- NAME
- VERSION
- DESCRIPTION
- NAME
- VERSION
- ATTRIBUTES
- SEE ALSO
- AUTHOR
- COPYRIGHT AND LICENSE
- AUTHOR
- COPYRIGHT AND LICENSE

# NAME

Math::LOESS::Model - Math::LOESS model configurations

# VERSION

version 0.0001

# DESCRIPTION

You normally don't need to construct object of this class yourself. Instead you get the object from an Math::LOESS object.

# NAME

Math::LOESS::Model - Math::LOESS model configurations

# VERSION

version 0.0000_02

# ATTRIBUTES

## span

The parameter controls the degree of smoothing. Default is 0.75.

For `span`

< 1, the neighbourhood used for the fit includes proportion `span`

of the points, and these have tricubic weighting (proportional to `(1 - (dist/maxdist)^3)^3)`

. For `span`

> 1, all points are used, with the "maximum distance" assumed to be `span^(1/p)`

times the actual maximum distance for p explanatory variables.

## degree

The degree of the polynomials to be used, normally 1 or 2. Default is 2.

## parametric

Should any terms be fitted globally rather than locally? Default is false. Terms can be specified by name, number or as a logical vector of the same length as the number of predictors.

## drop_square

For fits with more than one predictor and degree = 2, should the quadratic term be dropped for particular predictors? Default is false. Terms are specified in the same way as for parametric.

## normalize

Should the predictors be normalized to a common scale if there is more than one? The normalization used is to set the 10% trimmed standard deviation to one. Set to false for spatial coordinate predictors and others known to be on a common scale.

## family

If `"gaussian"`

fitting is by least-squares, and if `"symmetric"`

a re-descending M estimator is used with Tukey's biweight function.

# SEE ALSO

# AUTHOR

Stephan Loyd <sloyd@cpan.org>

# COPYRIGHT AND LICENSE

This software is copyright (c) 2019 by Stephan Loyd.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

# AUTHOR

Stephan Loyd <sloyd@cpan.org>

# COPYRIGHT AND LICENSE

This software is copyright (c) 2019 by Stephan Loyd.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.