Evolutionary-strategy result objects

Objects of class ahres.results are returned by ahres(). They store the fitted parameters and the main diagnostics produced by the AHR-ES optimiser.

coef() returns the fitted parameter values stored in an ahres.results object.

plot() is currently a placeholder method for ahres.results objects. No graphical summary is produced at present.

Usage

# S3 method for class 'ahres.results'
print(x, short = FALSE, ...)

# S3 method for class 'ahres.results'
coef(object, ...)

# S3 method for class 'ahres.results'
plot(x, ...)

# S3 method for class 'ahres.results'
summary(object, ...)

# S3 method for class 'summary.ahres.results'
print(x, ...)

Format

A list, usually with the following components:

par

Best parameter values found by the AHR-ES algorithm.

value

Aggregated objective-function value at par.

counts

Named integer vector giving the number of function and gradient evaluations recorded by the optimiser.

convergence

Integer convergence code. 0 indicates that the stopping criterion was reached before the generation limit; 1 indicates that the maximum number of generations or function evaluations was reached.

message

Character string describing the stopping condition.

generations

Number of generations completed.

partial

Optional vector of partial objective-function values, present when the objective function returns multiple components.

trace

Optional tracing information collected during the run.

active

Information on which parameters were active in the optimisation, as stored by ahres().

Arguments

x

An ahres.results object, or a summary.ahres.results object for print.summary.ahres.results().

short

Logical. If TRUE, print a compact summary without listing the full parameter vector.

...

Additional arguments passed to the underlying method.

object

An ahres.results object.

Value

coef.ahres.results() returns the fitted parameter vector.

plot.ahres.results() returns NULL, invisibly.

summary.ahres.results() returns an object of class summary.ahres.results.

Details

These objects are specific to the AHR-ES optimisation workflow. They contain the final parameter vector, the aggregated objective value, convergence and iteration information, and, when relevant, partial objective values and tracing information.

The main accessors are print(), summary(), and coef(). A plot() method is currently exported as a placeholder but does not yet produce a graphical summary.

See also

ahres(), summary(), coef()