LCMC {coRanking}

The local continuity meta-criterion

Description

Calculate the local continuity meta-criterion from a co-ranking matrix.

Usage

LCMC(Q, K = 1:nrow(Q))

Arguments

Q

a co-ranking matrix

K

vector of integers describing neighborhood size

Details

The local continuity meta-criterion (Chen and Buja, 2006) is defined as

LCMC = \frac{K}{1-N} + \frac{1}{NK} \sum_{(k,l)\in U L_K} q_{kl}

Higher values mean a better performance of the dimensionality reduction.

Value

A number, the local continuity meta-criterion

Author(s)

Guido Kraemer