Stacked Generalization for Medical Concept Extraction from Clinical Notes Youngjun Kim author Ellen Riloff author 2015-07 text Proceedings of BioNLP 15 Kevin Bretonnel Cohen editor Dina Demner-Fushman editor Sophia Ananiadou editor Jun-ichi Tsujii editor Association for Computational Linguistics Beijing, China conference publication kim-riloff-2015-stacked 10.18653/v1/W15-3807 https://aclanthology.org/W15-3807/ 2015-07 61 70