R: Fit Extensible Trees.

extree_fit {partykit} | R Documentation

## Fit Extensible Trees.

### Description

Basic infrastructure for fitting extensible trees.

### Usage

    extree_fit(data, trafo, converged, selectfun = ctrl$selectfun, splitfun = ctrl$splitfun,
               svselectfun = ctrl$svselectfun, svsplitfun = ctrl$svsplitfun, partyvars,
               subset, weights, ctrl, doFit = TRUE)

### Arguments

`data` | an object of class `extree_data`, see `extree_data`.
`trafo` | a function with arguments `subset`, `weights`, `info`, `estfun` and `object`.
`converged` | a function with arguments `subset`, `weights`.
`selectfun` | an optional function for selecting variables.
`splitfun` | an optional function for selecting splits.
`svselectfun` | an optional function for selecting surrogate variables.
`svsplitfun` | an optional function for selecting surrogate splits.
`partyvars` | a numeric vector assigning a weight to each partitioning variable (`z` in `extree_data`.
`subset` | a sorted integer vector describing a subset.
`weights` | an optional vector of weights.
`ctrl` | control arguments.
`doFit` | a logical indicating if the tree shall be grown (`TRUE`) or not `FALSE`.

### Details

This internal functionality will be the basis of implementations of other tree algorithms in future versions. Currently, only `ctree` relies on this function.

### Value

An object of class `partynode`.

[Package partykit version 1.2-7 Index]