ANALISIS SENTIMEN MENGGUNAKAN METODE NAÏVE BAYES CLASSIFIER DENGAN SELEKSI FITUR CHI SQUARE

  • JUEN LING Faculty of Mathematics and Natural Sciences, Udayana University
  • I PUTU EKA N. KENCANA Faculty of Mathematics and Natural Sciences, Udayana University
  • TJOKORDA BAGUS OKA Faculty of Mathematics and Natural Sciences, Udayana University

Abstract

Sentiment analysis is the computational study of opinions, sentiments, and emotions expressed in texts. The basic task of sentiment analysis is to classify the polarity of the existing texts in documents, sentences, or opinions. Polarity has meaning if there is text in the document, sentence, or the opinion has a positive or negative aspect. In this study, classification of the polarity in sentiment analysis using machine learning techniques, that is Naïve Bayes classifier. Criteria for text classification decisions, learned automatically from learning the data. The need for manual classification is still required because training the data derived from manually labeling, the label (feature) refers to the process of adding a description of each data according to its category. In the process of labeling, feature selection is used and performed by chi-square feature selection, to reduce the disturbance (noise) in the classification. The results showed that the frequency of occurrences of the expected features in the true category and in the false category have an important role in the chi-square feature selection. Then classification breaking news by Naïve Bayes classifier obtained an accuracy of 83% and a harmonic average of 90.713%.

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Author Biographies

JUEN LING, Faculty of Mathematics and Natural Sciences, Udayana University
Mathematics Department, Faculty of Mathematics and Natural Sciences, Udayana University
I PUTU EKA N. KENCANA, Faculty of Mathematics and Natural Sciences, Udayana University
Mathematics Department, Faculty of Mathematics and Natural Sciences, Udayana University
TJOKORDA BAGUS OKA, Faculty of Mathematics and Natural Sciences, Udayana University
Mathematics Department, Faculty of Mathematics and Natural Sciences, Udayana University
Published
2014-08-29
How to Cite
LING, JUEN; N. KENCANA, I PUTU EKA; OKA, TJOKORDA BAGUS. ANALISIS SENTIMEN MENGGUNAKAN METODE NAÏVE BAYES CLASSIFIER DENGAN SELEKSI FITUR CHI SQUARE. E-Jurnal Matematika, [S.l.], v. 3, n. 3, p. 92 - 99, aug. 2014. ISSN 2303-1751. Available at: <https://ojs.unud.ac.id/index.php/mtk/article/view/11992>. Date accessed: 18 oct. 2021. doi: https://doi.org/10.24843/MTK.2014.v03.i03.p070.
Section
Articles

Keywords

chi square; classification; feature selection; machine learning technique; Naïve Bayes; sentiment analysis

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