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Incremental learning suffers from two challenging problems; forgetting of old knowledge and intransigence on learning new knowledge. Prediction by the model incrementally learned with a subset of the dataset are thus uncertain and the…

Machine Learning · Computer Science 2019-02-05 Dahyun Kim , Jihwan Bae , Yeonsik Jo , Jonghyun Choi

This paper addresses the challenges of Online Action Recognition (OAR), a framework that involves instantaneous analysis and classification of behaviors in video streams. OAR must operate under stringent latency constraints, making it an…

Computer Vision and Pattern Recognition · Computer Science 2024-12-03 Wei Luo , Deyu Zhang , Ying Tang , Fan Wu , Yaoxue Zhang

Being able to recognise defects in industrial objects is a key element of quality assurance in production lines. Our research focuses on visual anomaly detection in RGB images. Although Convolutional Neural Networks (CNNs) achieve high…

Computer Vision and Pattern Recognition · Computer Science 2024-10-18 Daniel Gramelt , Timon Höfer , Ute Schmid

In some scenarios, classifier requires detecting out-of-distribution samples far from its training data. With desirable characteristics, reconstruction autoencoder-based methods deal with this problem by using input reconstruction error as…

Computer Vision and Pattern Recognition · Computer Science 2023-03-30 Yibo Zhou

Online learning of deep neural networks suffers from challenges such as hysteretic non-incremental updating, increasing memory usage, past retrospective retraining, and catastrophic forgetting. To alleviate these drawbacks and achieve…

Machine Learning · Computer Science 2024-12-18 Junda Wang , Minghui Hu , Ning Li , Abdulaziz Al-Ali , Ponnuthurai Nagaratnam Suganthan

Unsupervised anomaly detection (UAD) is a key ingredient of automated visual inspection in modern manufacturing. The reconstruction-based methods appeal because they have basic architectural design and they process data quickly but they…

Computer Vision and Pattern Recognition · Computer Science 2026-02-03 Dmytro Filatov , Valentyn Fedorov , Vira Filatova , Andrii Zelenchuk

Most advanced unsupervised anomaly detection (UAD) methods rely on modeling feature representations of frozen encoder networks pre-trained on large-scale datasets, e.g. ImageNet. However, the features extracted from the encoders that are…

Computer Vision and Pattern Recognition · Computer Science 2023-10-25 Jia Guo , Shuai Lu , Lize Jia , Weihang Zhang , Huiqi Li

Anomaly detection in industrial visual inspection is challenging due to the scarcity of defective samples. Most existing methods rely on unsupervised reconstruction using only normal data, often resulting in overfitting and poor detection…

Computer Vision and Pattern Recognition · Computer Science 2025-11-26 Amirhossein Khadivi Noghredeh , Abdollah Safari , Fatemeh Ziaeetabar , Firoozeh Haghighi

Continual Anomaly Detection (CAD) enables anomaly detection models in learning new classes while preserving knowledge of historical classes. CAD faces two key challenges: catastrophic forgetting and segmentation of small anomalous regions.…

Computer Vision and Pattern Recognition · Computer Science 2025-05-13 Lei Hu , Zhiyong Gan , Ling Deng , Jinglin Liang , Lingyu Liang , Shuangping Huang , Tianshui Chen

Open-set recognition (OSR) aims to simultaneously detect unknown-class samples and classify known-class samples. Most of the existing OSR methods are inductive methods, which generally suffer from the domain shift problem that the learned…

Computer Vision and Pattern Recognition · Computer Science 2022-07-14 Jiayin Sun , Qiulei Dong

The increasing deployment of low-cost IoT sensor platforms in industry boosts the demand for anomaly detection solutions that fulfill two key requirements: minimal configuration effort and easy transferability across equipment. Recent…

Named Entity Recognition (NER) is a well-studied problem in NLP. However, there is much less focus on studying NER datasets, compared to developing new NER models. In this paper, we employed three simple techniques to detect annotation…

Computation and Language · Computer Science 2024-06-28 Gabriel Bernier-Colborne , Sowmya Vajjala

This paper proposes a low-power online anomaly detection framework based on neuromorphic wireless sensor networks, encompassing possible use cases such as brain-machine interfaces and remote environmental monitoring. In the considered…

Machine Learning · Computer Science 2025-10-17 Junya Shiraishi , Jiechen Chen , Osvaldo Simeone , Petar Popovski

Continual learning, the setting where a learning agent is faced with a never ending stream of data, continues to be a great challenge for modern machine learning systems. In particular the online or "single-pass through the data" setting…

Machine Learning · Computer Science 2019-10-31 Rahaf Aljundi , Lucas Caccia , Eugene Belilovsky , Massimo Caccia , Min Lin , Laurent Charlin , Tinne Tuytelaars

Advances in deep neural networks (DNN) greatly bolster real-time detection of anomalous IoT data. However, IoT devices can hardly afford complex DNN models, and offloading anomaly detection tasks to the cloud incurs long delay. In this…

Machine Learning · Computer Science 2020-04-16 Mao V. Ngo , Tie Luo , Hakima Chaouchi , Tony Q. S. Quek

Wireless sensor networks (WSN) are fundamental to the Internet of Things (IoT) by bridging the gap between the physical and the cyber worlds. Anomaly detection is a critical task in this context as it is responsible for identifying various…

Networking and Internet Architecture · Computer Science 2018-12-14 Tie Luo , Sai G. Nagarajan

This paper proposed a novel anomaly detection (AD) approach of High-speed Train images based on convolutional neural networks and the Vision Transformer. Different from previous AD works, in which anomalies are identified with a single…

Computer Vision and Pattern Recognition · Computer Science 2022-03-30 Zhixue Wang , Yu Zhang , Lin Luo , Nan Wang

In the domain of anomaly detection, methods often excel in either high-level semantic or low-level industrial benchmarks, rarely achieving cross-domain proficiency. Semantic anomalies are novelties that differ in meaning from the training…

Computer Vision and Pattern Recognition · Computer Science 2024-07-18 Luc P. J. Sträter , Mohammadreza Salehi , Efstratios Gavves , Cees G. M. Snoek , Yuki M. Asano

Forgetting presents a significant challenge during incremental training, making it particularly demanding for contemporary AI systems to assimilate new knowledge in streaming data environments. To address this issue, most approaches in…

Machine Learning · Computer Science 2024-08-27 Monica Millunzi , Lorenzo Bonicelli , Angelo Porrello , Jacopo Credi , Petter N. Kolm , Simone Calderara

With the support of Internet of Things (IoT) devices, it is possible to acquire data from degradation phenomena and design data-driven models to perform anomaly detection in industrial equipment. This approach not only identifies potential…