Combining Tree Structures, Flat Features and Patterns for Biomedical Relation Extraction Md. Faisal Mahbub Chowdhury author Alberto Lavelli author 2012-04 text Proceedings of the 13th Conference of the European Chapter of the Association for Computational Linguistics Walter Daelemans editor Association for Computational Linguistics Avignon, France conference publication chowdhury-lavelli-2012-combining https://aclanthology.org/E12-1043/ 2012-04 420 429