functionVariablePresenceMap

populationVariablePresenceMap

A R function to return a variable presence map for.

A RGP population to return a variable presence map for.


Counts the number of input variables (formal arguments) present in the
body of a individual function. Applied to a population of individuals,
this information is useful to identify driving variables in a modelling
task.
<code>functionVariablePresenceMap</code> returns a (one row) variable
presence map for a function, <code>populationVariablePresenceMap</code>
returns a variable presence map for a population of RGP individuals
(a list of R functions).


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.

functionVariablePresenceMap: Variable Presence Maps

Description

Usage

Arguments

Value