Struct ClosureMultiObjective 

pub struct ClosureMultiObjective<G, F> { /* private fields */ }

Adapts a closure into a MultiObjectiveFitness with an explicit objective count.

A bare Fn(&G) -> Vec<f64> cannot report how many objectives it produces, so the previous blanket impl hardcoded num_objectives() == 2, silently mis-reporting the count for any 3+ objective problem (EV-85). This wrapper requires the caller to state the true objective count at construction.

use fugue_evo::fitness::multi_objective::{ClosureMultiObjective, MultiObjectiveFitness};
use fugue_evo::genome::real_vector::RealVector;
use fugue_evo::genome::traits::RealValuedGenome;

let fitness = ClosureMultiObjective::new(3, |g: &RealVector| {
    let x = g.genes()[0];
    vec![x, x * x, x + 1.0]
});
assert_eq!(fitness.num_objectives(), 3);

Implementations

impl<G, F> ClosureMultiObjective<G, F>

where F: Fn(&G) -> Vec<f64>,

pub fn new(num_objectives: usize, f: F) -> Self

Wrap f, declaring that it returns num_objectives objective values.

Trait Implementations

impl<G, F> MultiObjectiveFitness<G> for ClosureMultiObjective<G, F>

where F: Fn(&G) -> Vec<f64> + Send + Sync,

Available on crate feature parallel only.

fn num_objectives(&self) -> usize

Number of objectives

fn evaluate(&self, genome: &G) -> Vec<f64>

Evaluate all objectives (all to be minimized by convention)