Plot hyperparameter validation path. Automated plotting method for
HyperParsEffectData object. Useful for determining the importance
or effect of a particular hyperparameter on some performance measure and/or
optimizer.
plotHyperParsEffect(hyperpars.effect.data, x = NULL, y = NULL, z = NULL,
plot.type = "scatter", loess.smooth = FALSE, facet = NULL,
global.only = TRUE, interpolate = NULL, show.experiments = FALSE,
show.interpolated = FALSE, nested.agg = mean, partial.dep.learn = NULL)(HyperParsEffectData)
Result of generateHyperParsEffectData
(character(1))
Specify what should be plotted on the x axis. Must be a column from
HyperParsEffectData$data. For partial dependence, this is assumed to
be a hyperparameter.
(character(1))
Specify what should be plotted on the y axis. Must be a column from
HyperParsEffectData$data
(character(1))
Specify what should be used as the extra axis for a particular geom. This
could be for the fill on a heatmap or color aesthetic for a line. Must be a
column from HyperParsEffectData$data. Default is NULL.
(character(1))
Specify the type of plot: “scatter” for a scatterplot, “heatmap” for a
heatmap, “line” for a scatterplot with a connecting line, or “contour” for a
contour plot layered ontop of a heatmap.
Default is “scatter”.
(logical(1))
If TRUE, will add loess smoothing line to plots where possible. Note that
this is probably only useful when plot.type is set to either
“scatter” or “line”. Must be a column from
HyperParsEffectData$data. Not used with partial dependence.
Default is FALSE.
(character(1))
Specify what should be used as the facet axis for a particular geom. When
using nested cross validation, set this to “nested_cv_run” to obtain a facet
for each outer loop. Must be a column from HyperParsEffectData$data
Default is NULL.
(logical(1))
If TRUE, will only plot the current global optima when setting
x = "iteration" and y as a performance measure from
HyperParsEffectData$measures. Set this to FALSE to always plot the
performance of every iteration, even if it is not an improvement. Not used
with partial dependence.
Default is TRUE.
(Learner | character(1))
If not NULL, will interpolate non-complete grids in order to visualize a more
complete path. Only meaningful when attempting to plot a heatmap or contour.
This will fill in “empty” cells in the heatmap or contour plot. Note that
cases of irregular hyperparameter paths, you will most likely need to use
this to have a meaningful visualization. Accepts either a regression Learner
object or the learner as a string for interpolation. This cannot be used with partial
dependence.
Default is NULL.
(logical(1))
If TRUE, will overlay the plot with points indicating where an experiment
ran. This is only useful when creating a heatmap or contour plot with
interpolation so that you can see which points were actually on the
original path. Note: if any learner crashes occurred within the path, this
will become TRUE. Not used with partial dependence.
Default is FALSE.
(logical(1))
If TRUE, will overlay the plot with points indicating where interpolation
ran. This is only useful when creating a heatmap or contour plot with
interpolation so that you can see which points were interpolated. Not used
with partial dependence.
Default is FALSE.
(function)
The function used to aggregate nested cross validation runs when plotting 2
hyperparameters. This is also used for nested aggregation in partial
dependence.
Default is mean.
(Learner | character(1))
The regression learner used to learn partial dependence. Must be specified if
“partial.dep” is set to TRUE in
generateHyperParsEffectData. Accepts either a Learner
object or the learner as a string for learning partial dependence.
Default is NULL.
ggplot2 plot object.
# NOT RUN {
# see generateHyperParsEffectData
# }
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