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We propose an anomaly detection technique for X.509 certificates utilizing Isolation Forest. This method can be beneficial when compliance testing with X.509 linters proves unsatisfactory, and we seek to identify anomalies beyond standards…

Cryptography and Security · Computer Science 2024-05-09 Richard Ostertág , Martin Stanek

Industrial maintenance is being transformed by the Internet of Things and edge computing, generating continuous data streams that demand real-time, adaptive decision-making under limited computational resources. While data stream mining…

Machine Learning · Computer Science 2025-12-10 Ana Rita Paupério , Diogo Risca , Afonso Lourenço , Goreti Marreiros , Ricardo Martins

Single-level density-based approach has long been widely acknowledged to be a conceptually and mathematically convincing clustering method. In this paper, we propose an algorithm called "best-scored clustering forest" that can obtain the…

Machine Learning · Statistics 2019-06-25 Hanyuan Hang , Yuchao Cai , Hanfang Yang

Robust and persistent localisation is essential for ensuring the safe operation of autonomous vehicles. When operating in large and diverse urban driving environments, autonomous vehicles are frequently exposed to situations that violate…

Robotics · Computer Science 2021-03-29 Siqi Yi , Stewart Worrall , Eduardo Nebot

Federated learning can be a promising solution for enabling IoT cybersecurity (i.e., anomaly detection in the IoT environment) while preserving data privacy and mitigating the high communication/storage overhead (e.g., high-frequency data…

Machine Learning · Computer Science 2022-03-04 Tuo Zhang , Chaoyang He , Tianhao Ma , Lei Gao , Mark Ma , Salman Avestimehr

Network attacks have been very prevalent as their rate is growing tremendously. Both organization and individuals are now concerned about their confidentiality, integrity and availability of their critical information which are often…

Machine Learning · Computer Science 2020-08-07 MohammadNoor Injadat , Fadi Salo , Ali Bou Nassif , Aleksander Essex , Abdallah Shami

Machine learning, statistical-based, and knowledge-based methods are often used to implement an Anomaly-based Intrusion Detection System which is software that helps in detecting malicious and undesired activities in the network primarily…

Cryptography and Security · Computer Science 2023-03-01 Vusumuzi Malele , Topside E Mathonsi

Airborne laser scanning (LiDAR) point clouds over large forested areas can be processed to segment individual trees and subsequently extract tree-level information. Existing segmentation procedures typically detect more than 90% of…

Computer Vision and Pattern Recognition · Computer Science 2017-08-04 Hamid Hamraz , Marco A. Contreras , Jun Zhang

The spread of a resource-constrained Internet of Things (IoT) environment and embedded devices has put pressure on the real-time detection of anomalies occurring at the edge. This survey presents an overview of machine-learning methods…

Machine Learning · Computer Science 2025-12-23 Abdelmadjid Benmachiche , Khadija Rais , Hamda Slimi

In the past two decades, most research on anomaly detection has focused on improving the accuracy of the detection, while largely ignoring the explainability of the corresponding methods and thus leaving the explanation of outcomes to…

Machine Learning · Computer Science 2023-07-12 Zhong Li , Yuxuan Zhu , Matthijs van Leeuwen

Nowadays, blockchain-based technologies are being developed in various industries to improve data security. In the context of the Industrial Internet of Things (IIoT), a chain-based network is one of the most notable applications of…

Cryptography and Security · Computer Science 2022-04-22 Abbas Yazdinejad , Ali Dehghantanha , Reza M. Parizi , Mohammad Hammoudeh , Hadis Karimipour , Gautam Srivastava

Intrusion Detection Systems (IDS) are developed to protect the network by detecting the attack. The current paper proposes an unsupervised feature selection technique for analyzing the network data. The search capability of the…

Neural and Evolutionary Computing · Computer Science 2019-05-17 Chanchal Suman , Somanath Tripathy , Sriparna Saha

Complex devices are connected daily and eagerly generate vast streams of multidimensional state measurements. These devices often operate in distinct modes based on external conditions (day/night, occupied/vacant, etc.), and to prevent…

Signal Processing · Electrical Eng. & Systems 2020-07-21 John Sipple

Ensemble learning for anomaly detection of data structured into complex network has been barely studied due to the inconsistent performance of complex network characteristics and lack of inherent objective function. In this paper, we…

Social and Information Networks · Computer Science 2018-07-25 Jinfa Wang , Xiao Liu , Hai Zhao , Xingchi Chen

With the rapid expansion of Internet of Things (IoT) networks, detecting malicious traffic in real-time has become a critical cybersecurity challenge. This research addresses the detection challenges by presenting a comprehensive empirical…

Machine Learning · Computer Science 2025-06-11 Jiaqi Chen , Rongbin Ye

The growing integration of drones into civilian, commercial, and defense sectors introduces significant cybersecurity concerns, particularly with the increased risk of network-based intrusions targeting drone communication protocols.…

Cryptography and Security · Computer Science 2025-12-24 Md. Alamgir Hossain , Waqas Ishtiaq , Md. Samiul Islam

Random Forest (RF) is a widely used ensemble learning technique known for its robust classification performance across diverse domains. However, it often relies on hundreds of trees and all input features, leading to high inference cost and…

Machine Learning · Computer Science 2025-07-08 Sijan Bhattarai , Saurav Bhandari , Girija Bhusal , Saroj Shakya , Tapendra Pandey

Anomaly detection is a branch of data analysis and machine learning which aims at identifying observations that exhibit abnormal behaviour. Be it measurement errors, disease development, severe weather, production quality default(s) (items)…

Machine Learning · Statistics 2024-07-11 Pavlo Mozharovskyi , Romain Valla

Anomaly detection is an essential problem in machine learning. Application areas include network security, health care, fraud detection, etc., involving high-dimensional datasets. A typical anomaly detection system always faces the…

Machine Learning · Computer Science 2021-12-30 Inderjeet Singh , Nandyala Hemachandra

Classification is essential to the applications in the field of data mining, artificial intelligence, and fault detection. There exists a strong need in developing accurate, suitable, and efficient classification methods and algorithms with…

Artificial Intelligence · Computer Science 2024-03-19 Yingtao Ren , Xiaomin Zhu , Kaiyuan Bai , Runtong Zhang