{"pk":29906,"title":"Hierarchical Inferences Support Systematicity in the Lexicon","subtitle":null,"abstract":"Language exhibits striking systematicity in its form-meaningmappings: Similar meanings are assigned similar forms. Herewe study how systematicity relates to another well-studiedphenomenon, linguistic regularization, the removal of unpre-dictable variation in linguistic variants. Systematicity is ulti-mately a property of classes of form-meaning mappings, eachmember of which can be acted upon independently by linguis-tic regularization. Both are supported by a cognitive bias forsimplicity, but this leaves open the question of how they inter-act to structure the lexicon. Using data from a recent artificialgesture learning experiment by Verhoef, Padden, and Kirby(2016), we formalize cognitive biases at the item level and thelanguage level as inductive biases in a hierarchical Bayesianmodel. Simulated data from models that lack either one ofthose biases show how both are necessary to capture subjects’systematicity preferences. Our results bring conceptual clar-ity about the relationship between regularization and system-aticity and promote a multi-level approach to cognitive biasesin artificial language learning and language evolution.","language":"eng","license":{"name":"","short_name":"","text":null,"url":""},"keywords":[{"word":"systematicity; Bayesian modeling; regularization; signlanguage; artificial language learning"}],"section":"Poster Session 2","is_remote":true,"remote_url":"https://escholarship.org/uc/item/6jb5n9c2","frozenauthors":[{"first_name":"Matthias","middle_name":"","last_name":"Hofer","name_suffix":"","institution":"Massachusetts Institute of Technology","department":""},{"first_name":"Tessa","middle_name":"","last_name":"Verhoef","name_suffix":"","institution":"University of Leiden","department":""},{"first_name":"Roger","middle_name":"","last_name":"Levy","name_suffix":"","institution":"Massachusetts Institute of Technology","department":""}],"date_submitted":null,"date_accepted":null,"date_published":"2020-01-01T18:00:00Z","render_galley":null,"galleys":[{"label":"PDF","type":"pdf","path":"https://journalpub.escholarship.org/cognitivesciencesociety/article/29906/galley/19760/download/"}]}