DistanceTo should be called SimilarityTo

[pengowray]

Hi,

I tried substituting the vector operations in Word2vec.Tools with those in MathNet.Numerics, and got some weird results. It seems the "distances" used by Word2vec.Tools should be called "similarities".

Cosine similarity:

similarity = 1 − distance

for similarities: 1 = similar, 0 = not similar

for distances: 0 = close, 1 = distant

Hope that makes sense.

For reference:

• Math.NET Numerics Cosine Distance function