randchild

randsubtree

The expression to select random childs or subtrees from.

expr

The probability for <code>randsubtree</code> to select a certain subtree instead
of searching further via an recursive call.

subtreeprob


<code>randchild</code> returns a uniformly random direct child of an expression.
<code>randsubtree</code> returns a uniformly random subtree of an expression. Note that this subtree
must not be a direct child.


RGP is a simple modular Genetic Programming (GP) system build in
pure R. In addition to general GP tasks, the system supports Symbolic
Regression by GP through the familiar R model formula interface. GP
individuals are represented as R expressions, an (optional) type system
enables domain-specific function sets containing functions of diverse
domain- and range types. A basic set of genetic operators for variation
(mutation and crossover) and selection is provided.

randchild: Select random childs or subtrees of an expression

Description

Usage

Arguments