class MeanAngle extends Euclidean
MeanAngle computes the unit vector with angle the average of all the given vectors.
The purpose is to compute a vector M such that
sum(cosine_similarity(M,x_i)) is maximized
Methods
| mixed |
getCentroid(array $docs, array $choose = array())
Parse the provided docs and create a doc that given a metric of distance is the centroid of the provided docs. |
Details
at line 30
public mixed
getCentroid(array $docs, array $choose = array())
Parse the provided docs and create a doc that given a metric of distance is the centroid of the provided docs.
The second array is to choose some of the provided docs to
compute the centroid.