public void TestSameDistance()
{
var context = new SimilarityContext();
context.AddSeeds(new Seed [] { GetSeed(s1, 1.0f) });
Assert.AreEqual(0f, context.Distance(Scms.FromBytes(Bytes(s1))).Average());
}
public void TestEmptyContext()
{
var context = new SimilarityContext();
Assert.IsTrue(context.IsEmpty);
Assert.AreEqual(float.MaxValue, context.Distance(null).Average());
}
public void TestDiscardedDistance()
{
// Test with different seed weight
var distance_s1_s2_discarded = 81.65736f;
var context = new SimilarityContext();
context.AddSeeds(new Seed [] { GetSeed(s1, SimilarityContext.DiscardedWeight) });
Assert.IsFalse(context.IsEmpty);
Assert.Less(Math.Abs(distance_s1_s2_discarded - context.Distance(Scms.FromBytes(Bytes(s2))).Average()), 0.1);
}
public void TestShuffledDistances()
{
var distance_s1_s2 = 27.21912f;
var context = new SimilarityContext();
context.AddSeeds(new Seed [] { GetSeed(s1, SimilarityContext.ShuffledWeight) });
Assert.IsFalse(context.IsEmpty);
Assert.Less(Math.Abs(distance_s1_s2 - context.Distance(Scms.FromBytes(Bytes(s2))).Average()), 0.1);
// Add the same seed w/ the same weight; make sure the average is the same
context.AddSeeds(new Seed [] { GetSeed(s1, SimilarityContext.ShuffledWeight) });
Assert.Less(Math.Abs(distance_s1_s2 - context.Distance(Scms.FromBytes(Bytes(s2))).Average()), 0.1);
}
