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All Journal IAES International Journal of Artificial Intelligence (IJ-AI)
Prajwalasimha Sindugatta Nagaraja
Dayananda Sagar University
Computer Science & IT Engineering

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Deep learning intrusion detection for software-defined networking using synthetic minority oversampling Prajwalasimha Sindugatta Nagaraja; Navya Rajashekara; Pushpa Bangalore Ramesh; Druva Kumar Siddaraju; Santhosh Kumar Ramachandragowda; Trupti Shripad Tagare
IAES International Journal of Artificial Intelligence (IJ-AI) Vol 15, No 4: August 2026
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijai.v15.i4.pp3703-3711

Abstract

This article proposes an advanced method for network intrusion detection using a combination of recurrent neural networks (RNNs), specifically long short-term memory (LSTM), gated recurrent units (GRU), and bidirectional long short-term memory (BiLSTM) models, enhanced by synthetic minority oversampling technique (SMOTE) to address class imbalance in datasets like network security laboratory–knowledge discovery in databases (NSL-KDD). The method aims to accurately classify network traffic by learning temporal patterns of both normal and malicious activities. SMOTE is employed to balance the dataset, ensuring that underrepresented attack types receive adequate model attention, thereby improving model robustness. The proposed models (LSTM, GRU, and BiLSTM) are trained and evaluated on the NSL-KDD dataset, with hyperparameter tuning performed through RandomizedSearchCV for optimal performance. The results show a significant improvement in accuracy, precision, recall, and F1-score, with BiLSTM demonstrating the highest performance, achieving near-perfect classification results (99.5% accuracy). This method not only mitigates the issue of class imbalance but also leverages the power of RNNs for sequence modeling, offering a promising solution for effective intrusion detection in modern networks.
Co-Authors Druva Kumar Siddaraju Navya Rajashekara Pushpa Bangalore Ramesh Santhosh Kumar Ramachandragowda Trupti Shripad Tagare