Struct IsingProblem 

pub struct IsingProblem {
    pub num_spins: usize,
    pub h: Array1<f64>,
    pub j: Array2<f64>,
    pub offset: f64,
    pub metadata: ProblemMetadata,
}

Ising problem representation

Fields

num_spins: usize

Number of spins

h: Array1<f64>

Linear coefficients (h_i)

j: Array2<f64>

Quadratic coefficients (J_{ij})

offset: f64

Offset constant

metadata: ProblemMetadata

Problem metadata

Implementations

impl IsingProblem

pub fn new(num_spins: usize) -> Self

Create new Ising problem

pub fn set_h(&mut self, i: usize, value: f64)

Set linear coefficient

pub fn set_j(&mut self, i: usize, j: usize, value: f64)

Set quadratic coefficient

pub fn calculate_energy(&self, configuration: &[i8]) -> f64

Calculate energy for a given configuration

pub fn to_qubo(&self) -> QUBOProblem

Convert to QUBO problem

pub fn find_ground_state_brute_force(&self) -> (Vec<i8>, f64)

Find ground state using brute force (for small problems)

Trait Implementations

impl Clone for IsingProblem

fn clone(&self) -> IsingProblem

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for IsingProblem

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

Formats the value using the given formatter.