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Irregular multivariate time series (IMTS) are prevalent in real-world applications across many fields, where varying sensor frequencies and asynchronous measurements pose significant modeling challenges. Existing solutions often rely on a…

Machine Learning · Computer Science 2025-05-08 Yulong Wang , Xiaofeng Hu , Xiaojian Cui , Kai Wang

Multivariate time-series forecasting is vital in various domains, e.g., economic planning and weather prediction. Deep train-from-scratch models have exhibited effective performance yet require large amounts of data, which limits real-world…

Machine Learning · Computer Science 2025-02-21 Ching Chang , Wei-Yao Wang , Wen-Chih Peng , Tien-Fu Chen

Deep Learning (DL) methods have dramatically increased in popularity in recent years, with significant growth in their application to supervised learning problems in the biomedical sciences. However, the greater prevalence and complexity of…

Machine Learning · Statistics 2023-10-30 David K Lim , Naim U Rashid , Junier B Oliva , Joseph G Ibrahim

Multivariate time series data provide a robust framework for future predictions by leveraging information across multiple dimensions, ensuring broad applicability in practical scenarios. However, their high dimensionality and mixing…

Machine Learning · Computer Science 2024-11-28 Xuanbing Zhu , Dunbin Shen , Zhongwen Rao , Huiyi Ma , Yingguang Hao , Hongyu Wang

Multivariate Time Series Forecasting (MTSF) involves predicting future values of multiple interrelated time series. Recently, deep learning-based MTSF models have gained significant attention for their promising ability to mine semantics…

Machine Learning · Computer Science 2025-06-17 Chengqing Yu , Fei Wang , Chuanguang Yang , Zezhi Shao , Tao Sun , Tangwen Qian , Wei Wei , Zhulin An , Yongjun Xu

Multivariate time series (MTS) forecasting has a wide range of applications in both industry and academia. Recently, spatial-temporal graph neural networks (STGNNs) have gained popularity as MTS forecasting methods. However, current STGNNs…

Machine Learning · Computer Science 2025-05-20 Huiliang Zhang , Ping Nie , Lijun Sun , Benoit Boulet

We study a mismatch between the deep learning recommendation models' flat architecture, common distributed training paradigm and hierarchical data center topology. To address the associated inefficiencies, we propose Disaggregated…

In recent years, the deployment of large-scale pre-trained models in audio-visual downstream tasks has yielded remarkable outcomes. However, these models, primarily trained on single-modality unconstrained datasets, still encounter…

Machine Learning · Computer Science 2023-12-22 Haoyi Duan , Yan Xia , Mingze Zhou , Li Tang , Jieming Zhu , Zhou Zhao

Motion time series collected from mobile and wearable devices such as smartphones and smartwatches offer significant insights into human behavioral patterns, with wide applications in healthcare, automation, IoT, and AR/XR due to their…

Signal Processing · Electrical Eng. & Systems 2024-10-29 Xiyuan Zhang , Diyan Teng , Ranak Roy Chowdhury , Shuheng Li , Dezhi Hong , Rajesh K. Gupta , Jingbo Shang

Spatio-temporal trajectories provide valuable information about movement and travel behavior, enabling various downstream tasks that in turn power real-world applications. Learning trajectory embeddings can improve task performance but may…

Computer Vision and Pattern Recognition · Computer Science 2023-12-27 Yan Lin , Huaiyu Wan , Shengnan Guo , Jilin Hu , Christian S. Jensen , Youfang Lin

Time series imputation is critical for many real-world applications and has been widely studied. However, existing models often require specialized designs tailored to specific missing patterns, variables, or domains which limits their…

Machine Learning · Computer Science 2024-10-03 Jinguo Cheng , Chunwei Yang , Wanlin Cai , Yuxuan Liang , Qingsong Wen , Yuankai Wu

Distributed multi-task learning (DMTL) effectively improves model generalization performance through the collaborative training of multiple related models. However, in large-scale learning scenarios, communication bottlenecks severely limit…

Information Theory · Computer Science 2025-07-25 Minquan Cheng , Yongkang Wang , Lingyu Zhang , Youlong Wu

Recent advancements in multi-modal artificial intelligence (AI) have revolutionized the fields of stock market forecasting and heart rate monitoring. Utilizing diverse data sources can substantially improve prediction accuracy. Nonetheless,…

Machine Learning · Computer Science 2024-03-21 Zihong Luo , Zheng Tao , Yuxuan Huang , Kexin He , Chengzhi Liu

Multivariate time series (MTS) anomaly detection identifies abnormal patterns where each timestamp contains multiple variables. Existing MTS anomaly detection methods fall into three categories: reconstruction-based, prediction-based, and…

Machine Learning · Computer Science 2025-10-03 Yuanyuan Yao , Yuhan Shi , Lu Chen , Ziquan Fang , Yunjun Gao , Leong Hou U , Yushuai Li , Tianyi Li

Multivariate time series (MTS) are ubiquitous in domains such as healthcare, climate science, and industrial monitoring, but their high dimensionality, limited labeled data, and non-stationary nature pose significant challenges for…

Machine Learning · Computer Science 2025-09-09 Jia Wang , Xiao Wang , Chi Zhang

Multi-task learning (MTL) algorithms typically rely on schemes that combine different task losses or their gradients through weighted averaging. These methods aim to find Pareto stationary points by using heuristics that require access to…

Machine Learning · Computer Science 2026-02-03 Surya Murthy , Kushagra Gupta , Mustafa O. Karabag , David Fridovich-Keil , Ufuk Topcu

Self-supervised learning is an efficient pre-training method for medical image analysis. However, current research is mostly confined to specific-modality data pre-training, consuming considerable time and resources without achieving…

Computer Vision and Pattern Recognition · Computer Science 2023-12-01 Yiwen Ye , Yutong Xie , Jianpeng Zhang , Ziyang Chen , Qi Wu , Yong Xia

Multivariate time-series (MTS) forecasting is a challenging task in many real-world non-stationary dynamic scenarios. In addition to intra-series temporal signals, the inter-series dependency also plays a crucial role in shaping future…

Machine Learning · Computer Science 2023-12-29 Weijun Chen , Heyuan Wang , Ye Tian , Shijie Guan , Ning Liu

Multi-target multi-camera tracking (MTMCT) plays an important role in intelligent video analysis, surveillance video retrieval, and other application scenarios. Nowadays, the deep-learning-based MTMCT has been the mainstream and has…

Computer Vision and Pattern Recognition · Computer Science 2022-09-21 Haohong Liao , Silin Zheng , Xuelin Shen , Mark Junjie Li , Xu Wang

During multimodal model training and testing, certain data modalities may be absent due to sensor limitations, cost constraints, privacy concerns, or data loss, negatively affecting performance. Multimodal learning techniques designed to…

Computer Vision and Pattern Recognition · Computer Science 2026-02-05 Renjie Wu , Hu Wang , Hsiang-Ting Chen , Gustavo Carneiro