R: The Q_{NX}(K) criterion

Q_NX {coRanking} | R Documentation

## The Q_{NX}(K) criterion

### Description

A curve indicating the percentage of points that are mild in- and extrusions or keep their rank.

### Usage

    Q_NX(Q)

### Arguments

`Q` | a co-ranking matrix

### Details

Q_{NX}(K) = \frac{1}{KN} ∑_{k=1}^{K}∑_{l=1}^{K}Q_{kl}

### Value

A vector with the values for Q_NX(K)

### Author(s)

Guido Kraemer

### References

Lueks, W., Mokbel, B., Biehl, M., & Hammer, B. (2011). How to Evaluate Dimensionality Reduction? - Improving the Co-ranking Matrix. ArXiv:1110.3917 [Cs]. http://arxiv.org/abs/1110.3917

[Package coRanking version 0.2.2 Index]