Statistical Confidence Measures for Probabilistic Parsing Ricardo Sánchez-Sáez author Joan-Andreu Sánchez author José-Miguel Benedí Ruíz author 2009-09 text Proceedings of the International Conference RANLP-2009 Galia Angelova editor Ruslan Mitkov editor Association for Computational Linguistics Borovets, Bulgaria conference publication sanchez-saez-etal-2009-statistical https://aclanthology.org/R09-1070/ 2009-09 388 392