IAES International Journal of Artificial Intelligence (IJ-AI)
Vol 15, No 4: August 2026

Deep learning intrusion detection for software-defined networking using synthetic minority oversampling

Prajwalasimha Sindugatta Nagaraja (Dayananda Sagar University)
Navya Rajashekara (Dayananda Sagar University)
Pushpa Bangalore Ramesh (Dayananda Sagar College of Engineering)
Druva Kumar Siddaraju (Dayananda Sagar College of Engineering)
Santhosh Kumar Ramachandragowda (Dayananda Sagar College of Engineering)
Trupti Shripad Tagare (Dayananda Sagar College of Engineering)



Article Info

Publish Date
01 Aug 2026

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.

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Journal Info

Abbrev

IJAI

Publisher

Subject

Computer Science & IT Engineering

Description

IAES International Journal of Artificial Intelligence (IJ-AI) publishes articles in the field of artificial intelligence (AI). The scope covers all artificial intelligence area and its application in the following topics: neural networks; fuzzy logic; simulated biological evolution algorithms (like ...