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Anomaly detection in surveillance videos has been recently gaining attention. A challenging aspect of high-dimensional applications such as video surveillance is continual learning. While current state-of-the-art deep learning approaches…

Computer Vision and Pattern Recognition · Computer Science 2020-04-20 Keval Doshi , Yasin Yilmaz

Object recognition is a key enabler across industry and defense. As technology changes, algorithms must keep pace with new requirements and data. New modalities and higher resolution sensors should allow for increased algorithm robustness.…

Computer Vision and Pattern Recognition · Computer Science 2020-12-24 Samuel Rivera , Joel Klipfel , Deborah Weeks

Transfer Learning aims to optimally aggregate samples from a target distribution, with related samples from a so-called source distribution to improve target risk. Multiple procedures have been proposed over the last two decades to address…

Machine Learning · Statistics 2025-04-29 Steve Hanneke , Samory Kpotufe

Anomaly detection is an important problem in many application areas, such as network security. Many deep learning methods for unsupervised anomaly detection produce good empirical performance but lack theoretical guarantees. By casting…

Machine Learning · Statistics 2024-09-16 Tian-Yi Zhou , Matthew Lau , Jizhou Chen , Wenke Lee , Xiaoming Huo

Time series data are often corrupted by outliers or other kinds of anomalies. Identifying the anomalous points can be a goal on its own (anomaly detection), or a means to improving performance of other time series tasks (e.g. forecasting).…

Machine Learning · Computer Science 2021-12-30 François-Xavier Aubet , Daniel Zügner , Jan Gasthaus

Health monitoring is important for maintaining reliable information and communications technology (ICT) systems. Anomaly detection methods based on machine learning, which train a model for describing "normality" are promising for…

Networking and Internet Architecture · Computer Science 2020-03-25 Kengo Tajiri , Yasuhiro Ikeda , Yuusuke Nakano , Keishiro Watanabe

The detection of anomalies in time series data is a critical task with many monitoring applications. Existing systems often fail to encompass an end-to-end detection process, to facilitate comparative analysis of various anomaly detection…

Machine Learning · Computer Science 2022-04-21 Sarah Alnegheimish , Dongyu Liu , Carles Sala , Laure Berti-Equille , Kalyan Veeramachaneni

A common practice in metric learning is to train and test an embedding model for each dataset. This dataset-specific approach fails to simulate real-world scenarios that involve multiple heterogeneous distributions of data. In this regard,…

Computer Vision and Pattern Recognition · Computer Science 2025-01-22 Sungyeon Kim , Donghyun Kim , Suha Kwak

In order to keep track of the operational state of power grid, the world's largest sensor systems, smart grid, was built by deploying hundreds of millions of smart meters. Such system makes it possible to discover and make quick response to…

Machine Learning · Computer Science 2019-07-10 Jiangteng Li , Fei Wang

Accuracy anomaly detection in user-level network traffic is crucial for network security. Compared with existing models that passively detect specific anomaly classes with large labeled training samples, user-level network traffic contains…

Cryptography and Security · Computer Science 2025-01-16 Tongtong Feng , Qi Qi , Lingqi Guo , Jingyu Wang

Machine learning models often encounter samples that are diverged from the training distribution. Failure to recognize an out-of-distribution (OOD) sample, and consequently assign that sample to an in-class label significantly compromises…

Computer Vision and Pattern Recognition · Computer Science 2022-12-06 Mohammadreza Salehi , Hossein Mirzaei , Dan Hendrycks , Yixuan Li , Mohammad Hossein Rohban , Mohammad Sabokrou

Anomaly detection (AD) is the machine learning task of identifying highly discrepant abnormal samples by solely relying on the consistency of the normal training samples. Under the constraints of a distribution shift, the assumption that…

Machine Learning · Computer Science 2023-12-25 João B. S. Carvalho , Mengtao Zhang , Robin Geyer , Carlos Cotrini , Joachim M. Buhmann

For data-constrained, complex and dynamic industrial environments, there is a critical need for transferable and multimodal methodologies to enhance anomaly detection and therefore, prevent costs associated with system failures. Typically,…

In the context of supervised statistical learning, it is typically assumed that the training set comes from the same distribution that draws the test samples. When this is not the case, the behavior of the learned model is unpredictable and…

Machine Learning · Computer Science 2022-05-12 Antonio-Javier Gallego , Jorge Calvo-Zaragoza , Robert B. Fisher

Object detection is a pivotal task in computer vision that has received significant attention in previous years. Nonetheless, the capability of a detector to localise objects out of the training distribution remains unexplored. Whilst…

Computer Vision and Pattern Recognition · Computer Science 2024-07-23 Brian K. S. Isaac-Medina , Yona Falinie A. Gaus , Neelanjan Bhowmik , Toby P. Breckon

Parameter-efficient transfer learning (PETL) based on large-scale pre-trained foundation models has achieved great success in various downstream applications. Existing tuning methods, such as prompt, prefix, and adapter, perform…

Computer Vision and Pattern Recognition · Computer Science 2023-03-02 Zeyinzi Jiang , Chaojie Mao , Ziyuan Huang , Yiliang Lv , Deli Zhao , Jingren Zhou

We propose a novel adaptive transfer learning framework, learning to transfer learn (L2TL), to improve performance on a target dataset by careful extraction of the related information from a source dataset. Our framework considers…

Machine Learning · Computer Science 2020-07-17 Linchao Zhu , Sercan O. Arik , Yi Yang , Tomas Pfister

Anomalies are intuitively easy for human experts to understand, but they are hard to define mathematically. Therefore, in order to have performance guarantees in unsupervised anomaly detection, priors need to be assumed on what the…

Machine Learning · Statistics 2020-04-08 Tiago Pimentel , Marianne Monteiro , Adriano Veloso , Nivio Ziviani

The analysis of distributed techniques is often focused upon their efficiency, without considering their robustness (or lack thereof). Such a consideration is particularly important when devices or central servers can fail, which can…

Machine Learning · Computer Science 2023-03-24 Marc Katzef , Andrew C. Cullen , Tansu Alpcan , Christopher Leckie , Justin Kopacz

We propose UnCLe, the first standardized benchmark for Unsupervised Continual Learning of a multimodal 3D reconstruction task: Depth completion aims to infer a dense depth map from a pair of synchronized RGB image and sparse depth map. We…

Computer Vision and Pattern Recognition · Computer Science 2025-06-11 Xien Chen , Rit Gangopadhyay , Michael Chu , Patrick Rim , Hyoungseob Park , Alex Wong