R: Generation of the tuning constant for regression fixed point...

can {fpc} | R Documentation

## Generation of the tuning constant for regression fixed point clusters

### Description

Generates tuning constants `ca` for `fixreg` dependent on the number of points and variables of the dataset.

Only thought for use in `fixreg`.

### Usage

    can(n, p)

### Arguments

`n` | positive integer. Number of points.
`p` | positive integer. Number of independent variables.

### Details

The formula is 3+33/(n*2^{-(p-1)/2})^{1/3}+2900000/(n*2^{-(p-1)/2})^3. For justification cf. Hennig (2002).

### Value

A number.

### Author(s)

Christian Hennig c.hennig@ucl.ac.uk http://www.homepages.ucl.ac.uk/~ucakche/

### References

Hennig, C. (2002) Fixed point clusters for linear regression: computation and comparison, Journal of Classification 19, 249-276.

### See Also

`fixreg`

### Examples

      can(429,3)

[Package fpc version 2.1-10 Index]