APLICAÇÃO DE TÉCNICAS DE INTELIGÊNCIA ARTIFICIAL PARA CLASSIFICAÇÃO DE FUGA AO TEMA EM REDAÇÕES

Abstract

ABSTRACT: The process of manual correction of essays causes some difficulties, among which we point out the time spent for correction and feedback to the student. For institutions such as elementary schools, universities, and the National High School Exam in Brazil (Enem), such activity demands time and cost for the evaluation of the texts produced. Going off-topic is one of the items evaluated in the Enem essay that can nullify the whole essay produced by the candidate. In this context, the automatic analysis of essays with the application of techniques and methods of Natural Language Processing, Text Mining, and other Artificial Intelligence techniques has shown to be promising in the process of automated evaluation of written language. The goal of this research is to compare different AI techniques for the classification of going off-topic in texts and identify the one with the best result to enable a smart correction system for essays. Therefore, computer experiments were carried out to classify these texts to normalize, identify patterns, and classify the essays in 1,320 Brazilian Portuguese essays on 119 different topics. The results indicate that the Convolutional Neural Network classifier obtained greater gain concerning the other classifiers analyzed, both in accuracy and about the results of false positives, the precision of metrics, Recall, and F1-Score. In conclusion, the solution validated in this research contributes to positively impacting the work of teachers and educational institutions, by reducing the time and costs associated with the essay evaluation process.