[−][src]Trait genevo::genetic::Fitness

pub trait Fitness: Eq + Ord + Clone + Debug + Sized {
    fn zero() -> Self;
    fn abs_diff(&self, other: &Self) -> Self;
}

A Fitness value is used to determine the quality of a Genotype. Fitness values should have an ordering, also called ranking.

Make sure the following statement holds: A Genotype with a Fitness value of f1 performs better than another Genotype with a Fitness value of f2 if f1 > f2.

For multi-objective Fitness values either operator::GeneticOperators suitable for multi-objective optimization are used or the implementation of the multi-objective Fitness value additionally implements the AsScalar trait. Using single-objective optimization for multi-objective problems has some drawbacks though.

Required methods

`fn zero() -> Self`

Returns the zero value of this Fitness value. The internal value should be 0.

`fn abs_diff(&self, other: &Self) -> Self`

Returns the absolute difference between this Fitness value and the other one, i.e. result = |self| - |other|

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Implementations on Foreign Types

`impl Fitness for i8`[src]

`fn zero() -> i8`[src]

`fn abs_diff(&self, other: &i8) -> i8`[src]

`impl Fitness for i16`[src]

`fn zero() -> i16`[src]

`fn abs_diff(&self, other: &i16) -> i16`[src]

`impl Fitness for i32`[src]

`fn zero() -> i32`[src]

`fn abs_diff(&self, other: &i32) -> i32`[src]

`impl Fitness for i64`[src]

`fn zero() -> i64`[src]

`fn abs_diff(&self, other: &i64) -> i64`[src]

`impl Fitness for isize`[src]

`fn zero() -> isize`[src]

`fn abs_diff(&self, other: &isize) -> isize`[src]

`impl Fitness for u8`[src]

`fn zero() -> u8`[src]

`fn abs_diff(&self, other: &u8) -> u8`[src]

`impl Fitness for u16`[src]

`fn zero() -> u16`[src]

`fn abs_diff(&self, other: &u16) -> u16`[src]

`impl Fitness for u32`[src]

`fn zero() -> u32`[src]

`fn abs_diff(&self, other: &u32) -> u32`[src]

`impl Fitness for u64`[src]

`fn zero() -> u64`[src]

`fn abs_diff(&self, other: &u64) -> u64`[src]

`impl Fitness for usize`[src]

`fn zero() -> usize`[src]

`fn abs_diff(&self, other: &usize) -> usize`[src]

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Implementors

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