 1, 2, 3 };
using (KhivaArray arr = KhivaArray.Create(tss),
widthArr = KhivaArray.Create(width),
cwtCoeff = Features.CwtCoefficients(arr, widthArr, 2, 2))
{
var result = cwtCoeff.GetData2D <float>();
Assert.AreEqual(0.26517161726951599, result[0, 0], Delta);
Assert.AreEqual(0.26517161726951599, result[1, 0], Delta);
}
}