Struct GreatDelugeAcceptor 

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

Great Deluge acceptor - accepts moves above a rising water level.

The water level starts at the initial solution’s score and rises over time. A move is accepted if its resulting score is at or above the current water level. This allows temporary score degradation while gradually tightening acceptance.

Algorithm

1. Water level starts at initial score
2. Each step, water level rises by rain_speed * |initial_score|
3. Accept if move_score >= water_level

Example

use solverforge_solver::phase::localsearch::GreatDelugeAcceptor;
use solverforge_core::score::SoftScore;
use solverforge_core::domain::PlanningSolution;

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

// Rain speed of 0.001 means water level rises by 0.1% of |initial| per step
let acceptor = GreatDelugeAcceptor::<MySolution>::new(0.001);

Implementations

impl<S: PlanningSolution> GreatDelugeAcceptor<S>

pub fn new(rain_speed: f64) -> Self

Creates a new Great Deluge acceptor.

Arguments

• rain_speed - Ratio of |initial_score| to raise water level per step. Typical values: 0.0001 to 0.01

Trait Implementations

impl<S: PlanningSolution> Acceptor<S> for GreatDelugeAcceptor<S>

fn is_accepted( &mut self, last_step_score: &S::Score, move_score: &S::Score, ) -> bool

fn phase_started(&mut self, initial_score: &S::Score)

fn step_ended(&mut self, _step_score: &S::Score)

fn phase_ended(&mut self)

fn step_started(&mut self)

impl<S: PlanningSolution> Clone for GreatDelugeAcceptor<S>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

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

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

Formats the value using the given formatter.

impl<S: PlanningSolution> Default for GreatDelugeAcceptor<S>

fn default() -> Self

Returns the “default value” for a type.