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AMIA Annu Symp Proc. 2017 Feb 10;2016:1238-1247. eCollection 2016.

Differentiating Sense through Semantic Interaction Data.

Author information

1
VA Salt Lake City Health Care, Salt Lake City, Utah; Division of Epidemiology, University of Utah, Salt Lake City, UT.
2
VA Salt Lake City Health Care, Salt Lake City, Utah; Department of Biomedical Informatics, University of Utah, Salt Lake City, UT.
3
Lister Hill National Center for Biomedical Communications, National Library of Medicine, National Institutes of Health, Bethesda, MD.

Abstract

Words which have different representations but are semantically related, such as dementia and delirium, can pose difficult issues in understanding text. We explore the use of interaction frequency data between semantic elements as a means to differentiate concept pairs, using semantic predications extracted from the biomedical literature. We applied datasets of features drawn from semantic predications for semantically related pairs to two Expectation Maximization clustering processes (without, and with concept labels), then used all data to train and evaluate several concept classifying algorithms. For the unlabeled datasets, 80% displayed expected cluster count and similar or matching proportions; all labeled data exhibited similar or matching proportions when restricting cluster count to unique labels. The highest performing classifier achieved 89% accuracy, with F1 scores for individual concept classification ranging from 0.69 to 1. We conclude with a discussion on how these findings may be applied to natural language processing of clinical text.

PMID:
28269921
PMCID:
PMC5333208
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