Module com.aoindustries.aoserv.cluster
Package com.aoindustries.aoserv.cluster.optimize

Class ExponentialDeviationWithNoneHeuristicFunction

java.lang.Object
com.aoindustries.aoserv.cluster.optimize.ExponentialDeviationWithNoneHeuristicFunction
All Implemented Interfaces:
ResultHandler<Object>, HeuristicFunction
public class ExponentialDeviationWithNoneHeuristicFunction extends Object implements HeuristicFunction, ResultHandler<Object>
Adds up all the non-optimal states of the analyzed cluster giving more weight to higher level problems. Adds in g*.00001 to prefer shorter paths. Each type of problem is scaled by how far off the state is when possible.

The heuristics for "NONE" are also added (in negative form) with a coefficient of .001 (as a tie breaker with more weight than number of moves).

This is not thread safe.

The values are:

BASE = 1.5

 NONE = 0.001 * deviation
 LOW = deviation
 MEDIUM = BASE * deviation
 HIGH = BASE*BASE * deviation
 CRITICAL = 1024 + BASE*BASE*BASE * deviation
Author:
AO Industries, Inc.

  • Constructor Details

    • ExponentialDeviationWithNoneHeuristicFunction

      public ExponentialDeviationWithNoneHeuristicFunction()

  • Method Details

    • getHeuristic

      public double getHeuristic(ClusterConfiguration clusterConfiguration, int g)
      Description copied from interface: HeuristicFunction
      Estimates the number of moves to an optimal state. If it uses the provided g g(n) it will result in Algorithm A. If it also always uses h(n) <= h*(n) it will result in Algorithm A*.
      Specified by:
      getHeuristic in interface HeuristicFunction
      Parameters:
      clusterConfiguration - The ClusterConfiguration representing the current state.
      g - The number of moves already made.
      Returns:
      The estimated number of moves to an optimal state

    • handleResult

      public boolean handleResult(Result<?> result)
      Description copied from interface: ResultHandler
      Each result is provided as it is generated instead of building into lists.
      Specified by:
      handleResult in interface ResultHandler<Object>
      Returns:
      true if more results are wanted, or false to receive no more results.