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Master's Dissertation
DOI
10.11606/D.3.2006.tde-18052006-013118
Document
Author
Full name
Marcos Antonio Cavalhieri
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2006
Supervisor
Committee
Netto, Marcio Lobo (President)
Lopes, Roseli de Deus
Silva, Flavio Soares Correa da
Title in Portuguese
Modelo comportamental baseado em crenças e teoria Bayesiana para simulações de vida artificial com humanos virtuais.
Keywords in Portuguese
Bayes
comportamento autônomo
crenças
humanos virtuais
vida artificial
Abstract in Portuguese
O trabalho reúne características relacionadas aos escopos de pesquisa de Vida e Inteligência Artificial, Ciência Cognitiva, e Realidade Virtual. O objetivo primordial é a concepção de um modelo de comportamento autônomo e adaptativo que permita a interação do personagem virtual num ambiente, mesmo dispondo de informações incertas e vagas. Sob esse intuito o projeto desenvolve a conciliação de recursos para tratarem a idéia de racionalizar sobre tais incertezas, promovendo assim, a capacidade de agir assumindo-se alguns riscos decorrentes desse caráter inexato. Por conseqüência, os humanos virtuais são capazes de observarem o ambiente no qual se situam, apresentarem representações internas e racionalizadas dessas informações incertas, que no trabalho são levantadas como crenças, e ainda tomarem decisões baseadas nessas informações. Através do processo de decisão o personagem é capaz de reavaliar as suas crenças; implicando em um comportamento maduro em decorrência dos procedimentos usados para deliberar e realizar ações em um ambiente virtual.
Title in English
Behavioral model based in belief and Bayesian theory for virtual humans simulation in artificial life.
Keywords in English
artificial life
Bayes
beliefs
comportamento autonomous behavior
virtual humans
Abstract in English
This work puts together features related to the research areas of Artificial Life, Artificial Intelligence, Cognitive Science and Virtual Reality. The main goal of this work is the conception of an adaptive and autonomous behavior model which alows the interaction, even with uncertain information, between a virtual character and an environment. Therefore, resources are organized to be handled rationally with uncertainties, thus, the ability to act assuming some risks of this inexact aspect are granted. The results enable the virtual humans to observe their environment, to present internal and rationalized representations of this uncertain information, represented in this work as beliefs, and taking decisions based on this information. Through the decision process, the character can re-evaluate its beliefs; which imply in a mature behavior, as a consequence of how procedures are used to deliberate and to perform actions in a virtual environment.
 
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MarcosCavalhieri.pdf (2.19 Mbytes)
Publishing Date
2006-05-18
 
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