Spontaneous Lexicon Change Luc Steels author Frederic Kaplan author 1998-08 text 36th Annual Meeting of the Association for Computational Linguistics and 17th International Conference on Computational Linguistics, Volume 2 Association for Computational Linguistics Montreal, Quebec, Canada conference publication steels-kaplan-1998-spontaneous-lexicon 10.3115/980691.980772 https://aclanthology.org/P98-2203/ 1998-08 1243 1250