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Time series classification is a widely studied problem in the field of time series data mining. Previous research has predominantly focused on scenarios where relevant or foreground subsequences have already been extracted, with each…

Human identification remains to be one of the challenging tasks in computer vision community due to drastic changes in visual features across different viewpoints, lighting conditions, occlusion, etc. Most of the literature has been focused…

Computer Vision and Pattern Recognition · Computer Science 2016-12-28 Shervin Ardeshir , Sandesh Sharma , Ali Broji

This technical report analyzes an egocentric video action detection method we used in the 2021 EPIC-KITCHENS-100 competition hosted in CVPR2021 Workshop. The goal of our task is to locate the start time and the end time of the action in the…

Computer Vision and Pattern Recognition · Computer Science 2021-06-15 Zhiwu Qing , Ziyuan Huang , Xiang Wang , Yutong Feng , Shiwei Zhang , Jianwen Jiang , Mingqian Tang , Changxin Gao , Marcelo H. Ang , Nong Sang

Graph-based semi-supervised learning has been shown to be one of the most effective approaches for classification tasks from a wide range of domains, such as image classification and text classification, as they can exploit the connectivity…

Computer Vision and Pattern Recognition · Computer Science 2020-04-09 Wanyu Lin , Zhaolin Gao , Baochun Li

To enable a safe and effective human-robot cooperation, it is crucial to develop models for the identification of human activities. Egocentric vision seems to be a viable solution to solve this problem, and therefore many works provide deep…

Computer Vision and Pattern Recognition · Computer Science 2023-03-13 Gabriele Goletto , Mirco Planamente , Barbara Caputo , Giuseppe Averta

Though action recognition in videos has achieved great success recently, it remains a challenging task due to the massive computational cost. Designing lightweight networks is a possible solution, but it may degrade the recognition…

Computer Vision and Pattern Recognition · Computer Science 2020-02-11 Wenhao Wu , Dongliang He , Xiao Tan , Shifeng Chen , Yi Yang , Shilei Wen

Node classification in attributed graphs is an important task in multiple practical settings, but it can often be difficult or expensive to obtain labels. Active learning can improve the achieved classification performance for a given…

Machine Learning · Computer Science 2020-07-13 Florence Regol , Soumyasundar Pal , Yingxue Zhang , Mark Coates

Recent advances in Graph Convolutional Neural Networks (GCNNs) have shown their efficiency for non-Euclidean data on graphs, which often require a large amount of labeled data with high cost. It it thus critical to learn graph feature…

Computer Vision and Pattern Recognition · Computer Science 2020-03-20 Xiang Gao , Wei Hu , Guo-Jun Qi

Grounding textual expressions on scene objects from first-person views is a truly demanding capability in developing agents that are aware of their surroundings and behave following intuitive text instructions. Such capability is of…

Computer Vision and Pattern Recognition · Computer Science 2023-10-31 Shuhei Kurita , Naoki Katsura , Eri Onami

Extracting multiscale contextual information and higher-order correlations among skeleton sequences using Graph Convolutional Networks (GCNs) alone is inadequate for effective action classification. Hypergraph convolution addresses the…

Computer Vision and Pattern Recognition · Computer Science 2025-03-03 Abhisek Ray , Ayush Raj , Maheshkumar H. Kolekar

We investigate exocentric-to-egocentric cross-view translation, which aims to generate a first-person (egocentric) view of an actor based on a video recording that captures the actor from a third-person (exocentric) perspective. To this…

Computer Vision and Pattern Recognition · Computer Science 2024-03-12 Mi Luo , Zihui Xue , Alex Dimakis , Kristen Grauman

Short-term action anticipation (STA) in first-person videos is a challenging task that involves understanding the next active object interactions and predicting future actions. Existing action anticipation methods have primarily focused on…

Computer Vision and Pattern Recognition · Computer Science 2023-06-26 Sanket Thakur , Cigdem Beyan , Pietro Morerio , Vittorio Murino , Alessio Del Bue

In this report, we present our champion solutions to five tracks at Ego4D challenge. We leverage our developed InternVideo, a video foundation model, for five Ego4D tasks, including Moment Queries, Natural Language Queries, Future Hand…

Computer Vision and Pattern Recognition · Computer Science 2022-11-18 Guo Chen , Sen Xing , Zhe Chen , Yi Wang , Kunchang Li , Yizhuo Li , Yi Liu , Jiahao Wang , Yin-Dong Zheng , Bingkun Huang , Zhiyu Zhao , Junting Pan , Yifei Huang , Zun Wang , Jiashuo Yu , Yinan He , Hongjie Zhang , Tong Lu , Yali Wang , Limin Wang , Yu Qiao

Graph neural network (GNN) has gained increasing popularity in recent years owing to its capability and flexibility in modeling complex graph structure data. Among all graph learning methods, hypergraph learning is a technique for exploring…

Machine Learning · Computer Science 2024-12-31 Tiehua Zhang , Yuze Liu , Zhishu Shen , Xingjun Ma , Peng Qi , Zhijun Ding , Jiong Jin

Classifying nodes in a graph is a common problem. The ideal classifier must adapt to any imbalances in the class distribution. It must also use information in the clustering structure of real-world graphs. Existing Graph Neural Networks…

Complex Event Processing (CEP) is an event processing paradigm to perform real-time analytics over streaming data and match high-level event patterns. Presently, CEP is limited to process structured data stream. Video streams are…

Computer Vision and Pattern Recognition · Computer Science 2020-07-14 Piyush Yadav , Dhaval Salwala , Edward Curry

The ubiquity of large-scale graphs in node-classification tasks significantly hinders the real-world applications of Graph Neural Networks (GNNs). Node sampling, graph coarsening, and dataset condensation are effective strategies for…

Machine Learning · Computer Science 2024-05-28 Mucong Ding , Yinhan He , Jundong Li , Furong Huang

Nowadays, there is an upsurge of interest in using lifelogging devices. Such devices generate huge amounts of image data; consequently, the need for automatic methods for analyzing and summarizing these data is drastically increasing. We…

Computer Vision and Pattern Recognition · Computer Science 2019-05-13 Estefania Talavera , Nicolai Petkov , Petia Radeva

In complex networks, nodes that share similar structural characteristics often exhibit similar roles (e.g type of users in a social network or the hierarchical position of employees in a company). In order to leverage this relationship, a…

Machine Learning · Computer Science 2020-03-03 George Dasoulas , Giannis Nikolentzos , Kevin Scaman , Aladin Virmaux , Michalis Vazirgiannis

Graph embedding techniques, which learn low-dimensional representations of a graph, are achieving state-of-the-art performance in many graph mining tasks. Most existing embedding algorithms assign a single vector to each node, implicitly…

Social and Information Networks · Computer Science 2020-10-22 Jisung Yoon , Kai-Cheng Yang , Woo-Sung Jung , Yong-Yeol Ahn