Struct Normalize 

pub struct Normalize { /* private fields */ }

A transform that normalizes numeric columns.

Supports min-max scaling, z-score standardization, and L2 normalization.

Example

use alimentar::{Normalize, NormMethod};

// Min-max normalize specific columns
let normalize = Normalize::new(vec!["feature1", "feature2"], NormMethod::MinMax);

// Z-score normalize all numeric columns
let normalize = Normalize::all_numeric(NormMethod::ZScore);

Implementations

impl Normalize

pub fn new<S: Into<String>>( columns: impl IntoIterator<Item = S>, method: NormMethod, ) -> Self

Creates a Normalize transform for specific columns.

pub fn all_numeric(method: NormMethod) -> Self

Creates a Normalize transform that applies to all numeric columns.

pub fn columns(&self) -> Option<&[String]>

Returns the columns to normalize (None means all numeric).

pub fn method(&self) -> NormMethod

Returns the normalization method.

Trait Implementations

impl Clone for Normalize

fn clone(&self) -> Normalize

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Normalize

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Transform for Normalize

fn apply(&self, batch: RecordBatch) -> Result<RecordBatch>

Applies the transform to a RecordBatch.