Developing dynamic field theory architectures for embodied cognitive systems with \(\it cedar\)

  • Embodied artificial cognitive systems, such as autonomous robots or intelligent observers, connect cognitive processes to sensory and effector systems in real time. Prime candidates for such embodied intelligence are neurally inspired architectures. While components such as forward neural networks are well established, designing pervasively autonomous neural architectures remains a challenge. This includes the problem of tuning the parameters of such architectures so that they deliver specified functionality under variable environmental conditions and retain these functions as the architectures are expanded. The scaling and autonomy problems are solved, in part, by dynamic field theory (DFT), a theoretical framework for the neural grounding of sensorimotor and cognitive processes. In this paper, we address how to efficiently build DFT architectures that control embodied agents and how to tune their parameters so that the desired cognitive functions emerge while such agents are situated in real environments. In DFT architectures, dynamic neural fields or nodes are assigned dynamic regimes, that is, attractor states and their instabilities, from which cognitive function emerges. Tuning thus amounts to determining values of the dynamic parameters for which the components of a DFT architecture are in the specified dynamic regime under the appropriate environmental conditions. The process of tuning is facilitated by the software framework cedar, which provides a graphical interface to build and execute DFT architectures. It enables to change dynamic parameters online and visualize the activation states of any component while the agent is receiving sensory inputs in real time. Using a simple example, we take the reader through the workflow of conceiving of DFT architectures, implementing them on embodied agents, tuning their parameters, and assessing performance while the system is coupled to real sensory inputs.

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Metadaten
Author:Oliver LompGND, Mathis Marius RichterGND, Stephan ZibnerGND, Gregor SchönerORCiDGND
URN:urn:nbn:de:hbz:294-70029
DOI:https://doi.org/10.3389/fnbot.2016.00014
Parent Title (English):Frontiers in neurorobotics
Publisher:Frontiers Research Foundation
Place of publication:Lausanne
Document Type:Article
Language:English
Date of Publication (online):2020/02/17
Date of first Publication:2016/11/02
Publishing Institution:Ruhr-Universität Bochum, Universitätsbibliothek
Tag:artificial cognitive systems; attractors; autonomous robots; dynamic field theory; dynamic instabilities; neural dynamics
Volume:10
First Page:14-1
Last Page:14-18
Institutes/Facilities:Institut für Neuroinformatik, Lehrstuhl Theorie kognitiver Systeme
open_access (DINI-Set):open_access
Licence (English):License LogoCreative Commons - CC BY 4.0 - Attribution 4.0 International