public void RemoveDecreasesSize()
{
var storage = new MdnnDoubleSample(Variables);
storage.Remove(0);
Assert.AreEqual(Variables - 1, storage.Variables);
}
public void RemoveIndex0ShiftsAll()
{
var storage = new MdnnDoubleSample(Values);
storage.Remove(0);
Assert.AreEqual(Values[1], storage[0]);
}
public void AddIncreasesSize()
{
var storage = new MdnnDoubleSample(Variables);
storage.Add(0);
Assert.AreEqual(Variables + 1, storage.Variables);
}
public void GetMahalanobisDistanceComputesCorrectly(double[] sampleValues, double expectedMd)
{
var space = new MdnnDoubleSpace(GetGoodSpaceData());
var sample = new MdnnDoubleSample(sampleValues);
var result = GetMahalanobisDistance(space, sample);
Assert.IsTrue(Math.Abs(result - expectedMd) < 0.1);
}
public void RemoveFromMiddleShiftsContents()
{
const int removeIndex = 3;
var storage = new MdnnDoubleSample(Values);
storage.Remove(removeIndex);
Assert.AreEqual(Values[removeIndex + 1], storage[removeIndex]);
}
public void AddToIndex0ShiftsContents()
{
var storage = new MdnnDoubleSample(Values);
storage.Add(0, NewValue);
Assert.AreEqual(NewValue, storage[0]);
Assert.AreEqual(Values[0], storage[1]);
}
public void CanAccessElementsViaSquareBrackets()
{
var storage = new MdnnDoubleSample(Variables)
{
[0] = Variables
};
Assert.AreEqual(Variables, storage[0]);
}
public void AddToMiddleShiftsFollowingContents()
{
const int insertIndex = 3;
var storage = new MdnnDoubleSample(Values);
storage.Add(insertIndex, NewValue);
Assert.AreEqual(NewValue, storage[insertIndex]);
Assert.AreEqual(Values[insertIndex], storage[insertIndex + 1]);
}
public void RemoveFromEndPreservesColumns()
{
const int removeIndex = 4;
var storage = new MdnnDoubleSample(Values);
storage.Remove(removeIndex);
Assert.AreEqual(Values[0], storage[0]);
Assert.AreEqual(Values[removeIndex - 1], storage[removeIndex - 1]);
}
public void CalculateZCorrectlyDeterminesZeroZ()
{
var matrix = new double[, ] {
{ 0, 0, 0 }, { 0, 0, 0 }
};
var space = new MdnnDoubleSpace(matrix);
var vector = new double[] { 0, 0, 0 };
var sample = new MdnnDoubleSample(vector);
var z = CalculateZ(space, sample);
CollectionAssert.AreEqual(vector, z.Storage);
}
public void MultiplyGetsCorrectResultForSpaceAndSample()
{
var values1 = new double[, ]
{
{ 1, -1, 2 },
{ 0, -3, 1 }
};
var space = new MdnnDoubleSpace(values1);
var values2 = new double[] { 2, 1 };
var sample = new MdnnDoubleSample(values2);
var result = new MdnnDoubleMtsMathProvider().Multiply(sample, space);
var expected = new double[] { 2, -5, 5 };
CollectionAssert.AreEqual(expected, result.Storage);
}
public void CanConstructUsingArray()
{
var storage = new MdnnDoubleSample(Values);
Assert.AreEqual(Variables, storage.Variables);
}
public void CanGetVariableCount()
{
var storage = new MdnnDoubleSample(Variables);
Assert.AreEqual(Variables, storage.Variables);
}
