Qualitative Spatial Abstraction in Reinforcement Learning

Qualitative Spatial Abstraction in Reinforcement Learning

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Reinforcement learning has developed as a successful learning approach for domains that are not fully understood and that are too complex to be described in closed form. However, reinforcement learning does not scale well to large and continuous problems. Furthermore, acquired knowledge specific to the learned task, and transfer of knowledge to new tasks is crucial. In this book the author investigates whether deficiencies of reinforcement learning can be overcome by suitable abstraction methods. He discusses various forms of spatial abstraction, in particular qualitative abstraction, a form of representing knowledge that has been thoroughly investigated and successfully applied in spatial cognition research. With his approach, he exploits spatial structures and structural similarity to support the learning process by abstracting from less important features and stressing the essential ones. The author demonstrates his learning approach and the transferability of knowledge by having his system learn in a virtual robot simulation system and consequently transfer the acquired knowledge to a physical robot. The approach is influenced by findings from cognitive science. The book is suitable for researchers working in artificial intelligence, in particular knowledge representation, learning, spatial cognition, and robotics.4.2, even a subsumption of two states to one observation would be enough to achieve an abstraction, but of course this would not show a significant effect on learning performance. Obtaining a Discrete State Space. A complex control problemanbsp;...

Title:Qualitative Spatial Abstraction in Reinforcement Learning
Author: Lutz Frommberger
Publisher:Springer Science & Business Media - 2010-12-13

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