e/Locality preserving hashing

Information
has gloss	eng: In computer science, a locality preserving hashing is a hash function f that maps a point or points in a multidimensional coordinate space to a scalar value, such that if we have three points A, B and C such that :\|A-B\| < \|B-C\| \Rightarrow \|f(A) - f(B)\| < \|f(B) - f(C)\|. \,
lexicalization	eng: Locality preserving hashing
instance of	c/Hash functions