NCU IISR System for NTCIR-11 MedNLP-2 Task

paper describes NCU IISR's Japanese ICD-10 Code Linking system for NTCIR-11 MedNLP. Our system uses Conditional Random Fields (CRFs) to label ICD-10 mentions and temporal expressions. We also use CRFs to detect the modalities of the ICD-10 mentions. To resolve the problem of ICD-10 mention normalization, we use the Lucene engine to link mentions to the corresponding ICD-10 database entries. Evaluated on the MedNLP test set, our system achieved f-scores of 79.96% for ICD-10 term recognition, 67.64% for time expression and 69.4% for ICD- 10 mention normalization. Team Name IISR