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Threefold definition is - having three parts or members: triple. How to use threefold in a sentence.
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WebAdvisor
K-Folds cross-validator Scrutiny 8 2 49.
Provides train/test indices to split data in train/test sets. Splitdataset into k consecutive folds (without shuffling by default).
Each fold is then used once as a validation while the k - 1 remainingfolds form the training set.
Read more in the User Guide.
Number of folds. Must be at least 2.
Changed in version 0.22: n_splits default value changed from 3 to 5.
Whether to shuffle the data before splitting into batches.Note that the samples within each split will not be shuffled.
When shuffle is True, random_state affects the ordering of theindices, which controls the randomness of each fold. Otherwise, thisparameter has no effect.Pass an int for reproducible output across multiple function calls.See Glossary.
See also
Takes group information into account to avoid building folds with imbalanced class distributions (for binary or multiclass classification tasks).
K-fold iterator variant with non-overlapping groups.
Repeats K-Fold n times.
Photoshop cc 2016 mac. Notes
The first n_samples%n_splits folds have sizen_samples//n_splits+1, other folds have sizen_samples//n_splits, where n_samples is the number of samples.
Randomized CV splitters may return different results for each call ofsplit. You can make the results identical by setting random_stateto an integer.
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Methods
get_n_splits([X, y, groups]) | Returns the number of splitting iterations in the cross-validator |
split(X[, y, groups]) | Generate indices to split data into training and test set. |
Initialize self. See help(type(self)) for accurate signature.
Returns the number of splitting iterations in the cross-validator
Always ignored, exists for compatibility.
Always ignored, exists for compatibility.
Always ignored, exists for compatibility.
Returns the number of splitting iterations in the cross-validator.
Generate indices to split data into training and test set.
Training data, where n_samples is the number of samplesand n_features is the number of features.
The target variable for supervised learning problems.
Group labels for the samples used while splitting the dataset intotrain/test set.
The training set indices for that split.
The testing set indices for that split.
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