trainControl

From caret v4.20 by Max Kuhn

Control parameters for train

Control of printing and resampling for train

Keywords: utilities

Usage

trainControl(
             method = "boot", 
             number = ifelse(method == "cv", 10, 25), 
             verboseIter = TRUE, 
             returnData = TRUE, 
             returnResamp = "final",
             p = 0.75, 
             summaryFunction = defaultSummary,
             selectionFunction = "best",
             index = NULL,
             workers = 1,
             computeFunction = lapply,
             computeArgs = NULL)

Arguments

method: The resampling method: boot, cv, LOOCV, LGOCV (for repeated training/test splits), or oob (only for random forest, bagged trees, bagged earth, bagged flexible discriminant analysis,
number: Either the number of folds or number of resampling iterations
verboseIter: A logical for printing a training log.
returnData: A logical for saving the data
returnResamp: A character string indicating how much of the resampled summary metrics should be saved. Values can be ``final'', ``all'' or ``none''
p: For leave-group out cross-validation: the training percentage
summaryFunction: a function to compute performance metrics across resamples. The arguments to the function should be the same as those in defaultSummary.
selectionFunction: the function used to select the optimal tuning parameter. This can be a name of the function or the funciton itself. See best for details and other options.
index: a list with elements for each resampling iteration. Each list element is the sample rows used for training at that iteration.
workers: an integer that specifies how many machines/processors will be used
computeFunction: a function that is lapply or emulates lapply. It must have arguments X, FUN and .... computeFunction can be used to build models in parall
computeArgs: Extra arguments to pass into the ... slore in computeFunction. See the examples in link{train}.

Value

An echo of the parameters specified

Documentation reproduced from package caret, version 4.20, License: GPL-2

Community examples

RAVINDARMADISHETTY@GMAIL.COM at Jul 23, 2018 caret v6.0-80

I am getting below error while submitting a text x = trainControl(method = "repeatedcv", number = numbers, repeats = repeats, classProbs = TRUE, summaryFunction = twoClassSummary) Error: Please suggesrt Error in trainControl(method = "repeatedcv", number = numbers, repeats = repeats, : could not find function "trainControl"