org.apache.ignite.ml.genetic

Class RouletteWheelSelectionTask

java.lang.Object

org.apache.ignite.compute.ComputeTaskAdapter<LinkedHashMap<Long,Double>,List<Long>>

org.apache.ignite.ml.genetic.RouletteWheelSelectionTask

All Implemented Interfaces:

Serializable, ComputeTask<LinkedHashMap<Long,Double>,List<Long>>

public class RouletteWheelSelectionTask
extends ComputeTaskAdapter<LinkedHashMap<Long,Double>,List<Long>>

Responsible for performing Roulette Wheel selection.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
RouletteWheelSelectionTask(GAConfiguration cfg)

Method Summary

Modifier and Type	Method and Description
@NotNull Map<ComputeJob,ClusterNode>	map(List<ClusterNode> nodes, LinkedHashMap<Long,Double> chromosomeKeyFitness)
List<Long>	reduce(List<ComputeJobResult> list) Return list of parent Chromosomes.
ComputeJobResultPolicy	result(ComputeJobResult res, List<ComputeJobResult> rcvd)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

RouletteWheelSelectionTask

public RouletteWheelSelectionTask(GAConfiguration cfg)

Parameters:

cfg - GAConfiguration

Method Detail

map

@NotNull
public @NotNull Map<ComputeJob,ClusterNode> map(List<ClusterNode> nodes,
                                                         LinkedHashMap<Long,Double> chromosomeKeyFitness)
                                                  throws IgniteException

Parameters:

nodes - List of ClusterNode.

chromosomeKeyFitness - Map of key/fitness score pairs.

Returns:

Map of nodes to jobs.

Throws:

IgniteException

reduce

public List<Long> reduce(List<ComputeJobResult> list)
                  throws IgniteException

Return list of parent Chromosomes.

Parameters:

list - List of ComputeJobResult.

Returns:

List of Chromosome keys.

Throws:

IgniteException

result

public ComputeJobResultPolicy result(ComputeJobResult res,
                                     List<ComputeJobResult> rcvd)

Specified by:

result in interface ComputeTask<LinkedHashMap<Long,Double>,List<Long>>

Overrides:

result in class ComputeTaskAdapter<LinkedHashMap<Long,Double>,List<Long>>