Preserving Trees in Minimal Automata Jan Daciuk author 2015 text Proceedings of the 12th International Conference on Finite-State Methods and Natural Language Processing 2015 (FSMNLP 2015 Düsseldorf) Thomas Hanneforth editor Christian Wurm editor Association for Computational Linguistics conference publication daciuk-2015-preserving https://aclanthology.org/W15-4802/ 2015