BethePermanent

All Implemented Interfaces:
```
public final class BethePermanent
extends PermSolver
                    
```
Implementation of Sum Product Algorithm (SPA) to approximate the Bethe permanent.
The Bethe permanent approximation uses message passing between matrix elements to compute an approximation of the permanent. This method is particularly useful for large matrices where exact computation is computationally expensive.

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description

Field Summary

Fields
Modifier and Type	Field	Description
`private final Integer`	`n`
`private Double`	`value`
`private Long`	`time`
`private Long`	`memory`
`private final Matrix`	`matrix`

Constructor Summary

Constructors
Constructor	Description
`BethePermanent(Matrix matrix, Double epsilon, Integer maxIteration, Boolean solve)`

Enum Constant Summary

Enum Constants
Enum Constant	Description

Method Summary

Modifier and Type	Method	Description
`Unit`	`compute()`	Compute the permanent or approximation for the given matrix.

Methods inherited from class jline.lib.perm.PermSolver
getMatrix, getMemory, getN, getTime, getValue, setMemory, setTime, setValue, solve
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - BethePermanent
```
BethePermanent(Matrix matrix, Double epsilon, Integer maxIteration, Boolean solve)
```
    Parameters:
    
    matrix - The matrix for which to compute the Bethe permanent approximation
    
    epsilon - Convergence threshold for the SPA algorithm (default: 0.
    
    maxIteration - Maximum number of iterations if convergence is not reached (default: 200000)
    
    solve - Whether to automatically run solve() after construction (default: false)
- Method Detail
  - compute
```
 Unit compute()
```
    Compute the permanent or approximation for the given matrix. This method must be implemented by all concrete solver classes. The result should be stored in the value property.