Package isula.aco

Class Environment

java.lang.Object
isula.aco.Environment
Direct Known Subclasses:
MatrixEnvironment
public abstract class Environment extends Object
The place that our ants traverse, where they gather the information to build solutions.

This class manages the access to the problem representation - as an array of doubles- and to the pheromone matrix. Each concrete class needs to define a way to build a pheromone matrix to the problem to be solved.

Author:
Carlos G. Gavidia

  • Constructor Details

    • Environment

      public Environment()
      Creates an Environment for the Ants to traverse.

  • Method Details

    • createPheromoneMatrix

      protected abstract double[][] createPheromoneMatrix()
      Creates a pheromone matrix depending of the nature of the problem to solve. When overriding this method, you can call getProblemRepresentation() to obtain problem context information.
      Returns:
      Pheromone matrix instance.

    • setPheromoneMatrix

      public void setPheromoneMatrix(double[][] pheromoneMatrix)

    • getPheromoneMatrix

      public double[][] getPheromoneMatrix()

    • populatePheromoneMatrix

      public void populatePheromoneMatrix(double pheromoneValue)
      Assigns the same value to all cells on the Pheromone Matrix.
      Parameters:
      pheromoneValue - Value to assign.

    • applyFactorToPheromoneMatrix

      public void applyFactorToPheromoneMatrix(double factor)
      Multiplies every cell in the pheromone matrix by a factor.
      Parameters:
      factor - Factor for multiplication.