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Test-time adaptation (TTA) has recently emerged as a promising approach for improving time series forecasting (TSF) under distribution shift. Existing TSF-TTA methods differ in how they utilize revealed targets, yet the resulting adaptation…

机器学习 · 计算机科学 2026-05-19 Haochun Wang , Ruichen Xu , Georgios Kementzidis , Karen Cho , Sebastian Ramirez Villarreal , Yuefan Deng

Recently, various contrastive learning techniques have been developed to categorize time series data and exhibit promising performance. A general paradigm is to utilize appropriate augmentations and construct feasible positive samples such…

机器学习 · 计算机科学 2024-10-11 Qianying Ren , Dongsheng Luo , Dongjin Song

We propose the Uncertainty Contrastive Framework (UCF), a Positive-Unlabeled (PU) representation learning framework that integrates uncertainty-aware contrastive loss, adaptive temperature scaling, and a self-attention-guided LSTM encoder…

机器学习 · 计算机科学 2025-12-11 Elias Hossain , Umesh Biswas , Charan Gudla , Sai Phani Parsa

Multi-task feature learning aims to identity the shared features among tasks to improve generalization. It has been shown that by minimizing non-convex learning models, a better solution than the convex alternatives can be obtained.…

机器学习 · 计算机科学 2015-06-03 Yaru Fan , Yilun Wang

This paper presents a novel deep learning architecture to classify structured objects in datasets with a large number of visually similar categories. We model sequences of images as linear-chain CRFs, and jointly learn the parameters from…

计算机视觉与模式识别 · 计算机科学 2019-11-19 Eran Goldman , Jacob Goldberger

Clustered federated learning (CFL) is proposed to mitigate the performance deterioration stemming from data heterogeneity in federated learning (FL) by grouping similar clients for cluster-wise model training. However, current CFL methods…

机器学习 · 计算机科学 2024-04-01 Yuxin Zhang , Haoyu Chen , Zheng Lin , Zhe Chen , Jin Zhao

We investigate the high-dimensional data clustering problem by proposing a novel and unsupervised representation learning model called Robust Flexible Auto-weighted Local-coordinate Concept Factorization (RFA-LCF). RFA-LCF integrates the…

计算机视觉与模式识别 · 计算机科学 2019-05-28 Zhao Zhang , Yan Zhang , Sheng Li , Guangcan Liu , Meng Wang , Shuicheng Yan

Test-time adaptation (TTA) refers to adjusting the model during the testing phase to cope with changes in sample distribution and enhance the model's adaptability to new environments. In real-world scenarios, models often encounter samples…

计算机视觉与模式识别 · 计算机科学 2025-11-18 Ziqiong Liu , Yushun Tang , Junyang Ji , Zhihai He

Learning by integrating multiple heterogeneous data sources is a common requirement in many tasks. Collective Matrix Factorization (CMF) is a technique to learn shared latent representations from arbitrary collections of matrices. It can be…

机器学习 · 计算机科学 2021-09-29 Ragunathan Mariappan , Vaibhav Rajan

Real-world federated learning faces two key challenges: limited access to labelled data and the presence of heterogeneous multi-modal inputs. This paper proposes TACTFL, a unified framework for semi-supervised multi-modal federated…

分布式、并行与集群计算 · 计算机科学 2025-09-23 Guanxiong Sun , Majid Mirmehdi , Zahraa Abdallah , Raul Santos-Rodriguez , Ian Craddock , Telmo de Menezes e Silva Filho

In computer vision, contrastive learning is the most advanced unsupervised learning framework. Yet most previous methods simply apply fixed composition of data augmentations to improve data efficiency, which ignores the changes in their…

计算机视觉与模式识别 · 计算机科学 2023-04-20 Yuhan Zhang , He Zhu , Shan Yu

Detecting trajectory anomalies is a vital task in modern Intelligent Transportation Systems (ITS), enabling the identification of unsafe, inefficient, or irregular travel behaviours. While deep learning has emerged as the dominant approach,…

机器学习 · 计算机科学 2025-11-24 Rui Xue , Dan He , Fengmei Jin , Chen Zhang , Xiaofang Zhou

We present a contrasting learning approach with data augmentation techniques to learn document representations in an unsupervised manner. Inspired by recent contrastive self-supervised learning algorithms used for image and NLP pretraining,…

Anomaly detection is increasingly becoming crucial for maintaining the safety, reliability, and efficiency of industrial systems. Recently, with the advent of digital twins and data-driven decision-making, several statistical and…

机器学习 · 计算机科学 2026-01-06 Mohammed Ayalew Belay , Adil Rasheed , Pierluigi Salvo Rossi

Time series classification (TSC) is home to a number of algorithm groups that utilise different kinds of discriminatory patterns. One of these groups describes classifiers that predict using phase dependant intervals. The time series forest…

机器学习 · 计算机科学 2021-05-11 Matthew Middlehurst , James Large , Anthony Bagnall

In recent years, impressive performance of deep learning technology has been recognized in Synthetic Aperture Radar (SAR) Automatic Target Recognition (ATR). Since a large amount of annotated data is required in this technique, it poses a…

计算机视觉与模式识别 · 计算机科学 2024-08-08 Yikui Zhai , Wenlve Zhou , Bing Sun , Jingwen Li , Qirui Ke , Zilu Ying , Junying Gan , Chaoyun Mai , Ruggero Donida Labati , Vincenzo Piuri , Fabio Scotti

Accurate prediction of the need for invasive mechanical ventilation (IMV) in intensive care units (ICUs) patients is crucial for timely interventions and resource allocation. However, variability in patient populations, clinical practices,…

机器学习 · 计算机科学 2026-01-28 Xiaolei Lu , Shamim Nemati

Text recognition methods are gaining rapid development. Some advanced techniques, e.g., powerful modules, language models, and un- and semi-supervised learning schemes, consecutively push the performance on public benchmarks forward.…

计算机视觉与模式识别 · 计算机科学 2024-01-01 Ziyin Zhang , Ning Lu , Minghui Liao , Yongshuai Huang , Cheng Li , Min Wang , Wei Peng

We introduce an approach for incremental learning that preserves feature descriptors of training images from previously learned classes, instead of the images themselves, unlike most existing work. Keeping the much lower-dimensional feature…

计算机视觉与模式识别 · 计算机科学 2020-08-26 Ahmet Iscen , Jeffrey Zhang , Svetlana Lazebnik , Cordelia Schmid

Joint analysis of data from multiple information repositories facilitates uncovering the underlying structure in heterogeneous datasets. Single and coupled matrix-tensor factorization (CMTF) has been widely used in this context for…