Struct MultiFieldSearchOperator 

pub struct MultiFieldSearchOperator {
    pub fields: Vec<String>,
    pub queries: Vec<String>,
    pub weights: Vec<f64>,
    pub bayesian_params: BayesianBM25Params,
    pub fusion_alpha: f64,
}

Multi-field Bayesian BM25 search (Section 12.2 #1, Paper 3). Searches every field with its corresponding query, scores each field through a prior-free uqa_scoring::BayesianBM25Scorer, and fuses the per-field evidence through weighted robust positive-evidence pooling (uqa_fusion::positive_evidence); the configured base_rate enters the pool exactly once.

Fields

fields: Vec<String>

queries: Vec<String>

weights: Vec<f64>

bayesian_params: BayesianBM25Params

fusion_alpha: f64

Implementations

impl MultiFieldSearchOperator

pub fn new( fields: Vec<String>, query: impl Into<String>, weights: Option<Vec<f64>>, ) -> Self

pub fn with_queries( fields: Vec<String>, queries: Vec<String>, weights: Option<Vec<f64>>, ) -> Self

Trait Implementations

impl Operator for MultiFieldSearchOperator

fn execute(&self, ctx: &ExecutionContext) -> OperatorResult

fn cost_estimate(&self, stats: &IndexStats) -> f64