Cap. 4. Comunicação entre agentes,

Linguagens e plataformas de

programação multiagentes

Communication

� In this chapter, we cover macro-aspects of intelligent

� agent technology: those issues relating to the agent

� society, rather than the individual:

� communication :

� speech acts; KQML & KIF; FIPA ACL.� speech acts; KQML & KIF; FIPA ACL.

� cooperation:

� what is cooperation; prisoner’s dilemma; cooperative versus non-cooperative encounters; the contract net.

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Speech Act theory

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Speech Act theory - 2

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Speech Acts

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Examples

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Plan based Semantics

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Plan based Semantics for request

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Agent Communication Languages

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KQML and KIF

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Example

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Dialogue Example

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Dialogue Example – 2 (cont.)

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FIPA

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FIPA Example

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FIPA Performatives

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Basic performatives

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Inform Performative

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Request Performative

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Ontologies

� An ontology may be described in languages like OWL, RDF,RDF/S and others

� Others software suites like Protégé, OntoStudio and others7-21

Ontologies - 2

� Ontologies for complex domains or several domains can be very complex

� For specific simple domains usually they can be simple

� Agent communication platforms usually provide for dealing with ontologies

� JADE provides an “adapter” to import Protégé’s ontology to JADE content reference model

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The Contract Net Protocol

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Recognition

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Announcement

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Bidding

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Awarding & Expediting

The Contract Net via FIPA ACL

Contract Net

How to bid…

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Cost of carrying out tasks

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