Learning Orthographic Features in Bi-directional LSTM for Biomedical Named Entity Recognition Nut Limsopatham author Nigel Collier author 2016-12 text Proceedings of the Fifth Workshop on Building and Evaluating Resources for Biomedical Text Mining (BioTxtM2016) Sophia Ananiadou editor Riza Batista-Navarro editor Kevin Bretonnel Cohen editor Dina Demner-Fushman editor Paul Thompson editor The COLING 2016 Organizing Committee Osaka, Japan conference publication limsopatham-collier-2016-learning https://aclanthology.org/W16-5102/ 2016-12 10 19