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A feature selection algorithm for intrusion detection system based on Pigeon Inspired Optimizer
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DOI：10.1016/j.eswa.2020.113249.png)
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Abstract
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Feature selection plays a vital role in building machine learning models. Irrelevant features in data affect the accuracy of the model and increase the training time needed to build the model. Feature selection is an important process to build Intrusion Detection System (IDS). In this paper, a wrapper feature selection algorithm for IDS is proposed. This algorithm uses the pigeon inspired optimizer to utilize the selection process. A new method to binarize a continuous pigeon inspired optimizer is proposed and compared to the traditional way for binarizing continuous swarm intelligent algorithms. The proposed algorithm was evaluated using three popular datasets: KDDCUP99, NLS-KDD and UNSW-NB15. The proposed algorithm outperformed several feature selection algorithms from state-of-the-art related works in terms of TPR, FPR, accuracy, and F-score. Also, the proposed cosine similarity method for binarizing the algorithm has a faster convergence than the sigmoid method. (C) 2020 Elsevier Ltd. All rights reserved.
Keywords:
Feature selection
Intrusion Detection System
KDDCUP
Pigeon Inspired Optimizer
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