aima.core.agent.impl.aprog

Class ModelBasedReflexAgentProgram

java.lang.Object

aima.core.agent.impl.aprog.ModelBasedReflexAgentProgram

All Implemented Interfaces:

AgentProgram

public abstract class ModelBasedReflexAgentProgram
extends java.lang.Object
implements AgentProgram

Artificial Intelligence A Modern Approach (3rd Edition): Figure 2.12, page 51.

 function MODEL-BASED-REFLEX-AGENT(percept) returns an action
   persistent: state, the agent's current conception of the world state
               model, a description of how the next state depends on current state and action
               rules, a set of condition-action rules
               action, the most recent action, initially none
               
   state  <- UPDATE-STATE(state, action, percept, model)
   rule   <- RULE-MATCH(state, rules)
   action <- rule.ACTION
   return action
 

Figure 2.12 A model-based reflex agent. It keeps track of the current state of the world using an internal model. It then chooses an action in the same way as the reflex agent.

Author:

Ciaran O'Reilly, Mike Stampone

Constructor Summary

Constructors

Constructor and Description
ModelBasedReflexAgentProgram()

Method Summary

Modifier and Type	Method and Description
Action	execute(Percept percept) The Agent's program, which maps any given percept sequences to an action.
protected abstract void	init() Realizations of this class should implement the init() method so that it calls the setState(), setModel(), and setRules() method.
protected Action	ruleAction(Rule r)
protected Rule	ruleMatch(DynamicState state, java.util.Set<Rule> rules)
void	setModel(Model model) Set the program's description of how the next state depends on the state and action.
void	setRules(java.util.Set<Rule> ruleSet) Set the program's condition-action rules
void	setState(DynamicState state) Set the agent's current conception of the world state.
protected abstract DynamicState	updateState(DynamicState state, Action action, Percept percept, Model model)

Methods inherited from class java.lang.Object

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

Constructor Detail

ModelBasedReflexAgentProgram

public ModelBasedReflexAgentProgram()

Method Detail

setState

public void setState(DynamicState state)

Set the agent's current conception of the world state.

Parameters:

state - the agent's current conception of the world state.

setModel

public void setModel(Model model)

Set the program's description of how the next state depends on the state and action.

Parameters:

model - a description of how the next state depends on the current state and action.

setRules

public void setRules(java.util.Set<Rule> ruleSet)

Set the program's condition-action rules

Parameters:

ruleSet - a set of condition-action rules

execute

public Action execute(Percept percept)

Description copied from interface: AgentProgram

The Agent's program, which maps any given percept sequences to an action.

Specified by:

execute in interface AgentProgram

Parameters:

percept - The current percept of a sequence perceived by the Agent.

Returns:

the Action to be taken in response to the currently perceived percept.

init

protected abstract void init()

Realizations of this class should implement the init() method so that it calls the setState(), setModel(), and setRules() method.

updateState

protected abstract DynamicState updateState(DynamicState state,
                                            Action action,
                                            Percept percept,
                                            Model model)

ruleMatch

protected Rule ruleMatch(DynamicState state,
                         java.util.Set<Rule> rules)

ruleAction

protected Action ruleAction(Rule r)