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Due to the growing amount of data from in-situ sensors in wastewater systems, it becomes necessary to automatically identify abnormal behaviours and ensure high data quality. This paper proposes an anomaly detection method based on a deep…

Signal Processing · Electrical Eng. & Systems 2020-03-09 Stefania Russo , Andy Disch , Frank Blumensaat , Kris Villez

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

Background: Student engagement (SE) in virtual learning can have a major impact on meeting learning objectives and program dropout risks. Developing Artificial Intelligence (AI) models for automatic SE measurement requires annotated…

Human-Computer Interaction · Computer Science 2023-01-18 Shehroz S. Khan , Ali Abedi , Tracey Colella

An anomaly detection method based on deep autoencoders is proposed to address anomalies that often occur in enterprise-level ETL data streams. The study first analyzes multiple types of anomalies in ETL processes, including delays, missing…

Machine Learning · Computer Science 2025-11-04 Xin Chen , Saili Uday Gadgil , Kangning Gao , Yi Hu , Cong Nie

Deep learning and contactless sensing technologies have significantly advanced the automated assessment of human behaviors in healthcare. In the context of autism spectrum disorder (ASD), repetitive motor behaviors such as spinning, head…

Computer Vision and Pattern Recognition · Computer Science 2025-08-19 Amit Kumar Singh , Vrijendra Singh

In the contemporary digital landscape, the continuous generation of extensive streaming data across diverse domains has become pervasive. Yet, a significant portion of this data remains unlabeled, posing a challenge in identifying…

Computational Engineering, Finance, and Science · Computer Science 2025-08-25 Jin Li , Kleanthis Malialis , Christos G. Panayiotou , Marios M. Polycarpou

In the digitization of energy systems, sensors and smart meters are increasingly being used to monitor production, operation and demand. Detection of anomalies based on smart meter data is crucial to identify potential risks and unusual…

Signal Processing · Electrical Eng. & Systems 2022-06-16 Wenjing Dai , Xiufeng Liu , Alfred Heller , Per Sieverts Nielsen

The high cost of acquiring labels is one of the main challenges in deploying supervised machine learning algorithms. Active learning is a promising approach to control the learning process and address the difficulties of data labeling by…

Machine Learning · Computer Science 2019-11-19 Farhad Pourkamali-Anaraki , Michael B. Wakin

Online learning is a rapidly growing industry. However, a major doubt about online learning is whether students are as engaged as they are in face-to-face classes. An engagement recognition system can notify the instructors about the…

Computer Vision and Pattern Recognition · Computer Science 2024-06-05 Chi-hsuan Wu , Shih-yang Liu , Xijie Huang , Xingbo Wang , Rong Zhang , Luca Minciullo , Wong Kai Yiu , Kenny Kwan , Kwang-Ting Cheng

Convolutional neural networks (CNNs) have been successfully applied to the single target tracking task in recent years. Generally, training a deep CNN model requires numerous labeled training samples, and the number and quality of these…

Computer Vision and Pattern Recognition · Computer Science 2022-01-14 Di Yuan , Xiaojun Chang , Yi Yang , Qiao Liu , Dehua Wang , Zhenyu He

Active learning has been utilized as an efficient tool in building anomaly detection models by leveraging expert feedback. In an active learning framework, a model queries samples to be labeled by experts and re-trains the model with the…

Machine Learning · Computer Science 2023-09-19 Minkyung Kim , Junsik Kim , Jongmin Yu , Jun Kyun Choi

Recently, the standard variational autoencoder has been successfully used to learn a probabilistic prior over speech signals, which is then used to perform speech enhancement. Variational autoencoders have then been conditioned on a label…

Audio and Speech Processing · Electrical Eng. & Systems 2022-01-04 Guillaume Carbajal , Julius Richter , Timo Gerkmann

Predicting contextualised engagement in videos is a long-standing problem that has been popularly attempted by exploiting the number of views or the associated likes using different computational methods. The recent decade has seen a boom…

Artificial Intelligence · Computer Science 2022-01-19 Sujit Roy , Gnaneswara Rao Gorle , Vishal Gaur , Haider Raza , Shoaib Jameel

A novel approach to detecting anomalies in time series data is presented in this paper. This approach is pivotal in domains such as data centers, sensor networks, and finance. Traditional methods often struggle with manual parameter tuning…

Machine Learning · Computer Science 2025-04-07 Bahareh Golchin , Banafsheh Rekabdar

Deep learning based methods have seen a massive rise in popularity for hyperspectral image classification over the past few years. However, the success of deep learning is attributed greatly to numerous labeled samples. It is still very…

Computer Vision and Pattern Recognition · Computer Science 2021-06-30 Bing Liu , Anzhu Yu , Pengqiang Zhang , Lei Ding , Wenyue Guo , Kuiliang Gao , Xibing Zuo

Learning precise representations of users and items to fit observed interaction data is the fundamental task of collaborative filtering. Existing studies usually infer entangled representations to fit such interaction data, neglecting to…

Information Retrieval · Computer Science 2024-01-11 Zhiqiang Guo , Guohui Li , Jianjun Li , Chaoyang Wang , Si Shi

In many real-world AD applications including computer security and fraud prevention, the anomaly detector must be configurable by the human analyst to minimize the effort on false positives. One important way to configure the detector is by…

Machine Learning · Computer Science 2024-05-15 Shubhomoy Das , Md Rakibul Islam , Nitthilan Kannappan Jayakodi , Janardhan Rao Doppa

In this paper, we focus on the development of a method that detects abnormal trajectories of road users at traffic intersections. The main difficulty with this is the fact that there are very few abnormal data and the normal ones are…

Computer Vision and Pattern Recognition · Computer Science 2018-09-05 Pankaj Raj Roy , Guillaume-Alexandre Bilodeau

Activity recognition is a challenging problem with many practical applications. In addition to the visual features, recent approaches have benefited from the use of context, e.g., inter-relationships among the activities and objects.…

Computer Vision and Pattern Recognition · Computer Science 2019-04-10 Mahmudul Hasan , Sujoy Paul , Anastasios I. Mourikis , Amit K. Roy-Chowdhury

Eye movements have been widely investigated to study the atypical visual attention in Autism Spectrum Disorder (ASD). The majority of these studies have been focused on limited eye movement features by statistical comparisons between ASD…

Image and Video Processing · Electrical Eng. & Systems 2019-11-27 Jin Xie , Longfei Wang , Paula Webster , Yang Yao , Jiayao Sun , Shuo Wang , Huihui Zhou