Abstract

The large volume of data and its complexity in educational institutions require the sakes from informative technologies. In order to facilitate this task, many researchers have focused on using machine learning to extract knowledge from the education database to support students and instructors in getting better performance. In prediction models, the challenging task is to choose the effective techniques which could produce satisfying predictive accuracy. Hence, in this work, we introduced a hybrid approach of principal component analysis (PCA) as conjunction with four machines learning (ML) algorithms: random forest (RF), C5.0 of decision tree (DT), and naïve Bayes (NB) of Bayes network and support vector machine (SVM), to improve the performances of classification by solving the misclassification problem. Three datasets were used to confirm the robustness of the proposed models. Through the given datasets, we evaluated the classification accuracy and root mean square error (RSME) as evaluation metrics of the proposed models. In this classification problem, 10-fold cross-validation was proposed to evaluate the predictive performance. The proposed hybrid models produced very prediction results which shown itself as the optimal prediction and classification algorithms.

Highlights

  • The poor performance of students in high school has become a worried-task for educators as it affects the secondary national exam and step to higher education

  • We introduced 10-fold cross-validation is to evaluate the predictive performance of the models and to judge how they perform in a new dataset, the testing samples or test data

  • In order to improve the performance of the proposed machine learning algorithms, we proposed commonly-used feature extraction approach: principal component analysis (PCA) in this study

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Summary

Introduction

The poor performance of students in high school has become a worried-task for educators as it affects the secondary national exam and step to higher education. Students who are poor in mathematics are much more likely to fail in diploma national exams in Cambodia [2]. They later found themselves harder to choose a major for higher study and hard to survive in the university journey. There are various factors affect the performance of students in mathematics; those factors consist of schooling factors, domestics or home factors, and personal or individual factors. These related factors were used as predictive features in predicting the achievement of students in mathematics

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