plot.ga_parsimony-method {GAparsimony}

Plot of GA evolution of elitists

Description

The plot method for ga_parsimony-class objects gives a evolution plot of the validation and testing errors, and the number of model features selected of elitists.

Usage

## S4 method for signature 'ga_parsimony'
plot(x, general_cex = 0.7, min_ylim=NULL, max_ylim=NULL, 
			min_iter=NULL, max_iter=NULL, 
			main_label="Boxplot cost evolution", 
			iter_auto_ylim=3, steps=5, pos_cost_num=-3.1,
			pos_feat_num=-1.7, digits_plot=4, width_plot=12,
			height_plot=6, window=TRUE, ...)

Arguments

x

An object of class "ga_parsimony".

general_cex

Main text scale.

min_ylim

Min limit on the y-axis.

max_ylim

Max limit on the y-axis.

min_iter

Min GA iteration to visualize.

max_iter

Max GA iteration to visualize.

main_label

Main plot title.

iter_auto_ylim

If it is not NULL, GA iteration to choose the min limit of y-axis.

steps

Number of divisions in y-axis.

pos_cost_num

Relative position of numbers in cost axis.

pos_feat_num

Relative position of numbers in feature axis.

digits_plot

Number of digits to visualize.

width_plot

Figure width in inches.

height_plot

Figure height in inches.

window

If TRUE shows a new window.

...

Further arguments, currently not used.

Details

Plot method shows the evolution of validation and testing errors, and the number of model features selected of elitists. White and grey box-plots represent validation and testing errors of elitists evolution, respectively. Continuous and dashed-dotted lines show the validation and testing error of the best individual for each generation, respectively. Finally, the shaded area delimits the maximum and minimum number of features, and the dashed line, the number fo features of the best individual.

Value

The method invisibly return a list with the elistists validation error, testing error and model complexity in the whole GA process.

Author(s)

Francisco Javier Martinez de Pison. [e-mail]. EDMANS Group. https://edmans.webs.com/

See Also

ga_parsimony, ga_parsimony-class.