Implementation of the Naive Bayes Classifier Algorithm for Classifying Toddler Nutritional Status

Muhammad Insan Kamil; Adityo Permana Wibowo

doi:10.30871/jaic.v8i2.8669

Muhammad Insan Kamil University of Technology Yogyakarta
Adityo Permana Wibowo University of Technology Yogyakarta

DOI: https://doi.org/10.30871/jaic.v8i2.8669

Keywords: Naive Bayes Classifier, Nutritional Status, Toddlers, Malnutrition, Class Imbalance

Abstract

This research addresses the pressing issue of malnutrition among toddlers in Indonesia, aiming to classify their nutritional status using the Naive Bayes Classifier (NBC). The study utilizes a dataset comprising 958 records from Puskesmas Cilandak and categorizes nutritional status into six class labels: good nutrition, at risk of excess nutrition, excess nutrition, obesity, undernutrition, and severe malnutrition. The methodology includes data preprocessing techniques such as class weighting to tackle class imbalance and Principal Component Analysis (PCA) for effective feature extraction. The model's performance is evaluated using metrics such as accuracy, precision, recall, and F1 score, achieving an impressive accuracy of 85.76% when class weighting is applied, which significantly enhances the recall and F1 scores for minority classes. The findings highlight the critical importance of robust preprocessing and evaluation metrics in improving machine learning models for public health applications. Furthermore, they suggest that further exploration of alternative algorithms and dataset expansion could yield more comprehensive insights into the classification of toddler nutritional status.

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