AntSystemRank

java.lang.Object
- libai.ants.algorithms.Metaheuristic
- - libai.ants.algorithms.AntSystem
  - - libai.ants.algorithms.ElitistAntSystem
    - - libai.ants.algorithms.AntSystemRank

All Implemented Interfaces:

java.util.Comparator<Ant>
```
public abstract class AntSystemRank
extends ElitistAntSystem
```
This class belong to the core classes of the Ant Framework.
Implements the Rank Ant System algorithm. It is essentially the same as Elitist Ant System, but the arcs of the best-so-far tour of the best r ants are reinforced proportionally to the ant's rank Empirical results shows that this behaves slightly better that Elitits Ant System.

Field Summary
- Fields inherited from class libai.ants.algorithms.AntSystem
  debug, pheromonesEvaporationRate
- Fields inherited from class libai.ants.algorithms.ElitistAntSystem
  epsilon
- Fields inherited from class libai.ants.algorithms.Metaheuristic
  alpha, Ants, bestSolution, beta, candidates, currentIterationNumber, destinationNode, E, Graph, initialNode, maxNumIterations, numberOfAnts, numberOfNodes, Parameters, Pheromones

Constructor Summary

Constructors
Modifier Constructor Description

protected AntSystemRank()
Constructor.

protected AntSystemRank(Enviroment E)
Constructor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`pheromonesUpdate()`	Updates the pheromone trail contained in the enviroment E according to some ACO algorithm specific logic

Methods inherited from class libai.ants.algorithms.AntSystem
antCycle, antDensity, antQuantity, candidateList, decisionRule, linkOccursInPath, pheromonesEvaporation, solve

Methods inherited from interface java.util.Comparator
equals, reversed, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Methods inherited from class libai.ants.algorithms.ElitistAntSystem
checkParameters, daemonActions

Methods inherited from class libai.ants.algorithms.Metaheuristic
compare, constrains, f, getBestSolution, getCurrentIterationNumber, getE, getNumberOfNodes, getParam, heuristicInfo, setE, setNumberOfNodes, setParam

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - AntSystemRank
```
protected AntSystemRank(Enviroment E)
```
    Constructor. Allocates the enviroment.
    
    Parameters:
    
    E - enviroment
  - AntSystemRank
```
protected AntSystemRank()
```
    Constructor. Empty constructor.
- Method Detail
  - pheromonesUpdate
```
public void pheromonesUpdate()
```
    Description copied from class: Metaheuristic
    
    Updates the pheromone trail contained in the enviroment E according to some ACO algorithm specific logic
    
    Overrides:
    
    pheromonesUpdate in class AntSystem