Existence020.java

Package: existence/
File: Existence020.java

  1. package existence;
  2.  
  3. import coupling.Experiment;
  4. import coupling.Result;
  5. import coupling.interaction.Interaction020;
  6.  
  7. /**
  8.  * An Existence020 is a sort of Existence010 in which each Interaction has a predefined Valence.
  9.  * When a given Experience is performed and a given Result is obtained, the corresponding Interaction is considered enacted.
  10.  * The Existence020 is PLEASED when the enacted Interaction has a positive or null Valence, and PAINED otherwise.
  11.  * An Existence020 is still a single entity rather than being split into an explicit Agent and Environment. 
  12.  * An Existence020 demonstrates a rudimentary decisional mechanism and a rudimentary learning mechanism.
  13.  * It learns to choose the Experience that induces an Interaction that has a positive valence.  
  14.  * Try to change the Valences of interactions and the method giveResult(experience) 
  15.  * and observe that the Existence020 still learns to enact interactions that have positive valences.  
  16.  */
  17. public class Existence020 extends Existence010 {
  18.  
  19. 	@Override
  20. 	protected void initExistence(){
  21. 		Experiment e1 = addOrGetExperience(LABEL_E1);
  22. 		Experiment e2 = addOrGetExperience(LABEL_E2);
  23. 		Result r1 = createOrGetResult(LABEL_R1);
  24. 		Result r2 = createOrGetResult(LABEL_R2);
  25. 		/** Change the valence of interactions to change the agent's motivation */
  26. 		addOrGetPrimitiveInteraction(e1, r1, -1);  
  27. 		addOrGetPrimitiveInteraction(e1, r2, 1);
  28. 		addOrGetPrimitiveInteraction(e2, r1, -1);
  29. 		addOrGetPrimitiveInteraction(e2, r2, 1);		
  30. 		this.setPreviousExperience(e1);
  31. 	}
  32.  
  33. 	@Override
  34. 	public String step() {
  35.  
  36. 		Experiment experience = this.getPreviousExperience();
  37. 		if (this.getMood() == Mood.PAINED)
  38. 			experience = getOtherExperience(experience);		
  39.  
  40. 		Result result = returnResult010(experience);
  41.  
  42. 		Interaction020 enactedInteraction = (Interaction020)this.addOrGetPrimitiveInteraction(experience, result);
  43.  
  44. 		if (enactedInteraction.getValence() >= 0)
  45. 			this.setMood(Mood.PLEASED);
  46. 		else
  47. 			this.setMood(Mood.PAINED);
  48.  
  49. 		this.setPreviousExperience(experience);
  50.  
  51. 		return experience.getLabel() + result.getLabel() + " " + this.getMood();
  52. 	}
  53.  
  54. 	/**
  55. 	 * Create an interaction as a tuple <experience, result>.
  56. 	 * @param experience: The experience.
  57. 	 * @param result: The result.
  58. 	 * @param valence: the interaction's valence
  59. 	 * @return The created interaction
  60. 	 */
  61. 	protected Interaction020 addOrGetPrimitiveInteraction(Experiment experience, Result result, int valence) {
  62. 		String label = experience.getLabel() + result.getLabel();
  63. 		if (!INTERACTIONS.containsKey(label)){
  64. 			Interaction020 interaction = createInteraction(label);
  65. 			interaction.setExperience(experience);
  66. 			interaction.setResult(result);
  67. 			interaction.setValence(valence);
  68. 			INTERACTIONS.put(label, interaction);			
  69. 		}
  70. 		Interaction020 interaction = (Interaction020)INTERACTIONS.get(label);
  71. 		return interaction;
  72. 	}
  73.  
  74. 	@Override
  75. 	protected Interaction020 createInteraction(String label){
  76. 		return new Interaction020(label);
  77. 	}
  78.  
  79. 	@Override
  80. 	protected Interaction020 getInteraction(String label){
  81. 		return (Interaction020)INTERACTIONS.get(label);
  82. 	}
  83.  
  84. }
  85.  

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