Historical Analysis of Legal Opinions with a Sparse Mixed-Effects Latent Variable Model William Yang Wang author Elijah Mayfield author Suresh Naidu author Jeremiah Dittmar author 2012-07 text Proceedings of the 50th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers) Haizhou Li editor Chin-Yew Lin editor Miles Osborne editor Gary Geunbae Lee editor Jong C Park editor Association for Computational Linguistics Jeju Island, Korea conference publication wang-etal-2012-historical https://aclanthology.org/P12-1078/ 2012-07 740 749