breeze.data

Datasets

object Datasets

Provides useful utilties for dealing with datasets that have a defined order.

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  8. def crossValidate[T, R](k: Int, dataset: IndexedSeq[T])(f: (IndexedSeq[T], IndexedSeq[T]) ⇒ R): IndexedSeq[R]

    Split a training set into k-folds, with a test sets equal to 1/kth of the data and training sets the rest of it.

    Split a training set into k-folds, with a test sets equal to 1/kth of the data and training sets the rest of it. Returns a IndexedSeq of results, one for each execution.

    Syntax: crossValidate(K, myDataSet)( (trainSet,testSet) => {produce a result} )

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  15. def loocv[T](dataset: IndexedSeq[T]): AnyRef { def apply[R](f: (IndexedSeq[T], IndexedSeq[T]) => R): IndexedSeq[R] }

    Leave-one-out Cross validation Split a training set into dataset.

    Leave-one-out Cross validation Split a training set into dataset.size-folds, with a test sets equal to 1 of the data and training sets for the rest of it. Returns a IndexedSeq of results, one for each execution.

    This is probably very slow!

    Syntax: loocv(myDataSet)( (trainSet,testSet) => {produce a result} )

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