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Using Ensemble Models to Classify the Sentiment Expressed in Suicide Notes
In 2007, suicide was the tenth leading cause of death in the U.S. Given the significance of this problem, suicide was the focus of the 2011 Informatics for Integrating Biology and the Bedside (i2b2) Natural Language Processing (NLP) shared task competition (track two). Specifically, the challenge co...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Libertas Academica
2012
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3409473/ https://www.ncbi.nlm.nih.gov/pubmed/22879763 http://dx.doi.org/10.4137/BII.S8931 |
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author | McCart, James A. Finch, Dezon K. Jarman, Jay Hickling, Edward Lind, Jason D. Richardson, Matthew R. Berndt, Donald J. Luther, Stephen L. |
author_facet | McCart, James A. Finch, Dezon K. Jarman, Jay Hickling, Edward Lind, Jason D. Richardson, Matthew R. Berndt, Donald J. Luther, Stephen L. |
author_sort | McCart, James A. |
collection | PubMed |
description | In 2007, suicide was the tenth leading cause of death in the U.S. Given the significance of this problem, suicide was the focus of the 2011 Informatics for Integrating Biology and the Bedside (i2b2) Natural Language Processing (NLP) shared task competition (track two). Specifically, the challenge concentrated on sentiment analysis, predicting the presence or absence of 15 emotions (labels) simultaneously in a collection of suicide notes spanning over 70 years. Our team explored multiple approaches combining regular expression-based rules, statistical text mining (STM), and an approach that applies weights to text while accounting for multiple labels. Our best submission used an ensemble of both rules and STM models to achieve a micro-averaged F(1) score of 0.5023, slightly above the mean from the 26 teams that competed (0.4875). |
format | Online Article Text |
id | pubmed-3409473 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2012 |
publisher | Libertas Academica |
record_format | MEDLINE/PubMed |
spelling | pubmed-34094732012-08-09 Using Ensemble Models to Classify the Sentiment Expressed in Suicide Notes McCart, James A. Finch, Dezon K. Jarman, Jay Hickling, Edward Lind, Jason D. Richardson, Matthew R. Berndt, Donald J. Luther, Stephen L. Biomed Inform Insights Original Research In 2007, suicide was the tenth leading cause of death in the U.S. Given the significance of this problem, suicide was the focus of the 2011 Informatics for Integrating Biology and the Bedside (i2b2) Natural Language Processing (NLP) shared task competition (track two). Specifically, the challenge concentrated on sentiment analysis, predicting the presence or absence of 15 emotions (labels) simultaneously in a collection of suicide notes spanning over 70 years. Our team explored multiple approaches combining regular expression-based rules, statistical text mining (STM), and an approach that applies weights to text while accounting for multiple labels. Our best submission used an ensemble of both rules and STM models to achieve a micro-averaged F(1) score of 0.5023, slightly above the mean from the 26 teams that competed (0.4875). Libertas Academica 2012-01-30 /pmc/articles/PMC3409473/ /pubmed/22879763 http://dx.doi.org/10.4137/BII.S8931 Text en © the author(s), publisher and licensee Libertas Academica Ltd. This is an open access article. Unrestricted non-commercial use is permitted provided the original work is properly cited. |
spellingShingle | Original Research McCart, James A. Finch, Dezon K. Jarman, Jay Hickling, Edward Lind, Jason D. Richardson, Matthew R. Berndt, Donald J. Luther, Stephen L. Using Ensemble Models to Classify the Sentiment Expressed in Suicide Notes |
title | Using Ensemble Models to Classify the Sentiment Expressed in Suicide Notes |
title_full | Using Ensemble Models to Classify the Sentiment Expressed in Suicide Notes |
title_fullStr | Using Ensemble Models to Classify the Sentiment Expressed in Suicide Notes |
title_full_unstemmed | Using Ensemble Models to Classify the Sentiment Expressed in Suicide Notes |
title_short | Using Ensemble Models to Classify the Sentiment Expressed in Suicide Notes |
title_sort | using ensemble models to classify the sentiment expressed in suicide notes |
topic | Original Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3409473/ https://www.ncbi.nlm.nih.gov/pubmed/22879763 http://dx.doi.org/10.4137/BII.S8931 |
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