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PSO-DT based BagDT: a robust lightweight ensemble framework for efficient feature selection and DDoS attack detection
1School of Computer Science Engineering and Information Systems, Vellore Institute of Technology, Vellore, 632014, India.
Scientific Reports
|October 16, 2025
Summary
A new PSO-DT-based BagDT ensemble model efficiently detects Distributed Denial of Service (DDoS) attacks in the Internet of Things (IoT). This lightweight model achieves high accuracy, making it ideal for resource-constrained smart environments.
Area of Science:
- Cybersecurity
- Machine Learning
- Internet of Things (IoT)
Background:
- The Internet of Things (IoT) has expanded significantly, increasing vulnerability to cyber-threats like Distributed Denial of Service (DDoS) attacks.
- Real-time detection of DDoS attacks is crucial for securing IoT environments and preventing disruption of critical services.
- Existing deep learning models (CNNs, LSTMs) are often too computationally intensive for resource-constrained IoT devices.
Purpose of the Study:
- To propose a robust and efficient hybrid framework for real-time DDoS attack detection in IoT environments.
- To address the limitations of high computational overhead in deep learning models for IoT.
- To develop a lightweight and scalable solution suitable for contemporary smart environments.
Main Methods:
- Developed a hybrid framework using Particle Swarm Optimization (PSO) combined with Decision Trees (DT) for effective feature selection.
- Evaluated the PSO-DT feature selection algorithm with ensemble learners: Random Subspace KNN, AdaBoost, RUSBoost, and Bagged Decision Trees (BagDT).
- Focused on reducing computational cost and model size while maintaining high detection accuracy.
Main Results:
- The proposed PSO-DT-based BagDT ensemble model achieved 99.96% accuracy and a macro-average precision, recall, and F1-score of 0.99.
- Compared to other variants, the BagDT model showed a 4.13% increase in accuracy and a 95.49% reduction in training time.
- Demonstrated a 63.52% increase in overall throughput, confirming the model's efficiency.
Conclusions:
- The PSO-DT-based BagDT ensemble model offers a superior, efficient, and scalable solution for real-time DDoS attack detection in IoT.
- The hybrid approach effectively reduces complexity and computational overhead, making it suitable for resource-constrained IoT devices.
- The model's high performance validates its potential for implementation in modern smart environments.
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