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All Journal JOURNAL OF APPLIED INFORMATICS AND COMPUTING Cahaya Pengabdian
Akbari, Rifqy Willy
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Computer Science & IT Education Social Sciences Other

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Comparative Study of LSTM and GRU Accuracy in Predicting BBRI Stock Closing Price Akbari, Rifqy Willy; Prayogo, Adam; Jahir, Abdul
Journal of Applied Informatics and Computing Vol. 10 No. 1 (2026): February 2026
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jaic.v10i1.11938

Abstract

Stock price forecasting plays an important role in supporting investment decision-making in volatile financial markets. This study compares the performance of Long Short-Term Memory (LSTM) and Gated Recurrent Unit (GRU) models in predicting the closing price of PT Bank Rakyat Indonesia (BBRI.JK) stock using daily closing price data from Yahoo Finance for the period November 2, 2020, to October 30, 2025. The research methodology includes data collection, preprocessing, model development, and evaluation. The results show that the GRU model outperforms LSTM in prediction accuracy, achieving an RMSE of 90.14, MAPE of 1.86%, and MAE of 68.89, while LSTM records an RMSE of 111.00, MAPE of 2.37%, and MAE of 87.55. In terms of computational efficiency, LSTM requires less training time (343.57 seconds) compared to GRU (471.98 seconds). The Diebold–Mariano test yields a DM statistic of 1.9949 with a p-value of 0.0461, indicating a statistically significant difference in predictive accuracy, where GRU produces lower prediction errors. This study provides empirical insights into the trade-off between accuracy and computational efficiency of deep learning models for stock price forecasting.
Sosialisasi Bijak Bermedia Sosial dalam Menangani Cyberbullying pada Lingkungan Pramuka Kwartir Cabang Purbalingga Kuncoro, Adam Prayogo; Akbari, Rifqy Willy
Cahaya Pengabdian Vol. 2 No. 2 (2025): Desember 2025
Publisher : Apik Cahaya Ilmu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61971/cp.v2i2.253

Abstract

Perkembangan media sosial memberikan banyak manfaat bagi generasi muda, termasuk anggota Pramuka. Namun, meningkatnya kasus cyberbullying menimbulkan dampak negatif terhadap kesehatan mental, prestasi, dan interaksi sosial peserta didik. Kegiatan pengabdian masyarakat ini bertujuan untuk memberikan sosialisasi dan edukasi mengenai literasi digital, etika bermedia sosial, serta strategi penanganan cyberbullying kepada anggota Pramuka Kwartir Cabang Purbalingga. Metode pelaksanaan meliputi ceramah interaktif, pemutaran video edukatif, diskusi kelompok, studi kasus, dan simulasi pelaporan insiden. Hasil kegiatan menunjukkan peningkatan pemahaman peserta terhadap konsep cyberbullying, jenis-jenisnya, serta langkah preventif dan responsif yang dapat dilakukan. Peserta juga menunjukkan perubahan sikap ke arah penggunaan media sosial yang lebih positif dan bertanggung jawab. Kegiatan ini diharapkan menjadi program berkelanjutan dalam pendidikan karakter digital di lingkungan Pramuka.
Co-Authors Abdul Jahir Adam Prayogo Kuncoro Prayogo, Adam