Struct MissingIndicator 

pub struct MissingIndicator { /* private fields */ }

Adds a missing-value indicator for each feature.

transform([x1, x2, ...]) produces [x1, is_nan(x1) as f64, x2, is_nan(x2) as f64, ...]. The original values are preserved (including NaN), with the indicator appended after each value.

Implementations

impl MissingIndicator

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

Create a new indicator for feature_count features.

Errors

Returns RillError::EmptyFeatures if feature_count is 0.

Trait Implementations

impl Clone for MissingIndicator

fn clone(&self) -> MissingIndicator

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MissingIndicator

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

Formats the value using the given formatter.

impl Transformer for MissingIndicator

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.