Features and Values Lauri Karttunen author 1984-07 text 10th International Conference on Computational Linguistics and 22nd Annual Meeting of the Association for Computational Linguistics Association for Computational Linguistics Stanford, California, USA conference publication karttunen-1984-features 10.3115/980491.980499 https://aclanthology.org/P84-1008/ 1984-07 28 33