A corpus of clinical narratives annotated with temporal information

Clinical reports often include descriptions of events in the patient’s medical history, as well as explicit or implicit temporal information about these events. We are working towards applying deep Natural Language Processing tools towards understanding such narratives. This requires both the extraction and classification of the relevant events, and the placing of those events in time, or at least in relation to one another. Although several corpora of news data exist that have been annotated using the TimeML schema, similar corpora of clinical reports are not readily available. In this paper we report on the design of a small corpus and the annotation schema we developed, based on data from the fourth i2b2/VA challenge. These data include, among others, annotations for medical problems, tests, and treatments in clinical reports from several healthcare institutions. We have selected a subset of clinical reports and added annotations similar to those used in the TempEval tasks for t...

• Type: Journal
• Year: 2012
• Where: IHI
• Authors: Lucian Galescu, Nate Blaylock
• Keywords: Healthcare, IHI 2012, Natural Language Processing, Natural Language Processing Tools, Time Expressions