ncut_b: Location of Minimum Normalised Cut Hyperplane

In DavidHofmeyr/PPCI: Projection Pursuit for Cluster Identification

Description

The value of b which minimises the normalised cut across the hyperplane H(v, b) = [x : v'x = b]. If v is a locally optimal solution for the projection index f_ncut then H(v, b) is a locally optimal hyperplane.

Usage

ncut_b(v, X, P)

Arguments

v	a numeric vector of length ncol(X)
X	a numeric matrix (num_data x num_dimensions) to be projected on v
P	a list of parameters including (at least) $s (positive numeric scaling parameter), $nmin (positive integer minimum cluster size).

Value

the value of b given in the description.

DavidHofmeyr/PPCI documentation built on March 9, 2020, 5:05 p.m.