title: A parameter control method in reinforcement learning to rapidly follow unexpected environmental changes.
abstract: In order to rapidly follow unexpected environmental changes, we propose a parameter control method in reinforcement learning that changes each of learning parameters in appropriate directions. We determine each appropriate direction on the basis of relationships between behaviors and neuromodulators by considering an emergency as a key word. Computer experiments show that the agents using our proposed method could rapidly respond to unexpected environmental changes, not depending on either two reinforcement learning algorithms (Q-learning and actor-critic (AC) architecture) or two learning problems (discontinuous and continuous state-action problems).
authors.affiliation: Department of Knowledge-based Information Engineering, Toyohashi University of Technology, 1-1 Hibarigaoka, Tenpaku-cho, Toyohashi 441-8580, Japan. mura@tutkie.tut.ac.jp
authors.forename: Kazushi
authors.initials: K
authors.lastname: Murakoshi
authors.forename: Junya
authors.initials: J
authors.lastname: Mizuno
mesh_terms: D000222:Adaptation, Physiological; D000465:Algorithms; D001185:Artificial Intelligence; D003198:Computer Simulation; D004777:Environment; D005246:Feedback; D008959:Models, Neurological; D015233:Models, Statistical; D012054:Reinforcement, Psychology; D012371:Robotics / Q000379:methods*; D013269:Stochastic Processes