scaling

package

v0.2.0 Latest Latest Go to latest Published: May 24, 2022 License: MIT Imports: 3 Imported by: 0

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func Scale(x, u, s []float64) ([]float64, error)

Scale scales a single feature vector with given scaling parameters.

type FeatureScaler interface {
	// Scale scales a design matrix.
	Scale([][]float64) (Result, error)
}

FeatureScaler is the interface that wraps the basic Scale method.

func NewScaler(fst options.FeatureScalingTechnique) (FeatureScaler, error)

NewScaler returns a new scaler. If unsupported FeatureScalingTechnique is passed, an error is returned.

type Result struct {
	X [][]float64
	U []float64
	S []float64
}

Result holds the scaled features set along with the scaling parameters.

type ScalerFunc func([][]float64) (Result, error)

ScalerFunc is an adapter to allow the use of plain functions as scalers.

func (f ScalerFunc) Scale(x [][]float64) (Result, error)