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An evolutionary behavioral model for decision making

Romero Lopez, Dr Oscar Javier (2011) An evolutionary behavioral model for decision making. [Journal (Paginated)]

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Abstract

For autonomous agents the problem of deciding what to do next becomes increasingly complex when acting in unpredictable and dynamic environments pursuing multiple and possibly conflicting goals. One of the most relevant behavior-based model that tries to deal with this problem is the one proposed by Maes, the Bbehavior Network model. This model proposes a set of behaviors as purposive perception-action units which are linked in a nonhierarchical network, and whose behavior selection process is orchestrated by spreading activation dynamics. In spite of being an adaptive model (in the sense of self-regulating its own behavior selection process), and despite the fact that several extensions have been proposed in order to improve the original model adaptability, there is not a robust model yet that can self-modify adaptively both the topological structure and the functional purpose of the network as a result of the interaction between the agent and its environment. Thus, this work proffers an innovative hybrid model driven by gene expression programming, which makes two main contributions: (1) given an initial set of meaningless and unconnected units, the evolutionary mechanism is able to build well-defined and robust behavior networks which are adapted and specialized to concrete internal agent's needs and goals; and (2) the same evolutionary mechanism is able to assemble quite complex structures such as deliberative plans (which operate in the long-term) and problem-solving strategies.

Item Type:Journal (Paginated)
Keywords:Intelligent and autonomous agents, adaptive behavior, automated planning, behavior networks, evolutionary computation, gene expression programming
Subjects:Biology > Behavioral Biology
Computer Science > Artificial Intelligence
Computer Science > Complexity Theory
Computer Science > Machine Learning
Computer Science > Robotics
ID Code:8015
Deposited By: Romero López, Dr. Oscar J.
Deposited On:09 Nov 2012 19:23
Last Modified:09 Nov 2012 19:23

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