summary.FFTrees: Summarize an 'FFTrees' object

In FFTrees: Generate, Visualise, and Evaluate Fast-and-Frugal Decision Trees

Summarize an FFTrees object

Description

summary.FFTrees summarizes key contents of an FFTrees object.

Usage

## S3 method for class 'FFTrees'
summary(object, tree = NULL, ...)

Arguments

object	An FFTrees object.
tree	The tree to summarize (as an integer, but may be a vector). If tree = NULL (as per default) or exceeding the possible range 1:object$trees$n, information on all trees in object is returned.
...	Additional arguments (currently ignored).

Details

Given an FFTrees object x, summary.FFTrees selects key parameters from x$params and provides the definitions and performance statistics for tree from x$trees. Inspect and query x for additional details.

summary.FFTrees returns an invisible list containing two elements:

1. definitions and corresponding performance measures of trees;

2. stats on decision frequencies, derived probabilities, and costs (separated by train and test).

A header prints descriptive information of the FFTrees object (to the console): Its main title, number of trees (object$trees$n), and the name of the criterion variable (object$criterion_name).

Per default, information on all available trees is shown and returned. Specifying tree filters the output list elements for the corresponding tree(s). When only a single tree is specified, the printed header includes a verbal description of the corresponding tree.

While summary.FFTrees provides key details about the specified tree(s), the individual decisions (stored in object$trees$decisions) are not shown or returned.

Value

An invisible list with elements containing the definitions and performance stats of the FFT(s) specified by tree(s).

See Also

print.FFTrees for printing FFTs; plot.FFTrees for plotting FFTs; inwords for obtaining a verbal description of FFTs; FFTrees for creating FFTs from and applying them to data.

FFTrees documentation built on June 7, 2023, 5:56 p.m.