Raúl García-Castro
2017
Role-based model for Named Entity Recognition
Pablo Calleja | Raúl García-Castro | Guadalupe Aguado-de-Cea | Asunción Gómez-Pérez
Proceedings of the International Conference Recent Advances in Natural Language Processing, RANLP 2017
Pablo Calleja | Raúl García-Castro | Guadalupe Aguado-de-Cea | Asunción Gómez-Pérez
Proceedings of the International Conference Recent Advances in Natural Language Processing, RANLP 2017
Named Entity Recognition (NER) poses new challenges in real-world documents in which there are entities with different roles according to their purpose or meaning. Retrieving all the possible entities in scenarios in which only a subset of them based on their role is needed, produces noise on the overall precision. This work proposes a NER model that relies on role classification models that support recognizing entities with a specific role. The proposed model has been implemented in two use cases using Spanish drug Summary of Product Characteristics: identification of therapeutic indications and identification of adverse reactions. The results show how precision is increased using a NER model that is oriented towards a specific role and discards entities out of scope.