Title
Automated Learning of Temporal Expressions.
Abstract
Clinical notes contain important temporal information that are critical for making clinical diagnosis and treatment as well as for retrospective analyses. Manually created regular expressions are commonly used for the extraction of temporal information; however, this can be a time consuming and brittle approach. We describe a novel algorithm for automatic learning of regular expressions in recognizing temporal expressions. Five classes of temporal expressions are identified. Keywords specific to those classes are used to retrieve snippets of text representing the same keywords in context. Those snippets are used for Regular Expression Discovery Extraction (REDEx). These learned regular expressions are then evaluated using 10-fold cross validation. Precision and recall are very high, above 0.95 for most classes.
Year
DOI
Venue
2015
10.3233/978-1-61499-564-7-639
Studies in Health Technology and Informatics
Keywords
Field
DocType
Electronic Medical Record,Machine Learning
Data mining,Regular expression,Computer science,Precision and recall,Temporal expressions,Automatic learning,Natural language processing,Artificial intelligence,Clinical diagnosis,Cross-validation,Semantics
Conference
Volume
ISSN
Citations 
216
0926-9630
0
PageRank 
References 
Authors
0.34
0
5
Name
Order
Citations
PageRank
Douglas Redd100.68
YiJun Shao200.34
Jing Yang300.34
Guy Divita413824.59
Qing Zeng-Treitler518423.10