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Many methods have been proposed for unsupervised time series anomaly detection. Despite some progress, research on predicting future anomalies is still relatively scarce. Predicting anomalies is particularly challenging due to the diverse…

Machine Learning · Computer Science 2024-10-22 Shiyan Hu , Kai Zhao , Xiangfei Qiu , Yang Shu , Jilin Hu , Bin Yang , Chenjuan Guo

We perform a comprehensive benchmarking of contrastive frameworks for learning multimodal representations in the medical domain. Through this study, we aim to answer the following research questions: (i) How transferable are general-domain…

Computer Vision and Pattern Recognition · Computer Science 2024-06-12 Shuvendu Roy , Yasaman Parhizkar , Franklin Ogidi , Vahid Reza Khazaie , Michael Colacci , Ali Etemad , Elham Dolatabadi , Arash Afkanpour

With the advent of big data across multiple high-impact applications, we are often facing the challenge of complex heterogeneity. The newly collected data usually consist of multiple modalities and are characterized with multiple labels,…

Machine Learning · Computer Science 2022-07-27 Lecheng Zheng , Jinjun Xiong , Yada Zhu , Jingrui He

Pre-training a recognition model with contrastive learning on a large dataset of unlabeled data has shown great potential to boost the performance of a downstream task, e.g., image classification. However, in domains such as medical…

Computer Vision and Pattern Recognition · Computer Science 2021-08-24 Jizong Peng , Ping Wang , Chrisitian Desrosiers , Marco Pedersoli

Contrastive learning relies on an assumption that positive pairs contain related views, e.g., patches of an image or co-occurring multimodal signals of a video, that share certain underlying information about an instance. But what if this…

Computer Vision and Pattern Recognition · Computer Science 2022-01-13 Ching-Yao Chuang , R Devon Hjelm , Xin Wang , Vibhav Vineet , Neel Joshi , Antonio Torralba , Stefanie Jegelka , Yale Song

Multilingual information retrieval (IR) is challenging since annotated training data is costly to obtain in many languages. We present an effective method to train multilingual IR systems when only English IR training data and some parallel…

Information Retrieval · Computer Science 2023-05-29 Xiyang Hu , Xinchi Chen , Peng Qi , Deguang Kong , Kunlun Liu , William Yang Wang , Zhiheng Huang

Contrastive steering has been shown as a simple and effective method to adjust the generative behavior of LLMs at inference time. It uses examples of prompt responses with and without a trait to identify a direction in an intermediate…

Machine Learning · Computer Science 2026-03-04 Cullen Anderson , Narmeen Oozeer , Foad Namjoo , Remy Ogasawara , Amirali Abdullah , Jeff M. Phillips

Predictive maintenance, i.e. predicting failure to be few steps ahead of the fault, is one of the pillars of Industry 4.0. An effective method for that is to track early signs of degradation before a failure happens. This paper presents an…

Robotics · Computer Science 2020-11-19 Sana Talmoudi , Tetsuya Kanada , Yasuhisa Hirata

Milling machines form an integral part of many industrial processing chains. As a consequence, several machine learning based approaches for tool wear detection have been proposed in recent years, yet these methods mostly deal with standard…

Machine Learning · Computer Science 2022-02-08 Mahmoud Kheir-Eddine , Michael Banf , Gregor Steinhagen

Recommender systems and search are both indispensable in facilitating personalization and ease of browsing in online fashion platforms. However, the two tools often operate independently, failing to combine the strengths of recommender…

Information Retrieval · Computer Science 2022-07-26 Karin Sevegnani , Arjun Seshadri , Tian Wang , Anurag Beniwal , Julian McAuley , Alan Lu , Gerard Medioni

Semi-supervised learning (SSL), which aims at leveraging a few labeled images and a large number of unlabeled images for network training, is beneficial for relieving the burden of data annotation in medical image segmentation. According to…

Image and Video Processing · Electrical Eng. & Systems 2022-02-15 Xinkai Zhao , Chaowei Fang , De-Jun Fan , Xutao Lin , Feng Gao , Guanbin Li

Various contrastive learning approaches have been proposed in recent years and achieve significant empirical success. While effective and prevalent, contrastive learning has been less explored for time series data. A key component of…

The Industrial Internet of Things (IIoT) integrates intelligent sensing, communication, and analytics into industrial environments, including manufacturing, energy, and critical infrastructure. While IIoT enables predictive maintenance and…

Machine Learning · Computer Science 2026-02-03 Lin Liu , Rita Machacy , Simi Kuniyilh

Self-supervised contrastive learning offers a means of learning informative features from a pool of unlabeled data. In this paper, we delve into another useful approach -- providing a way of selecting a core-set that is entirely unlabeled.…

Machine Learning · Computer Science 2021-04-08 Jeongwoo Ju , Heechul Jung , Yoonju Oh , Junmo Kim

Medical image classification has been widely adopted in medical image analysis. However, due to the difficulty of collecting and labeling data in the medical area, medical image datasets are usually highly-imbalanced. To address this…

Computer Vision and Pattern Recognition · Computer Science 2022-09-02 Zhixiong Yang , Junwen Pan , Yanzhan Yang , Xiaozhou Shi , Hong-Yu Zhou , Zhicheng Zhang , Cheng Bian

The graph with complex annotations is the most potent data type, whose constantly evolving motivates further exploration of the unsupervised dynamic graph representation. One of the representative paradigms is graph contrastive learning. It…

Machine Learning · Computer Science 2024-12-20 Yiming Xu , Bin Shi , Teng Ma , Bo Dong , Haoyi Zhou , Qinghua Zheng

Recommender systems often struggle with long-tail distributions and limited item catalog exposure, where a small subset of popular items dominates recommendations. This challenge is especially critical in large-scale online retail settings…

Information Retrieval · Computer Science 2026-02-10 Vasileios Karlis , Ezgi Yıldırım , David Vos , Maarten de Rijke

This study introduces a data-driven, machine learning-based method to detect suitable control variables and instruments for assessing the causal effect of a treatment on an outcome in observational data. Our approach tests the joint…

Econometrics · Economics 2026-05-20 Nicolas Apfel , Julia Hatamyar , Martin Huber , Jannis Kueck

Radio Frequency (RF) device fingerprinting has been recognized as a potential technology for enabling automated wireless device identification and classification. However, it faces a key challenge due to the domain shift that could arise…

Machine Learning · Computer Science 2024-03-08 Jun Chen , Weng-Keen Wong , Bechir Hamdaoui

Modern Review Helpfulness Prediction systems are dependent upon multiple modalities, typically texts and images. Unfortunately, those contemporary approaches pay scarce attention to polish representations of cross-modal relations and tend…

Computation and Language · Computer Science 2026-05-13 Thong Nguyen , Xiaobao Wu , Anh-Tuan Luu , Cong-Duy Nguyen , Zhen Hai , Lidong Bing
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