A search based method for clinical text coreference resolution

TitleA search based method for clinical text coreference resolution
Publication TypeConference Paper
Year of Publication2011
AuthorsGlinos, D.
Conference NameProceedings of the 2011 i2b2/VA/Cincinnati Workshop on Challenges in Natural Language Processing for Clinical Data. Boston, MA, USA: i2b2
KeywordsCoreference Resolution, i2b2

This paper describes a novel method and system developed to address the coreference task of the 2011 i2b2 NLP Challenge, which involved analyzing clinical texts of several types and identifying the coreferential mentions within them. The method uses an open source search library component to do the heavy lifting for string matching, allowing a lightweight rule-based processing engine to cluster the concept mentions in an almost entirely annotation-agnostic manner. The system performed well against the challenge test data set, which included documents from multiple clinical sources that were annotated according to both i2b2 and ODIE guidelines, and achieved the best overall score against the ODIE test data. The results show promise for further investigation of the approach.