MapExpressionNodes      Common higher-order functions for transforming
                        R expressions
arithmeticFunctionSet   Default function- and constant factory sets for
                        Genetic Programming
arity                   Determine the number of arguments of a function
arity.primitive         Determine the number of arguments of a
                        primitive function
breed                   Breeding of GP individuals
buildingBlock           Support for GP buidling blocks
buildingBlockTag        Building block tags
commonSubexpressions    Similarity and Distance Measures for R
                        Functions and Expressions
crossover               Random crossover (recombination) of functions
                        and expressions
customDist              A 'dist' function that supports custom metrics
dataDrivenGeneticProgramming
                        Data-driven untyped standard genetic
                        programming
do.call.ignore.unused.arguments
                        A variant of do.call that ignores unused
                        arguments
embedDataFrame          Embed columns in a data frame
exprChildrenOrEmptyList
                        Return the Children of an Expression or the
                        Empty List if there are None
exprDepth               Complexity measures for R functions and
                        expressions
exprLabel               Return the "label" at the Root Node of an
                        Expression Tree
exprShapesOfDepth       Upper bounds for expression tree search space
                        sizes
exprToPlotmathExpr      Convert any expression to an expression that is
                        plottable by plotmath
extractAttributes       Extract a given attribute of all objects in a
                        list and tag that list with the list of
                        extracted attributes
first                   Functions for Lisp-like list processing
formatSeconds           Format time and data values into human-readable
                        character vectors
funcToIgraph            Visualization of functions and expressions as
                        trees
funcToPlotmathExpr      Convert a function to an expression plottable
                        by plotmath
functionSet             Functions for defining the search space for
                        Genetic Programming
functionVariablePresenceMap
                        Variable Presence Maps
geneticProgramming      Standard typed and untyped genetic programming
gridDesign              Create a regular grid design matrix
inputVariablesOfIndividual
                        Functions for analysing GP individuals
insertionSort           Sorting algorithms for vectors and lists
integerToLogicals       Tools for manipulating boolean functions
inversePermutation      Calculate the inverse of a permutation
is.sType                Check if an object is an sType
iterate                 Repeatedly apply a function
joinElites              Join elite lists
latinHypercubeDesign    Create a latin hypercube design (LHD)
mae                     Mean absolute error (MAE)
makeAgeFitnessComplexityParetoGpSearchHeuristic
                        Age Fitness Complexity Pareto GP Search
                        Heuristic for RGP
makeArchiveBasedParetoTournamentSearchHeuristic
                        Archive-based Pareto Tournament Search
                        Heuristic for RGP
makeClosure             Create a new R closure given a function body
                        expression and an argument list
makeCommaEvolutionStrategySearchHeuristic
                        Comma Evolution Strategy Search Heuristic for
                        RGP
makeEmptyRestartCondition
                        Evolution restart conditions
makeFunctionFitnessFunction
                        Create a fitness function from a reference
                        function of one variable
makeHierarchicalClusterFunction
                        Clustering Populations for Niching
makeLocalRestartStrategy
                        Evolution restart strategies
makeNaryFunctionFitnessFunction
                        Create a fitness function from a n-ary
                        reference function
makePopulation          Classes for populations of individuals
                        represented as functions
makeRegressionFitnessFunction
                        Create a fitness function for symbolic
                        regression
makeSeSymbolicFitnessFunction
                        Create a fitness function based on symbolic
                        squared error (SE)
makeStepsStopCondition
                        Evolution stop conditions
makeTinyGpSearchHeuristic
                        Tiny GP Search Heuristic for RGP
makeTournamentSelection
                        GP selection functions
mse                     Mean squared error (MSE)
multiNicheGeneticProgramming
                        Cluster-based multi-niche genetic programming
multiNicheSymbolicRegression
                        Symbolic regression via multi-niche standard
                        genetic programming
mutateFunc              Random mutation of functions and expressions
new.alist               Create a new function argument list from a list
                        or vector of strings
new.function            Create a new function stub
nmse                    Normalized mean squared error (NMSE)
nondeterministicRanking
                        Create a nondeterministic ranking
normalize               Normalize a vector into the interval [0, 1]
normalizedDesign        Create a normalized design matrix
orderByParetoCrowdingDistance
                        Rearrange points via Pareto-based rankings
orderByParetoMeasure    Rearrange points via an arbitrary Pareto-based
                        ranking
paretoFrontKneeIndex    Find the knee of a two dimensional pareto front
plotFunction3d          Plot a 2D function as a 3D surface
plotFunctions           Show an overlayed plot of multiple functions
plotParetoFront         Plot a GP Pareto Front
plotPopulationFitnessComplexity
                        Fitness/Complexity plot for populations
popfitness              Calculate the fitness value of each individual
                        in a population
predict.symbolicRegressionModel
                        Predict method for symbolic regression models
print.sType             Prints a sType and returns it invisible.
r_mae                   R version of Mean absolute error (MAE)
r_sse                   R version of Sum squared error (SSE)
r_ssse                  R version of Scaled sum squared error (sSSE)
randchild               Select random childs or subtrees of an
                        expression
randelt                 Choose a random element from a list or vector
randexprGrow            Creates an R expression by random growth
randexprTypedGrow       Creates an R expression by random growth
                        respecting type constraints
randfunc                Creates an R function with a random expression
                        as its body
randfuncTyped           Creates a well-typed R function with a random
                        expression as its body
randterminalTyped       Create a random terminal node
rangeTypeOfType         Return the range type if t is a function type,
                        otherwise just return t
rgp-package             The RGP package
rgpBenchmark            Utility functions for testing and benchmarking
                        the RGP system
rmse                    Root mean squared error (RMSE)
rsquared                Coefficient of determination (R^2)
sType                   Inference of sTypes
safeDivide              Some simple arithmetic and logic functions for
                        use in GP expressions
seSymbolic              Symbolic squared error (SE)
seSymbolicFunction      Symbolic squared error function (SE)
smse                    Scaled mean squared error (SMSE)
sortBy                  Sort a vector or list by the result of applying
                        a function
sortByRange             Tabulate a list of functions or input variables
                        by the range part of their sTypes
sortByRanking           Sort a vector or list via a given ranking
sortByType              Tabulate a list of functions or input variables
                        by their sTypes
splitList               Splitting and grouping of lists
sse                     Sum squared error (SSE)
ssse                    Scaled sum squared error (sSSE)
st                      Type constructors for types in the Rsymbolic
                        type system
subDataFrame            Select a continuous subframe of a data frame
subexpressions          Functions for decomposing and recombining R
                        expressions
summary.geneticProgrammingResult
                        Summary reports of genetic programming run
                        result objects
symbolicRegression      Symbolic regression via untyped standard
                        genetic programming
tabulateFunction        Tabulate an n-ary function
toName                  Functions for handling R symbols / names
