Struct TextFeatureSelector 

pub struct TextFeatureSelector { /* private fields */ }

Text feature selector

Filters features based on document frequency.

Implementations

impl TextFeatureSelector

pub fn new() -> Self

Create a new feature selector

pub fn set_min_df(self, mindf: f64) -> Result<Self>

Set minimum document frequency

pub fn set_max_df(self, maxdf: f64) -> Result<Self>

Set maximum document frequency

pub fn set_max_features(self, maxfeatures: f64) -> Result<Self>

Set maximum document frequency (alias for set_max_df)

pub fn use_counts(self, usecounts: bool) -> Self

Set to use absolute counts instead of fractions

pub fn fit(&mut self, x: &Array2<f64>) -> Result<&mut Self>

Fit the feature selector to data

pub fn transform(&self, x: &Array2<f64>) -> Result<Array2<f64>>

Transform data using selected features

pub fn fit_transform(&mut self, x: &Array2<f64>) -> Result<Array2<f64>>

Fit and transform in one step

pub fn get_selected_features(&self) -> Option<&Vec<usize>>

Get selected feature indices

Trait Implementations

impl Clone for TextFeatureSelector

fn clone(&self) -> TextFeatureSelector

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TextFeatureSelector

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

Formats the value using the given formatter.

impl Default for TextFeatureSelector

fn default() -> Self

Returns the “default value” for a type.