Struct DiminishedReturnsTermination 

pub struct DiminishedReturnsTermination<S: PlanningSolution> { /* private fields */ }

Terminates when the rate of score improvement falls below a threshold.

Tracks score improvements over a sliding time window and terminates when the improvement rate drops below a minimum, indicating diminished returns from continued optimization.

Example

use std::time::Duration;
use solverforge_solver::termination::DiminishedReturnsTermination;
use solverforge_core::score::SimpleScore;
use solverforge_core::domain::PlanningSolution;

#[derive(Clone)]
struct MySolution;
impl PlanningSolution for MySolution {
    type Score = SimpleScore;
    fn score(&self) -> Option<Self::Score> { None }
    fn set_score(&mut self, _: Option<Self::Score>) {}
}

// Terminate when improvement rate falls below 0.1 per second over a 10s window
let term = DiminishedReturnsTermination::<MySolution>::new(
    Duration::from_secs(10),
    0.1,
);

Implementations

impl<S: PlanningSolution> DiminishedReturnsTermination<S>

pub fn new(window: Duration, min_rate: f64) -> Self

Creates a new diminished returns termination.

Arguments

• window - Time window for measuring improvement rate
• min_rate - Minimum improvement rate (score units per second)

pub fn with_seconds(window_secs: u64, min_rate: f64) -> Self

Creates with a window in seconds.

Trait Implementations

impl<S: PlanningSolution> Debug for DiminishedReturnsTermination<S>

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

Formats the value using the given formatter.

impl<S: PlanningSolution, D: ScoreDirector<S>> Termination<S, D> for DiminishedReturnsTermination<S>

fn is_terminated(&self, solver_scope: &SolverScope<'_, S, D>) -> bool

Returns true if solving should terminate.

impl<S: PlanningSolution> Send for DiminishedReturnsTermination<S>