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A Framework for Hierarchical Perception–Action Learning Utilizing Fuzzy Reasoning
University of Surrey, Guildford, U.K..
Linköping University, Department of Electrical Engineering, Computer Vision. Linköping University, The Institute of Technology.ORCID iD: 0000-0002-6096-3648
University of Surrey, Guildford, U.K..
2013 (English)In: IEEE transactions on systems, man and cybernetics. Part B. Cybernetics, ISSN 1083-4419, E-ISSN 1941-0492, Vol. 43, no 1, 155-169 p.Article in journal (Refereed) Published
Abstract [en]

Perception-action (P-A) learning is an approach to cognitive system building that seeks to reduce the complexity associated with conventional environment-representation/action-planning approaches. Instead, actions are directly mapped onto the perceptual transitions that they bring about, eliminating the need for intermediate representation and significantly reducing training requirements. We here set out a very general learning framework for cognitive systems in which online learning of the P-A mapping may be conducted within a symbolic processing context, so that complex contextual reasoning can influence the P-A mapping. In utilizing a variational calculus approach to define a suitable objective function, the P-A mapping can be treated as an online learning problem via gradient descent using partial derivatives. Our central theoretical result is to demonstrate top-down modulation of low-level perceptual confidences via the Jacobian of the higher levels of a subsumptive P-A hierarchy. Thus, the separation of the Jacobian as a multiplying factor between levels within the objective function naturally enables the integration of abstract symbolic manipulation in the form of fuzzy deductive logic into the P-A mapping learning. We experimentally demonstrate that the resulting framework achieves significantly better accuracy than using P-A learning without top-down modulation. We also demonstrate that it permits novel forms of context-dependent multilevel P-A mapping, applying the mechanism in the context of an intelligent driver assistance system.

Place, publisher, year, edition, pages
IEEE , 2013. Vol. 43, no 1, 155-169 p.
Keyword [en]
Autonomous agents, fuzzy logic (FL), hierarchical systems, machine learning, online learning, perception–action (P–A) learning, subsumption architectures, vehicle safety
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-85688DOI: 10.1109/TSMCB.2012.2202109ISI: 000317643500013OAI: oai:DiVA.org:liu-85688DiVA: diva2:572598
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DIPLECSGARNICSCUAS
Available from: 2012-11-28 Created: 2012-11-28 Last updated: 2017-12-07

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Felsberg, Michael

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Citation style
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More styles
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