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Skeleton-based action recognition is an important task that requires the adequate understanding of movement characteristics of a human action from the given skeleton sequence. Recent studies have shown that exploring spatial and temporal…

Computer Vision and Pattern Recognition · Computer Science 2019-04-01 Chenyang Si , Wentao Chen , Wei Wang , Liang Wang , Tieniu Tan

Spatial transcriptomics (ST) technologies enable gene expression profiling with spatial resolution, offering unprecedented insights into tissue organization and disease heterogeneity. However, current analysis methods often struggle with…

We introduce a novel approach for temporal activity segmentation with timestamp supervision. Our main contribution is a graph convolutional network, which is learned in an end-to-end manner to exploit both frame features and connections…

Computer Vision and Pattern Recognition · Computer Science 2022-08-03 Hamza Khan , Sanjay Haresh , Awais Ahmed , Shakeeb Siddiqui , Andrey Konin , M. Zeeshan Zia , Quoc-Huy Tran

Spatiotemporal time series are usually collected via monitoring sensors placed at different locations, which usually contain missing values due to various failures, such as mechanical damages and Internet outages. Imputing the missing…

Machine Learning · Computer Science 2024-10-24 Baoyu Jing , Dawei Zhou , Kan Ren , Carl Yang

For graph self-supervised learning (GSSL), masked autoencoder (MAE) follows the generative paradigm and learns to reconstruct masked graph edges or node features. Contrastive Learning (CL) maximizes the similarity between augmented views of…

Machine Learning · Computer Science 2023-10-25 Yuxiang Wang , Xiao Yan , Chuang Hu , Fangcheng Fu , Wentao Zhang , Hao Wang , Shuo Shang , Jiawei Jiang

Positional and structural encodings (PSE) enable better identifiability of nodes within a graph, rendering them essential tools for empowering modern GNNs, and in particular graph Transformers. However, designing PSEs that work optimally…

Pretrained Language Models (PLMs) benefit from external knowledge stored in graph structures for various downstream tasks. However, bridging the modality gap between graph structures and text remains a significant challenge. Traditional…

Computation and Language · Computer Science 2024-04-11 Shuzhou Yuan , Michael Färber

Graph Neural Networks (GNNs) have advanced spatiotemporal forecasting by leveraging relational inductive biases among sensors (or any other measuring scheme) represented as nodes in a graph. However, current methods often rely on Recurrent…

Machine Learning · Computer Science 2024-05-30 Aref Einizade , Fragkiskos D. Malliaros , Jhony H. Giraldo

Timely detected anomalies in the chemical technological processes, as well as the earliest detection of the cause of the fault, significantly reduce the production cost in the industrial factories. Data on the state of the technological…

Artificial Intelligence · Computer Science 2022-10-21 Alexander Kovalenko , Vitaliy Pozdnyakov , Ilya Makarov

Causal analysis helps us understand variables that are responsible for system failures. This improves fault detection and makes system more reliable. In this work, we present a new method that combines causal inference with machine learning…

Systems and Control · Electrical Eng. & Systems 2025-08-05 Karthik Peddi , Sai Ram Aditya Parisineni , Hemanth Macharla , Mayukha Pal

Graph clustering discovers groups or communities within networks. Deep learning methods such as autoencoders (AE) extract effective clustering and downstream representations but cannot incorporate rich structural information. While Graph…

Machine Learning · Computer Science 2022-04-28 Gayan K. Kulatilleke , Marius Portmann , Shekhar S. Chandra

Skeleton-based action recognition has achieved remarkable results in human action recognition with the development of graph convolutional networks (GCNs). However, the recent works tend to construct complex learning mechanisms with…

Computer Vision and Pattern Recognition · Computer Science 2025-09-15 Dongjingdin Liu , Pengpeng Chen , Miao Yao , Yijing Lu , Zijie Cai , Yuxin Tian

Anomaly detection in dynamic graphs presents a significant challenge due to the temporal evolution of graph structures and attributes. The conventional approaches that tackle this problem typically employ an unsupervised learning framework,…

Machine Learning · Computer Science 2024-08-16 Jie Liu , Xuequn Shang , Xiaolin Han , Kai Zheng , Hongzhi Yin

Time series data analysis is prevalent across various domains, including finance, healthcare, and environmental monitoring. Traditional time series clustering methods often struggle to capture the complex temporal dependencies inherent in…

Machine Learning · Computer Science 2024-11-27 Amirabbas Afzali , Hesam Hosseini , Mohmmadamin Mirzai , Arash Amini

Motor imagery (MI) based brain-computer interfaces (BCIs) hold significant potential for assistive technologies and neurorehabilitation. However, the precise and efficient decoding of MI remains challenging due to their non-stationary…

Human-Computer Interaction · Computer Science 2025-09-09 Yi Wang , Haodong Zhang , Hongqi Li

Interchanges are crucial nodes for vehicle transfers between highways, yet the lack of real-time ramp detectors creates blind spots in traffic prediction. To address this, we propose a Spatio-Temporal Decoupled Autoencoder (STDAE), a…

Machine Learning · Computer Science 2025-12-01 Yongchao Li , Jun Chen , Zhuoxuan Li , Chao Gao , Yang Li , Chu Zhang , Changyin Dong

Identifying causal relations among multi-variate time series is one of the most important elements towards understanding the complex mechanisms underlying the dynamic system. It provides critical tools for forecasting, simulations and…

Machine Learning · Computer Science 2023-02-22 Yang Sun , Yifan Xie

In computer vision research, the process of automating architecture engineering, Neural Architecture Search (NAS), has gained substantial interest. In the past, NAS was hardly accessible to researchers without access to large-scale compute…

Computer Vision and Pattern Recognition · Computer Science 2020-08-27 David Friede , Jovita Lukasik , Heiner Stuckenschmidt , Margret Keuper

While dynamic graph neural networks have shown promise in various applications, explaining their predictions on continuous-time dynamic graphs (CTDGs) is difficult. This paper investigates a new research task: self-interpretable GNNs for…

Machine Learning · Computer Science 2024-05-30 Lanting Fang , Yulian Yang , Kai Wang , Shanshan Feng , Kaiyu Feng , Jie Gui , Shuliang Wang , Yew-Soon Ong

Simultaneous recordings from thousands of neurons across multiple brain areas reveal rich mixtures of activity that are shared between regions and dynamics that are unique to each region. Existing alignment or multi-view methods neglect…

Machine Learning · Computer Science 2025-10-24 Ram Dyuthi Sristi , Sowmya Manojna Narasimha , Jingya Huang , Alice Despatin , Simon Musall , Vikash Gilja , Gal Mishne