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Journal : Journal of Computer Science and Informatics Engineering (J-Cosine)

Classification of Local Fruit Types using Convolutional Neural Network Method (Study Case: Lombok Island) Moh. Azzam Al Husaini; Ario Yudo Husodo; Fitri Bimantoro
Journal of Computer Science and Informatics Engineering (J-Cosine) Vol 8 No 2 (2024): Desember 2024
Publisher : Informatics Engineering Dept., Faculty of Engineering, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jcosine.v8i2.601

Abstract

Indonesia, with its natural beauty and abundant resources, has significant potential for producing food and horticultural crops, particularly on Lombok Island, West Nusa Tenggara. This region is crucial in supplying tropical fruits such as Mangosteen, Pisang Kepok, and Rambutan Lebak Bulus. However, the agricultural sector in NTB faces challenges in post-harvest handling, especially in classifying fruit ripeness, impacting distribution and supply sustainability. To address this, researchers developed a fruit classification model using digital image processing with the Convolutional Neural Network (CNN) method. This model serves as a preliminary step before creating a fruit maturity classification model. Evaluation results showed that the RGB format model achieved 95% accuracy, while the HSV format reached 97%. Comparing three models in HSV format revealed: the proposed model (0.97), MobileNetV2 (0.96), and ResNet50 (0.97). These results indicate that implementing this model could enhance post-harvest efficiency in NTB, ensuring better fruit supply management.
Comparative Analysis of Proposed CNN Performance with CNN and Naive Bayes from Kaggle in ChatGPT Tweet Sentiment Analysis Alwi Pratama; Ario Yudo Husodo; Fitri Bimantoro
Journal of Computer Science and Informatics Engineering (J-Cosine) Vol 9 No 2 (2025): December 2025
Publisher : Informatics Engineering Dept., Faculty of Engineering, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jcosine.v9i2.629

Abstract

The rapid growth of social media platforms such as Twitter has led to an increasing demand for efficient sentiment analysis methods. This study focuses on the performance comparison of the CNN-based sentiment analysis model developed by the authors with two models sourced from Kaggle; CNN model and Naive Bayes model. In addition, ChatGPT is used as a reference in discourse exploration and sentiment analysis strategy development. ChatGPT is used to answer user questions, generate code, revise journals and the like. Performance evaluation is done in terms of inference time and accuracy. The findings reveal that the CNN model developed by the authors achieves superior accuracy compared to the CNN model from Kaggle, while the inference time developed by the authors shows a significant difference with a much higher number when compared to the Naive Bayes model from Kaggle. This analysis highlights the trade-off between efficiency and accuracy in sentiment analysis tasks and provides insights for selecting the right model based on current trends in data analysis.