{"pk":28190,"title":"Multilayer Context Reasoning in a Neurobiologically Inspired Working Memory Model for Cognitive Robots","subtitle":null,"abstract":"The brain’s working memory system relies heavily on themesolimbic dopamine system and the delivery of reward sig-nals. The interaction between the prefrontal cortex (PFC) andthe basal ganglia are the main components simulated in work-ing memory models. The Working Memory Toolkit (WMtk) isa framework that allows the incorporation of working memoryinto robotic/artificial systems. The HWMtk is built on top ofWMtk by using holographic reduced representations for con-cept encoding. This allows end users to adopt the frameworkwithout the need to understand details of the algorithms in-volved. While the HWMtk captures human and animal per-formance on some cognitive tasks, tasks with multiple con-text layers are still problematic. We extended the HWMtkframework by adding a multilayer context reasoning work-ing memory system. We tested our system on the AX-CPTtask, 1-2-AX-CPT task and a 2-layer context task that is par-tially observable. Our results show that our model is capableof learning after a reasonable number of trials, thus making itamenable for comparison with human and animal performancedata.","language":"eng","license":{"name":"","short_name":"","text":null,"url":""},"keywords":[{"word":"artificial cognition; cognitive robotics; workingmemory; prefrontal cortex; dopamine; reinforcement learning"}],"section":"Publication-based-Talks","is_remote":true,"remote_url":"https://escholarship.org/uc/item/95c1379g","frozenauthors":[{"first_name":"Arthur","middle_name":"S","last_name":"Williams","name_suffix":"","institution":"Middle Tennessee State University","department":""},{"first_name":"Joshua","middle_name":"L","last_name":"Phillips","name_suffix":"","institution":"Middle Tennessee State University","department":""}],"date_submitted":null,"date_accepted":null,"date_published":"2018-01-01T13:00:00-05:00","render_galley":null,"galleys":[{"label":"PDF","type":"pdf","path":"https://journalpub.escholarship.org/cognitivesciencesociety/article/28190/galley/17849/download/"}]}