Internal and external pressures on language emergence: least effort, object constancy and frequency Diana Rodríguez Luna author Edoardo Maria Ponti author Dieuwke Hupkes author Elia Bruni author 2020-11 text Findings of the Association for Computational Linguistics: EMNLP 2020 Trevor Cohn editor Yulan He editor Yang Liu editor Association for Computational Linguistics Online conference publication rodriguez-luna-etal-2020-internal 10.18653/v1/2020.findings-emnlp.397 https://aclanthology.org/2020.findings-emnlp.397/ 2020-11 4428 4437