Laboratoire d'Informatique Industrielle

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Laboratory of Software Ingeneering Li2/ENIB, EA
2215/UBO, BREST, FRANCE
Action Learning for AutonomousVirtual Actors
Marc Parenthoën, Cédric Buche, Jacques Tisseau
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Plan

• Autonomous Virtual Actors

Principle of autonomy

• Simulation in the Simulation

Behavioral culture, Active perception

• Action Learning

Autonomous adaptation of behavior
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VR History
in virtuo
presence
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Towards Intrinsic Autonomous Models

• Deficiencies
• sensorial
• motor
• mental

• Abilities
• of perception
• of action
• of decision

• Autonomy
• of execution

? loss of autonomy
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FCMs Kosko86
Behavioral Modeling
specify behavior
control movement
fuzzyfication

• Explicative

perceptions

• Emotional

• Perceptive

• Predictive

actions

• Adaptative

defuzzyfication
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Reactive Virtual Actor
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Plan

• Autonomous Virtual Actors

• Simulation in the Simulation

Behavioral culture, Active perception

• Action Learning

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Behavioral Prototypes for Simulation

• Anticipation

• Choice of strategy

• Key for learning

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Active Perception Droulez Berthoz 88
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Predictive Virtual Actor

• behavioral model simulation

projection

• sensorimotor strategy choice

• active perception

strategy
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Plan

• Autonomous Virtual Actors

• Simulation in the Simulation

• Action Learning

Autonomous adaptation of behavior
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Virtual Gathering

• specific dog
• normal sheep
• remaining paranoiac

• another sheepdog
• shepherd driven
• specific sheep

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Behavioral Prototype-Based Imitation
Prey prototype from library

• predicted effectors

• calling into question (crisp choice)

• differential hebbian learning to update links

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Sheepdog Imagining a Stressed Sheep
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Autonomous Action Learning
selection by active perception
comparison
adaptation
modification
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Plan

• Autonomous Virtual Actors

• Simulation in the Simulation

• Action Learning

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European Center of Virtual Reality
Brest (France), september 2003
Questions ?
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Exploitation of Models
what IS the model
what does the model DO
Animation
Simulation
Model
Modeling
What BECOMES of the model
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User Status
cre-actor
actor
spectator
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Multi-Agent Systems

• Numerical model
• descriptive
• causal
• behavioral

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Participative Multi-Agent Systems

• VOWELS
• Agent
• Environment
• Interaction
• Organisation

• extended VOWELS
• User

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Reactive Virtual Skipper
HF strategy
LF fuzzyfication and dynamics
Adaptative Virtual Skipper
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Human and Virtual Helmsman

• associated to each affordance

• part of strategy

• no HF strategy