Buana Information Technology and Computer Sciences (BIT and CS)
Vol. 7 No. 2 (2026): Buana Information Technology and Computer Sciences (BIT and CS)

Implementation of a Bi-LSTM Model for Automatic Text Classification of Mathematics, Science, and Indonesian Language Questions: Author's Country: Indonesia

Mochamad soffan muslim (Universitas Widya Gama Malang)
Aviv Yuniar Rahman (Universitas Widya Gama Malang)
Rangga Pahlevi (Universitas Widya Gama Malang)



Article Info

Publish Date
30 Jul 2026

Abstract

This study aims to implement the Bidirectional Long Short-Term Memory (Bi-LSTM) model for automatic text classification of Mathematics, Natural Sciences (IPA), and Indonesian language questions to support efficient question grouping in digital education systems. The dataset used consists of 2,718 questions, which are evenly distributed across three subject categories. The research stages include text preprocessing, tokenization and padding, splitting the dataset into training and testing sets, designing the Bi-LSTM model architecture, and conducting training and evaluation using accuracy, precision, recall, and F1-score metrics. The results show that the Bi-LSTM model achieves an accuracy of 97% on the test data, with an average F1-score of 0.97. The confusion matrix analysis indicates that most predictions are correctly classified with a relatively low misclassification rate across categories. Based on these results, it can be concluded that the Bi-LSTM model is effective for automatic text classification of educational questions and has strong potential for further development in technology-based question grouping systems.

Copyrights © 2026






Journal Info

Abbrev

bit-cs

Publisher

Subject

Computer Science & IT

Description

Buana Information Technology and Computer Science (BIT and CS) is a journal focusing on new technologies that handle IT research and management - including strategy, change, infrastructure, human resources, information system development and implementation, technology development, future technology, ...