distance

Type Members

1. case class Cosine[M, D]()(implicit evidence$1: NRoot[D], evidence$2: Field[D], ips: InnerProductSpace[M, D]) extends Product with Serializable

   

   Cosine

   Cosine

   http://en.wikipedia.org/wiki/Cosine_similarity

   n = num columns in row vectors

   http://math.stackexchange.com/questions/102924/cosine-similarity-distance-and-triangle-equation

   Also see:

   Metric Distances Derived from Cosine Similarity and Pearson and Spearman Correlations http://arxiv.org/pdf/1208.3145.pdf

   one distance in terms of similarity:

   1d - 2d *abs(acos(similarity(u, v)) / Pi)

2. case class Euclidean[M, D]()(implicit evidence$1: AdditiveAbGroup[M], evidence$2: NRoot[D], ips: InnerProductSpace[M, D]) extends MetricSpace[M, D] with Product with Serializable

   

   Euclidean space

   Euclidean space

   http://en.wikipedia.org/wiki/Euclidean_space

3. case class Manhattan[M, R, C, D]()(implicit la: LinearAlgebra[M, R, C, D], subSpace: MetricSpace[D, D], add: AdditiveMonoid[D]) extends MetricSpace[M, D] with Product with Serializable