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Advanced Neural Architectures for Anomaly Detection in Sensory Data

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Internet of Things".

Deadline for manuscript submissions: 31 January 2026 | Viewed by 913

Special Issue Editors


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Guest Editor
Human-Machine Perception Laboratory, Department of Computer Science and Engineering, University of Nevada, Reno, 1664 N Virginia Street, Reno, NV 89557, USA
Interests: visual computing; artificial intelligence robotics; virtual reality; urban visual intelligence; multisensory systems; human-computer interactions
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Guest Editor
1. Human-Machine Perception Laboratory, Department of Computer Science and Engineering, University of Nevada, Reno, 1664 N Virginia Street, Reno, NV 89557, USA
2. Google, Alphabet Inc., Mountain View, CA 94043, USA
Interests: AI in healthcare; generative modeling; virtual reality; time series data

Special Issue Information

Dear Colleagues,

Anomaly detection is the process of identifying unusual patterns, behaviors, or data points that deviate significantly from expected norms within a dataset. It is a critical tool in various domains, including security, surveillance, and healthcare, where identifying outliers can signal potential problems, risks, or opportunities. Techniques for anomaly detection range from simple statistical methods, such as identifying values beyond a certain threshold, to complex machine learning algorithms that leverage patterns and relationships within high-dimensional data. By detecting anomalies early, applications can mitigate risks, improve interactivity, and optimize processes.

With the advent of novel neural architectures new advances have been made in anomaly detection, especially in complex and high-dimensional datasets. Traditional methods often struggle to capture intricate patterns or adapt to evolving data distributions, limiting their effectiveness in dynamic environments. Modern neural architectures, such as autoencoders, graph neural networks, and transformers, offer the ability to learn hierarchical, contextual, and relational features, making them highly effective for identifying subtle anomalies. These architectures can uncover hidden dependencies, handle unstructured data like images or text, and adapt to real-time data streams. Furthermore, innovations in attention mechanisms and generative models enable more precise and interpretable anomaly detection, enhancing trust in critical applications like cybersecurity, finance, and healthcare. By leveraging these cutting-edge designs, researchers and practitioners can address the growing complexity of anomaly detection challenges, paving the way for more robust and scalable solutions.

This Special Issue will focus on the latest theoretical developments and applications of advanced neural architectures for anomaly detection acquired from a vast range of sensors in the form of time-series, image-based, and hyper-dimensional data. Articles focusing of multisensory systems, health care, and human-computer interactions are highly encouraged.

Dr. Alireza Tavakkoli
Dr. Prithul Sarker
Guest Editors

Manuscript Submission Information

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Keywords

  • anomaly detection
  • neural architectures
  • generative models
  • density estimation
  • data description

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Published Papers (1 paper)

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Research

21 pages, 3381 KB  
Article
Aero-Engine Ablation Defect Detection with Improved CLR-YOLOv11 Algorithm
by Yi Liu, Jiatian Liu, Yaxi Xu, Qiang Fu, Jide Qian and Xin Wang
Sensors 2025, 25(21), 6574; https://doi.org/10.3390/s25216574 - 25 Oct 2025
Viewed by 549
Abstract
Aero-engine ablation detection is a critical task in aircraft health management, yet existing rotation-based object detection methods often face challenges of high computational complexity and insufficient local feature extraction. This paper proposes an improved YOLOv11 algorithm incorporating Context-guided Large-kernel attention and Rotated detection [...] Read more.
Aero-engine ablation detection is a critical task in aircraft health management, yet existing rotation-based object detection methods often face challenges of high computational complexity and insufficient local feature extraction. This paper proposes an improved YOLOv11 algorithm incorporating Context-guided Large-kernel attention and Rotated detection head, called CLR-YOLOv11. The model achieves synergistic improvement in both detection efficiency and accuracy through dual structural optimization, with its innovations primarily embodied in the following three tightly coupled strategies: (1) Targeted Data Preprocessing Pipeline Design: To address challenges such as limited sample size, low overall image brightness, and noise interference, we designed an ordered data augmentation and normalization pipeline. This pipeline is not a mere stacking of techniques but strategically enhances sample diversity through geometric transformations (random flipping, rotation), hybrid augmentations (Mixup, Mosaic), and pixel-value transformations (histogram equalization, Gaussian filtering). All processed images subsequently undergo Z-Score normalization. This order-aware pipeline design effectively improves the quality, diversity, and consistency of the input data. (2) Context-Guided Feature Fusion Mechanism: To overcome the limitations of traditional Convolutional Neural Networks in modeling long-range contextual dependencies between ablation areas and surrounding structures, we replaced the original C3k2 layer with the C3K2CG module. This module adaptively fuses local textural details with global semantic information through a context-guided mechanism, enabling the model to more accurately understand the gradual boundaries and spatial context of ablation regions. (3) Efficiency-Oriented Large-Kernel Attention Optimization: To expand the receptive field while strictly controlling the additional computational overhead introduced by rotated detection, we replaced the C2PSA module with the C2PSLA module. By employing large-kernel decomposition and a spatial selective focusing strategy, this module significantly reduces computational load while maintaining multi-scale feature perception capability, ensuring the model meets the demands of high real-time applications. Experiments on a self-built aero-engine ablation dataset demonstrate that the improved model achieves 78.5% mAP@0.5:0.95, representing a 4.2% improvement over the YOLOv11-obb which model without the specialized data augmentation. This study provides an effective solution for high-precision real-time aviation inspection tasks. Full article
(This article belongs to the Special Issue Advanced Neural Architectures for Anomaly Detection in Sensory Data)
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