Text minig in the National Transparency Survey 2019

 

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Dettagli Bibliografici
Autori: Centeno-Mora, Oscar, Gónzalez-Évora, Felipe
Natura: artículo original
Status:Versión publicada
Data di pubblicazione:2022
Descrizione:Coding and analyzing open-ended questions from opinion survey is often time consuming. Text mining offers an alternative for this type of problem. Data comes from the 2019 National Survey of Perception on Transparency open-ended questions. Text mining is applied from a descriptive and predictive approach: the latter has a predominant interest in performing the automatic coding of responses or categories using supervised machine learning. Support vector machine algorithms, naïve Bayes classifier, random forests, XGBoost, and closest neighbors are used. The results of the descriptive analysis improve the descriptions, visualizations and relationships in the analysis of the open-ended questions. The predictive analysis reports that the algorithms with the highest selection occurrence for the open-ended questions were the naive Bayes classifier and the random forests, showing accuracies between 48% and 76%. Similar results were obtained compared with the pre-established categories. Satisfactory results are seen in the comprehensive analysis of the 12 survey questions.
Stato:Portal de Revistas UCR
Istituzione:Universidad de Costa Rica
Repositorio:Portal de Revistas UCR
Lingua:Español
OAI Identifier:oai:portal.ucr.ac.cr:article/46379
Accesso online:https://revistas.ucr.ac.cr/index.php/matematica/article/view/46379
Keyword:opinion surveys
open questions
text mining
supervised machine learning
encuesta de opinión
preguntas abiertas
minería de texto
aprendizaje automático supervisado