Plot selectboost object

Plot a selectboostboost object.

# S3 method for selectboost
plot(
  x,
  verbose = FALSE,
  prop.level = 0.95,
  conf.int.level = 0.95,
  conf.threshold = 0.95,
  ...
)

Arguments

x: Numerical matrix. Result of selectboost (autoboost, fastboost, ...).
verbose: Boolean. Defaults to FALSE.
prop.level: Numeric value. Used to compute the proportion of selection is greater than prop.level. Defaults to .95.
conf.int.level: Numeric value. Confidence level for confidence intervals on estimated proportions of selection. Defaults to .95.
conf.threshold: Numeric value. Used to compute the number of steps (c0) for which the proportion of selection remains greater than conf.threshold. Defaults to .95.
...: . Passed to the plotting functions.

Value

An invisible list.

Details

plot.selectboost returns an invisible list and creates four graphics. Two plots the proportion of selection with respect to c0 (by step or according to real scale). On the third graph, no bar means a proportion of selection less than prop.level. Confidence intervals are computed at the conf.int.level level. Barplot of the confidence index (1-min(c0, such that proportion|c0>conf.threshold)).

References

selectBoost: a general algorithm to enhance the performance of variable selection methods in correlated datasets, Frédéric Bertrand, Ismaïl Aouadi, Nicolas Jung, Raphael Carapito, Laurent Vallat, Seiamak Bahram, Myriam Maumy-Bertrand, Bioinformatics, 2020. doi:10.1093/bioinformatics/btaa855

Author

Frederic Bertrand, frederic.bertrand@utt.fr

Examples

set.seed(314)
xran=matrix(rnorm(75),15,5)
ybin=sample(0:1,15,replace=TRUE)
yran=rnorm(15)
layout(matrix(1:4,2,2))

data(autoboost.res.x)
plot(autoboost.res.x)


data(autoboost.res.x2)
plot(autoboost.res.x2)
#> Warning: default 'pch' is smaller than number of columns and hence recycled
#> Warning: default 'pch' is smaller than number of columns and hence recycled