ResamplingRepeatedSpCVCoords: (sperrorest) Repeated coordinate-based k-means clustering

Description Details mlr3spatiotempcv notes Super class Active bindings Methods References Examples

Description

partition_cv creates a represampling object for length(repetition)-repeated nfold-fold cross-validation.

Details

This function does not actually perform a cross-validation or partition the data set itself; it simply creates a data structure containing the indices of training and test samples.

mlr3spatiotempcv notes

The 'Description' and 'Details' fields are inherited from the respective upstream function.

For a list of available arguments, please see sperrorest::partition_cv.

Super class

mlr3::Resampling -> ResamplingRepeatedSpCVCoords

Active bindings

iters

integer(1)
Returns the number of resampling iterations, depending on the values stored in the param_set.

Methods

Public methods

Inherited methods

Method new()

Create an "coordinate-based" repeated resampling instance.

For a list of available arguments, please see sperrorest::partition_cv.

Usage
ResamplingRepeatedSpCVCoords$new(id = "repeated_spcv_coords")
Arguments
id

character(1)
Identifier for the resampling strategy.


Method folds()

Translates iteration numbers to fold number.

Usage
ResamplingRepeatedSpCVCoords$folds(iters)
Arguments
iters

integer()
Iteration number.


Method repeats()

Translates iteration numbers to repetition number.

Usage
ResamplingRepeatedSpCVCoords$repeats(iters)
Arguments
iters

integer()
Iteration number.


Method instantiate()

Materializes fixed training and test splits for a given task.

Usage
ResamplingRepeatedSpCVCoords$instantiate(task)
Arguments
task

Task
A task to instantiate.


Method clone()

The objects of this class are cloneable with this method.

Usage
ResamplingRepeatedSpCVCoords$clone(deep = FALSE)
Arguments
deep

Whether to make a deep clone.

References

Brenning A (2012). “Spatial cross-validation and bootstrap for the assessment of prediction rules in remote sensing: The R package sperrorest.” In 2012 IEEE International Geoscience and Remote Sensing Symposium. doi: 10.1109/igarss.2012.6352393.

Examples

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library(mlr3)
task = tsk("diplodia")

# Instantiate Resampling
rrcv = rsmp("repeated_spcv_coords", folds = 3, repeats = 5)
rrcv$instantiate(task)

# Individual sets:
rrcv$iters
rrcv$folds(1:6)
rrcv$repeats(1:6)

# Individual sets:
rrcv$train_set(1)
rrcv$test_set(1)
intersect(rrcv$train_set(1), rrcv$test_set(1))

# Internal storage:
rrcv$instance # table

mlr-org/mlr3spatiotempcv documentation built on May 4, 2021, 9:44 a.m.