Struct FittedOrdinalEncoder 

pub struct FittedOrdinalEncoder { /* private fields */ }

Fitted OrdinalEncoder — holds per-column vocabularies and mappings.

Implementations

impl FittedOrdinalEncoder

pub fn transform(&self, columns: &[Vec<String>]) -> Result<Vec<Vec<usize>>>

Transform string columns into ordinal-encoded integer columns.

Returns a Vec<Vec<usize>> where each inner vec is an encoded column.

pub fn inverse_transform( &self, columns: &[Vec<usize>], ) -> Result<Vec<Vec<String>>>

Inverse-transform ordinal-encoded columns back to string columns.

pub fn vocabulary(&self, column: usize) -> Option<&[String]>

Return the vocabulary for a specific column.

pub fn n_columns(&self) -> usize

Return the number of columns.

pub fn n_categories(&self) -> Vec<usize>

Return the number of categories per column.

Trait Implementations

impl Clone for FittedOrdinalEncoder

fn clone(&self) -> FittedOrdinalEncoder

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FittedOrdinalEncoder

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for FittedOrdinalEncoder

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for FittedOrdinalEncoder

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.