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All Journal Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) Innovative: Journal Of Social Science Research
Najma Rafifah Putri Syallya
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Humanities Computer Science & IT Engineering Law, Crime, Criminology & Criminal Justice Public Health Other

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Model Peramalan Double Seasonal Pada Data Konsumsi Gas Alam Amerika Serikat Dengan Pendekatan Analisis Spektral Fitriani Azuri, Dila; Putri Syallya, Najma Rafifah; Najwa, Sandrina; Alifia, Wanda; Darmawan , Gumgum
Innovative: Journal Of Social Science Research Vol. 3 No. 6 (2023): Innovative: Journal Of Social Science Research
Publisher : Universitas Pahlawan Tuanku Tambusai

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Abstract

Gas alam merupakan sumber energi utama di seluruh dunia dan saat ini banyak digunakan untuk berbagai keperluan di Amerika Serikat. Konsumsi gas alam di Amerika Serikat memiliki pola double seasonal yang terjadi karena faktor iklim. Tujuan dari penelitian ini adalah untuk menemukan periode tersembunyi pada data dan meramalkan konsumsi gas alam dengan menggunakan analisis spektral dan metode Double Seasonal ARIMA. Hasil analisis spektral menunjukkan bahwa terdapat double seasonal dengan periode 12 bulan dan 6 bulan, yang berarti karakteristik perubahan konsumsi gas alam di Amerika Serikat cenderung meningkat atau menurun setiap 12 bulan dan 6 bulan. Model yang terpilih, SARIMA(0,1,0)(1,1,4)6(1,1,1)12, menunjukkan keefektifannya dalam memprediksi pola konsumsi di masa mendatang dengan MAPE sebesar 2,61% yang mengindikasikan keandalan model yang tinggi.
NLP-Based Intent Classification Model for Academic Curriculum Chatbots in Universities Study Programs Najma Rafifah Putri Syallya; Anindya Apriliyanti Pravitasari; Afrida Helen
Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) Vol 9 No 1 (2025): February 2025
Publisher : Ikatan Ahli Informatika Indonesia (IAII)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29207/resti.v9i1.6276

Abstract

Chatbots are increasingly prevalent in various fields, including academic fields. Universities often rely on lecturers and staff for information access, which can lead to delays, limited availability outside working hours, and the risk of missed questions. This study aims to develop a chatbot model capable of addressing questions about the curriculum through intent classification, reducing reliance on manual responses, and providing a solution that ensures quick, accurate information retrieval. The research focuses on optimizing the IndoBERT model for intent classification and addresses challenges that arose due to imbalance data, which could have impacted model performance. Data was collected through an open poll on common curriculum-related questions asked by students. To address data imbalance, we tried oversampling techniques, such as SMOTE, B-SMOTE, ADASYN, and Data Augmentation. Data augmentation was chosen and successfully addressed the imbalance problem while maintaining data semantics effectively. We achieved the best model with hyperparameters batch size of 8, learning rate of 0.00001, 15 epochs, and 64 neurons in the hidden layer, resulting in 98.7% accuracy on the test data. Evaluation metrics further demonstrate the model's robustness across multiple intents. This research demonstrates the advantages of the IndoBERT model in intent classification for academic chatbots, achieving excellent performance.
Co-Authors Afrida Helen Alifia, Wanda Anindya Apriliyanti Pravitasari Fitriani Azuri, Dila Gumgum Darmawan Najwa, Sandrina