{"pk":31779,"title":"Where Does Systematicity Come From","subtitle":null,"abstract":"H u m a n language and m e m o r y are only quasi-system-\natic. They are composed of context free\n(systematic) niappings, context sensitive mappings,\nand idiosyncrasies. Consequently, generalizations to\nnovel stimuli m a y be systematic if ihey result from\nthe context free mappings or m a y Ixxome\n\"regularized\" toward k n o w n stimuli if they result\nfrom the context sensitive mappings. T w o factors\nthat affect the degree of systematicity are the su-uc-\nture of the training corpus and the amount of atten-\ntion or vigilance paid to the task. M o r e systematic\nuaining corpora and more attention produce more\nsystematic responses and fewer specific context sen-\nsitive regularizations. A simple P D P model is used\nto demonstrate these phenomena. A 3-layer feedfor-\nward network learns an auto-associative mapping.\nUntrained stimuli are tested to see if the model\nwill respond with the systematic generalization or\nwith a specific regularization by activating the out-\nput pattern for the nearest trained neighbor.","language":"eng","license":{"name":"","short_name":"","text":null,"url":""},"keywords":[],"section":"Submitted Presentations","is_remote":true,"remote_url":"https://escholarship.org/uc/item/285643f5","frozenauthors":[{"first_name":"Mark","middle_name":"F.","last_name":"St. John","name_suffix":"","institution":"University of California, San Diego","department":""}],"date_submitted":null,"date_accepted":null,"date_published":"1993-01-01T18:00:00Z","render_galley":null,"galleys":[{"label":"PDF","type":"pdf","path":"https://journalpub.escholarship.org/cognitivesciencesociety/article/31779/galley/22847/download/"}]}