Package fr.uga.pddl4j.planners.statespace.search

Class DepthFirstSearch

java.lang.Object

fr.uga.pddl4j.planners.statespace.search.AbstractStateSpaceSearch

fr.uga.pddl4j.planners.statespace.search.DepthFirstSearch

All Implemented Interfaces:

SearchStrategy, StateSpaceSearch, Serializable

public final class DepthFirstSearch
extends AbstractStateSpaceSearch

This class implements Depth First Search strategy.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface fr.uga.pddl4j.planners.SearchStrategy

SearchStrategy.Name

Field Summary

Fields inherited from interface fr.uga.pddl4j.planners.statespace.search.StateSpaceSearch

DEFAULT_HEURISTIC, DEFAULT_HEURISTIC_WEIGHT, DEFAULT_TIMEOUT

Constructor Summary

Constructors

Constructor	Description
DepthFirstSearch()	Creates a new Greedy best First Search search strategy with default parameters.
DepthFirstSearch(int timeout)	Creates a new Greedy best First Search search strategy.

Method Summary

Modifier and Type	Method	Description
Node	search(Problem codedProblem)	The greedy best first search algorithm.

Methods inherited from class fr.uga.pddl4j.planners.statespace.search.AbstractStateSpaceSearch

extractPlan, getCreatedNodes, getExploredNodes, getHeuristic, getMemoryUsed, getPendingNodes, getSearchingTime, getTimeout, getWeight, resetNodesStatistics, searchPlan, searchSolutionNode, setCreatedNodes, setExploredNodes, setHeuristic, setMemoryUsed, setPendingNodes, setSearchingTime, setTimeOut, setWeight

Methods inherited from class java.lang.Object

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

Constructor Details

DepthFirstSearch

public DepthFirstSearch()

Creates a new Greedy best First Search search strategy with default parameters.

DepthFirstSearch

public DepthFirstSearch(int timeout)

Creates a new Greedy best First Search search strategy.

Parameters:

timeout - the time out of the planner.

Method Details

search

public Node search(Problem codedProblem)

The greedy best first search algorithm. Solves the planning problem and returns the first solution plan found. This method must be completed.

Parameters:

codedProblem - the problem to be solved. The problem cannot be null.

Returns:

a solution plan or null if it does not exist.