Struct OneHotEncodedFeatureGroup

pub struct OneHotEncodedFeatureGroup {
    pub source_column_name: String,
    pub variants: Vec<String>,
}

A OneHotEncodedFeatureGroup creates one number feature for each variant in an enum column, plus one number feature for invalid values. For each example, all of the features will have the value 0.0, except the feature corresponding to the column’s value, which will have the value 1.0.

Example

use std::num::NonZeroUsize;
use tangram_table::prelude::*;

EnumTableColumn::new(
  Some("color".to_owned()),
  vec!["red".to_owned(), "green".to_owned(), "blue".to_owned()],
  vec![None, Some(NonZeroUsize::new(1).unwrap()), Some(NonZeroUsize::new(2).unwrap()), Some(NonZeroUsize::new(3).unwrap())],
);

input value	feature values
“INVALID!”	[0, 0, 0]
“red”	[1, 0, 0]
“green”	[0, 1, 0]
“blue”	[0, 0, 1]

Fields

source_column_name: String

variants: Vec<String>

Implementations

impl OneHotEncodedFeatureGroup

pub fn compute_for_column( column: TableColumnView<'_>, ) -> OneHotEncodedFeatureGroup

impl OneHotEncodedFeatureGroup

pub fn compute_array_f32( &self, features: ArrayViewMut2<'_, f32>, column: TableColumnView<'_>, progress: &impl Fn(), )

Trait Implementations

impl Clone for OneHotEncodedFeatureGroup

fn clone(&self) -> OneHotEncodedFeatureGroup

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for OneHotEncodedFeatureGroup

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

Formats the value using the given formatter.