Struct ConstantImputer 

pub struct ConstantImputer { /* private fields */ }

Replaces NaN values with a constant.

This transformer accepts NaN in its input, unlike most other transformers. The fill value must be finite.

Implementations

impl ConstantImputer

pub fn new(feature_count: usize) -> Result<Self, RillError>

Create a new imputer for feature_count features with default config.

Errors

Returns RillError::EmptyFeatures if feature_count is 0.

pub fn with_config( feature_count: usize, config: ConstantImputerConfig, ) -> Result<Self, RillError>

Create a new imputer with a custom configuration.

Errors

Returns RillError::EmptyFeatures if feature_count is 0. Returns RillError::NonFiniteValue if fill_value is not finite.

pub fn fill_value(&self) -> f64

The fill value used to replace NaN.

Trait Implementations

impl Clone for ConstantImputer

fn clone(&self) -> ConstantImputer

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ConstantImputer

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

Formats the value using the given formatter.

impl Transformer for ConstantImputer

fn input_dim(&self) -> usize

Expected number of input features.

fn output_dim(&self) -> usize

Number of features produced by transform.

fn transform(&self, features: &[f64]) -> Result<Vec<f64>, RillError>

Transform features using the current internal state.

fn update(&mut self, features: &[f64]) -> Result<(), RillError>

Update internal statistics using raw features.

fn samples_seen(&self) -> u64

How many samples the transformer has seen.

fn reset(&mut self)

Reset the transformer to its initial state.