Natural Language Processing and the Representation of Clinical Data
- 1 March 1994
- journal article
- review article
- Published by Oxford University Press (OUP) in Journal of the American Medical Informatics Association
- Vol. 1 (2), 142-160
- https://doi.org/10.1136/jamia.1994.95236145
Abstract
Objective: Develop a representation of clinical observations and actions and a method of processing free-text patient documents to facilitate applications such as quality assurance. Design: The Linguistic String Project (LSP) system of New York University utilizes syntactic analysis, augmented by a sublanguage grammar and an information structure that are specific to the clinical narrative, to map free-text documents into a database for querying. Measurements: Information precision (I-P) and information recall (I-R) were measured for queries for the presence of 13 asthma-health-care quality assurance criteria in a database generated from 59 discharge letters. Results: I-P, using counts of major errors only, was 95.7% for the 28-letter training set and 98.6% for the 31-letter test set. I-R, using counts of major omissions only, was 93.9% for the training set and 92.5% for the test set.Keywords
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