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Agentes
Inteligência Artificial I
Universidade Luterana do Brasil
Prof Fabiana Lorenzi
O que é um agente?
● Um agente é uma entidade real (robô) ou virtual
(programa), imersa em um ambiente onde ele pode agir e no
qual ele possui percepção e representação parcial deste
ambiente (Wooldridge, 2002).
2
O que é um agente?
● Evolui em um ambiente;
● Capaz de perceber o ambiente (através de seus sensores);
● Capaz de agir no seu ambiente (através de seus
atuadores);
● Capaz de se comunicar com outros agentes.
3
Agentes reativos
● Age em função apenas de seu conhecimento interno;
● Não leva em conta sua percepção;
● Inteligência no projetista e não no agente.
4
Agentes Reativos
● Baseados em modelos de organização biológica ou
etológica, como, por exemplo, as sociedades de formigas
ou cupins;
● Não tem memória (não planeja ação);
● Representação implícita (modificação do ambiente);
● Muitos agentes.
5
Agentes Reativos
6
Agente aspirador de pó
7
Agentes Inteligentes
● Também conhecidos como Autônomos, Deliberativos ou
Cognitivos;
● Seu comportamento é determinado pela sua própria
experiência;
● Agente opera com sucesso em qualquer ambiente.
8
Agentes Inteligentes
● Baseados em modelos de organizações sociais humanas como
grupos, hierarquias e mercados;
● Tem memória (planeja ações);
● Agentes se comunicam;
● Representação explícita do ambiente e dos outros agentes;
● poucos agentes (5 a 10).
9
Exemplos
● Agente de extração de informação
● Assistente virtual Clips (word)
● Agentes de busca e recuperação de informação
● Agentes adaptativos utilizados nos ambientes de ensino à
distância
● Agentes aplicados no comércio eletrônico.
10
Referências
Russell, Stuart e Norvig, Peter. Inteligência artificial.
Tradução Vandenberg D. de Souza. Rio de Janeiro : Campus,
2004
WOOLDRIDGE, M. J. An Introduction to MultiAgent Systems.
Chichester: John Wiley & Sons, 2002.
11

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Agentes

  • 1. Agentes Inteligência Artificial I Universidade Luterana do Brasil Prof Fabiana Lorenzi
  • 2. O que é um agente? ● Um agente é uma entidade real (robô) ou virtual (programa), imersa em um ambiente onde ele pode agir e no qual ele possui percepção e representação parcial deste ambiente (Wooldridge, 2002). 2
  • 3. O que é um agente? ● Evolui em um ambiente; ● Capaz de perceber o ambiente (através de seus sensores); ● Capaz de agir no seu ambiente (através de seus atuadores); ● Capaz de se comunicar com outros agentes. 3
  • 4. Agentes reativos ● Age em função apenas de seu conhecimento interno; ● Não leva em conta sua percepção; ● Inteligência no projetista e não no agente. 4
  • 5. Agentes Reativos ● Baseados em modelos de organização biológica ou etológica, como, por exemplo, as sociedades de formigas ou cupins; ● Não tem memória (não planeja ação); ● Representação implícita (modificação do ambiente); ● Muitos agentes. 5
  • 8. Agentes Inteligentes ● Também conhecidos como Autônomos, Deliberativos ou Cognitivos; ● Seu comportamento é determinado pela sua própria experiência; ● Agente opera com sucesso em qualquer ambiente. 8
  • 9. Agentes Inteligentes ● Baseados em modelos de organizações sociais humanas como grupos, hierarquias e mercados; ● Tem memória (planeja ações); ● Agentes se comunicam; ● Representação explícita do ambiente e dos outros agentes; ● poucos agentes (5 a 10). 9
  • 10. Exemplos ● Agente de extração de informação ● Assistente virtual Clips (word) ● Agentes de busca e recuperação de informação ● Agentes adaptativos utilizados nos ambientes de ensino à distância ● Agentes aplicados no comércio eletrônico. 10
  • 11. Referências Russell, Stuart e Norvig, Peter. Inteligência artificial. Tradução Vandenberg D. de Souza. Rio de Janeiro : Campus, 2004 WOOLDRIDGE, M. J. An Introduction to MultiAgent Systems. Chichester: John Wiley & Sons, 2002. 11