中文
相关论文

相关论文: CARE: Contrastive Alignment for ADL Recognition fr…

200 篇论文

Many existing unsupervised domain adaptation (UDA) methods primarily focus on covariate shift, limiting their effectiveness in imbalanced domain adaptation (IDA) where both covariate shift and label shift coexist. Recent IDA methods have…

计算机视觉与模式识别 · 计算机科学 2024-12-31 Xiaona Sun , Zhenyu Wu , Zhiqiang Zhan , Yang Ji

As a substantial amount of multivariate time series data is being produced by the complex systems in Smart Manufacturing, improved anomaly detection frameworks are needed to reduce the operational risks and the monitoring burden placed on…

机器学习 · 计算机科学 2022-01-25 Tareq Tayeh , Sulaiman Aburakhia , Ryan Myers , Abdallah Shami

The sensor-based recognition of Activities of Daily Living (ADLs) in smart home environments enables several applications in the areas of energy management, safety, well-being, and healthcare. ADLs recognition is typically based on deep…

人工智能 · 计算机科学 2025-03-24 Gabriele Civitarese , Michele Fiori , Priyankar Choudhary , Claudio Bettini

Supervised anomaly detection methods perform well in identifying known anomalies that are well represented in the training set. However, they often struggle to generalise beyond the training distribution due to decision boundaries that lack…

We introduce a weakly supervised method for representation learning based on aligning temporal sequences (e.g., videos) of the same process (e.g., human action). The main idea is to use the global temporal ordering of latent correspondences…

计算机视觉与模式识别 · 计算机科学 2021-05-12 Isma Hadji , Konstantinos G. Derpanis , Allan D. Jepson

Self-supervised learning has recently achieved great success in representation learning without human annotations. The dominant method -- that is contrastive learning, is generally based on instance discrimination tasks, i.e., individual…

计算机视觉与模式识别 · 计算机科学 2022-12-06 Chen Feng , Ioannis Patras

In recent years, remarkable results have been achieved in self-supervised action recognition using skeleton sequences with contrastive learning. It has been observed that the semantic distinction of human action features is often…

计算机视觉与模式识别 · 计算机科学 2023-05-12 Yilei Hua , Wenhan Wu , Ce Zheng , Aidong Lu , Mengyuan Liu , Chen Chen , Shiqian Wu

In this paper, we focus on the spatio-temporal aspect of recognizing Activities of Daily Living (ADL). ADL have two specific properties (i) subtle spatio-temporal patterns and (ii) similar visual patterns varying with time. Therefore, ADL…

计算机视觉与模式识别 · 计算机科学 2020-07-08 Srijan Das , Saurav Sharma , Rui Dai , Francois Bremond , Monique Thonnat

Autism Spectrum Disorder (ASD) is a neurodevelopmental disorder characterized by complex physiological processes. Previous research has predominantly focused on static cerebral interactions, often neglecting the brain's dynamic nature and…

机器学习 · 计算机科学 2024-09-11 Peng Wang , Xin Wen , Ruochen Cao , Chengxin Gao , Yanrong Hao , Rui Cao

With recent advancements in deep learning methods, automatically learning deep features from the original data is becoming an effective and widespread approach. However, the hand-crafted expert knowledge-based features are still insightful.…

机器学习 · 计算机科学 2021-05-10 Guanjie Huang , Fenglong Ma

Anomaly detection aims at identifying deviant samples from the normal data distribution. Contrastive learning has provided a successful way to sample representation that enables effective discrimination on anomalies. However, when…

计算机视觉与模式识别 · 计算机科学 2022-07-26 Gaoang Wang , Yibing Zhan , Xinchao Wang , Mingli Song , Klara Nahrstedt

Learning scientific document representations can be substantially improved through contrastive learning objectives, where the challenge lies in creating positive and negative training samples that encode the desired similarity semantics.…

计算与语言 · 计算机科学 2022-10-20 Malte Ostendorff , Nils Rethmeier , Isabelle Augenstein , Bela Gipp , Georg Rehm

We introduce supervised contrastive active learning (SCAL) and propose efficient query strategies in active learning based on the feature similarity (featuresim) and principal component analysis based feature-reconstruction error (fre) to…

机器学习 · 计算机科学 2022-08-16 Ranganath Krishnan , Nilesh Ahuja , Alok Sinha , Mahesh Subedar , Omesh Tickoo , Ravi Iyer

A major bottleneck in training robust Human-Activity Recognition models (HAR) is the need for large-scale labeled sensor datasets. Because labeling large amounts of sensor data is an expensive task, unsupervised and semi-supervised learning…

机器学习 · 计算机科学 2022-02-03 Yash Jain , Chi Ian Tang , Chulhong Min , Fahim Kawsar , Akhil Mathur

The audio-visual event localization task requires identifying concurrent visual and auditory events from unconstrained videos within a network model, locating them, and classifying their category. The efficient extraction and integration of…

计算机视觉与模式识别 · 计算机科学 2024-08-06 Xiang He , Xiangxi Liu , Yang Li , Dongcheng Zhao , Guobin Shen , Qingqun Kong , Xin Yang , Yi Zeng

The recent surge of large language models (LLMs) highlights their ability to perform in-context learning, i.e., "learning" to perform a task from a few demonstrations in the context without any parameter updates. However, their capabilities…

计算与语言 · 计算机科学 2023-07-07 Tianle Cai , Kaixuan Huang , Jason D. Lee , Mengdi Wang

Neural Architecture Search (NAS) methods are widely used in various industries to obtain high quality taskspecific solutions with minimal human intervention. Event Sequences find widespread use in various industrial applications including…

For low-semantic sensor signals from human activity recognition (HAR), contrastive learning (CL) is essential to implement novel applications or generic models without manual annotation, which is a high-performance self-supervised learning…

机器学习 · 计算机科学 2026-02-04 Qingyu Wu , Jianfei Shen , Feiyi Fan , Yang Gu , Chenyang Xu , Yiqiang Chen

Robust frame-wise embeddings are essential to perform video analysis and understanding tasks. We present a self-supervised method for representation learning based on aligning temporal video sequences. Our framework uses a transformer-based…

计算机视觉与模式识别 · 计算机科学 2025-03-04 Keyne Oei , Amr Gomaa , Anna Maria Feit , João Belo

We address the well-known wearable activity recognition problem of having to work with sensors that are non-optimal in terms of information they provide but have to be used due to wearability/usability concerns (e.g. the need to work with…

机器学习 · 计算机科学 2022-10-05 Vitor Fortes Rey , Sungho Suh , Paul Lukowicz