public void TestNorm()
{
var instance = new SparseIntegerVector(new[] { 0, 0, 2 });
var result = instance.Norm();
Assert.Equal(expected: 2.0, actual: result);
}
public void TestCosineSimilarity()
{
var other = new SparseIntegerVector(new[] { 0, 1, 2, 3 });
var instance = new SparseIntegerVector(new[] { 1, 2, 0, 0 });
var expectedResult = instance.DotProduct(other) / (instance.Norm() * other.Norm());
var result = instance.CosineSimilarity(other);
Assert.Equal(expected: expectedResult, actual: result);
}