Trait RecencyPolicy 

pub trait RecencyPolicy: Send + Sync {
    // Required method
    fn factor(&self, fact: &RecencyContext) -> f64;

    // Provided method
    fn is_identity(&self) -> bool { ... }
}

Multiplies a result’s retrieval score. Default: NoRecency, which leaves scores exactly as document search returned them.

Required Methods

fn factor(&self, fact: &RecencyContext) -> f64

A finite, nonnegative multiplier.

Provided Methods

fn is_identity(&self) -> bool

True when the policy never changes a score; recall then skips it and keeps the document search order.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl RecencyPolicy for ExponentialRecency

impl RecencyPolicy for NoRecency