Struct QueryByCommittee 

pub struct QueryByCommittee { /* private fields */ }

Query by Committee for Active Learning

Query by Committee selects samples where multiple models disagree the most. It maintains an ensemble of models and selects samples with the highest disagreement among committee members.

Parameters

• n_committee_members - Number of models in the committee
• disagreement_measure - Measure of disagreement (“vote_entropy”, “kl_divergence”)
• n_samples - Number of samples to select
• diversity_weight - Weight for diversity in selection

Examples

use sklears_semi_supervised::QueryByCommittee;


let committee_probas = vec![
    array![[0.8, 0.2], [0.6, 0.4], [0.3, 0.7]],
    array![[0.7, 0.3], [0.5, 0.5], [0.4, 0.6]],
    array![[0.9, 0.1], [0.4, 0.6], [0.2, 0.8]],
];

let qbc = QueryByCommittee::new()
    .n_committee_members(3)
    .disagreement_measure("vote_entropy".to_string())
    .n_samples(2);
let selected = qbc.select_samples(&committee_probas).unwrap();

Implementations

impl QueryByCommittee

pub fn new() -> Self

Create a new QueryByCommittee instance

pub fn n_committee_members(self, n_members: usize) -> Self

Set the number of committee members

pub fn disagreement_measure(self, measure: String) -> Self

Set the disagreement measure

pub fn n_samples(self, n_samples: usize) -> Self

Set the number of samples to select

pub fn diversity_weight(self, weight: f64) -> Self

Set the diversity weight

pub fn normalize_disagreement(self, normalize: bool) -> Self

Enable/disable disagreement normalization

pub fn select_samples( &self, committee_probas: &[Array2<f64>], ) -> SklResult<Vec<usize>>

Select samples based on committee disagreement

Trait Implementations

impl Clone for QueryByCommittee

fn clone(&self) -> QueryByCommittee

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for QueryByCommittee

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

Formats the value using the given formatter.

impl Default for QueryByCommittee

fn default() -> Self

Returns the “default value” for a type.