write.lexstats {UCS} | R Documentation |

## Write Data Files for Goodness-of-Fit Evaluation of LNRE Model (zm, fzm)

### Description

Creates three data files in `lexstats`

format, which can be used
to compare and LNRE model with other models from the `lexstats`

package and evaluate its goodness-of-fit by a multivariate
chi-squared test (Baayen, 2001, Sec. 3.3), using the `lnreChi2`

program (Baayen, 2001).

### Usage

write.lexstats(model, file)

### Arguments

`model` |
an object of class `"zm"` or `"fzm"` ,
representing a Zipf-Mandelbrot (ZM) or finite Zipf-Mandelbrot (fZM)
LNRE model. The object must include observed word frequency data
(in components `N` , `V` , and `spc` ), usually
because the model parameters have been estimated from the observed
frequency spectrum. |

`file` |
a character string giving the basename of the files that
will be created |

### Details

This functions creates files in `lexstats`

format with the
extensions `.spc`

, `.sp2`

, and `.ev2`

, which are
required by the `lnreChi2`

tool (Baayen, 2001, 270).

In addition, the basename `file`

is extended with the string
`"_bZM"`

(for a ZM model) or `"_bfZM"`

(for a fZM model),
so that the `lnreChi2`

tool can correctly identify the number of
degrees of freedom (reduced by two estimated parameters for the ZM
model, and three estimated parameters for the fZM model).

### Value

The full basename of the created files (obtained by adding a
model-specific suffix to the `file`

parameter).

### Note

The combination of `write.lexstats`

and the external
`lnreChi2`

program to evaluate the goodness-of-fit of a LNRE
model has been
superseded by the built-in `lnre.goodness.of.fit`

function (in the `lexstats`

module). This function implements
the multivariate chi-squared test as described by Baayen (2001,
Sec. 3.3) in **R** without relying on external software.

### References

Baayen, R. Harald (2001). *Word Frequency Distributions.* Kluwer,
Dordrecht.

### See Also

`zm`

, `fzm`

, `EV`

,
`EVm`

, `lnre.goodness.of.fit`

[Package

*UCS* version 0.5

Index]