Crash narrative classification: Identifying agricultural crashes using machine learning with curated keywords.

Traffic Injury Prevention
Jisung KimEva Monique Shipp

Abstract

Traditionally, structured or coded data fields from a crash report are the basis for identifying crashes involving different types of vehicles, such as farm equipment. However, using only the structured data can lead to misclassification of vehicle or crash type. The objective of the current article is to examine the use of machine learning methods for identifying agricultural crashes based on the crash narrative and to transfer the application of models to different settings (e.g., future years of data, other states). Different data representations (e.g., bag-of-words [BoW], bag-of-keywords [BoK]) and document classification algorithms (e.g., support vector machine [SVM], multinomial naïve Bayes classifier [MNB]) were explored using Texas and Louisiana crash narratives across different time periods. The BoK-support vector classifier (SVC), BoK-MNB, and BoW-SVC models trained with Texas data were better predictive models than the baseline rule-based algorithm on the future year test data, with F1 scores of 0.88, 0.89, 0.85 vs. 0.84. The BoK-MNB trained with Louisiana data performed the closest to the baseline rule-based algorithm on the future year test data (F1 scores, 0.91 baseline rule-based algorithm vs. 0.89 BoK-MNB). The ...Continue Reading

References

Nov 1, 1996·Journal of Occupational and Environmental Medicine·S G GerberichC Renier
Sep 18, 2007·The Journal of Rural Health : Official Journal of the American Rural Health Association and the National Rural Health Care Association·Corinne Peek-AsaCraig Zwerling
May 6, 2010·Accident; Analysis and Prevention·Konstantina GkritzaNeal Hawkins
Jul 29, 2016·Epidemiology·Shabbar I RanapurwalaMarizen R Ramirez
Dec 7, 2017·Traffic Injury Prevention·Karisa K HarlandMarizen Ramirez
May 11, 2019·Traffic Injury Prevention·Amber Brooke TruebloodEva Monique Shipp

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Software Mentioned

Snowball
NLTK Python
MNB
GridSearchCV
BoK

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