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This paper presents TS2Vec, a universal framework for learning representations of time series in an arbitrary semantic level. Unlike existing methods, TS2Vec performs contrastive learning in a hierarchical way over augmented context views,…

机器学习 · 计算机科学 2022-02-04 Zhihan Yue , Yujing Wang , Juanyong Duan , Tianmeng Yang , Congrui Huang , Yunhai Tong , Bixiong Xu

The work in this paper is driven by the question how to exploit the temporal cues available in videos for their accurate classification, and for human action recognition in particular? Thus far, the vision community has focused on…

计算机视觉与模式识别 · 计算机科学 2017-11-23 Ali Diba , Mohsen Fayyaz , Vivek Sharma , Amir Hossein Karami , Mohammad Mahdi Arzani , Rahman Yousefzadeh , Luc Van Gool

Semantic Segmentation is an important module for autonomous robots such as self-driving cars. The advantage of video segmentation approaches compared to single image segmentation is that temporal image information is considered, and their…

计算机视觉与模式识别 · 计算机科学 2019-07-17 Andreas Pfeuffer , Klaus Dietmayer

Drawing inspiration from gradient-based meta-learning methods with infinitely small gradient steps, we introduce Continuous-Time Meta-Learning (COMLN), a meta-learning algorithm where adaptation follows the dynamics of a gradient vector…

机器学习 · 计算机科学 2022-03-04 Tristan Deleu , David Kanaa , Leo Feng , Giancarlo Kerg , Yoshua Bengio , Guillaume Lajoie , Pierre-Luc Bacon

In this work, we investigate the time series representation learning problem using self-supervised techniques. Contrastive learning is well-known in this area as it is a powerful method for extracting information from the series and…

机器学习 · 计算机科学 2024-10-08 Duy A. Nguyen , Trang H. Tran , Huy Hieu Pham , Phi Le Nguyen , Lam M. Nguyen

While conventional methods for sequential learning focus on interaction between consecutive inputs, we suggest a new method which captures composite semantic flows with variable-length dependencies. In addition, the semantic structures…

机器学习 · 计算机科学 2019-01-29 Kyoung-Woon On , Eun-Sol Kim , Yu-Jung Heo , Byoung-Tak Zhang

Novel contexts may often arise in complex querying scenarios such as in evidence-based medicine (EBM) involving biomedical literature, that may not explicitly refer to entities or canonical concept forms occurring in any fact- or rule-based…

计算与语言 · 计算机科学 2019-11-12 Manirupa Das , Juanxi Li , Eric Fosler-Lussier , Simon Lin , Soheil Moosavinasab , Steve Rust , Yungui Huang , Rajiv Ramnath

Video large language models (Video-LLMs) have made strong progress in general video understanding, but their ability to maintain temporal object consistency remains underexplored. Existing benchmarks often emphasize event recognition,…

计算机视觉与模式识别 · 计算机科学 2026-05-13 Junzhe Chen , Siyuan Meng , Yuxi Chen , Man Zhao , Wenyao Gui , Xiaojie Guo

This work addresses the challenge of streamed video depth estimation, which expects not only per-frame accuracy but, more importantly, cross-frame consistency. We argue that sharing contextual information between frames or clips is pivotal…

计算机视觉与模式识别 · 计算机科学 2025-06-10 Jiahao Shao , Yuanbo Yang , Hongyu Zhou , Youmin Zhang , Yujun Shen , Vitor Guizilini , Yue Wang , Matteo Poggi , Yiyi Liao

Generalized Category Discovery (GCD) is an emerging and challenging open-world problem that has garnered increasing attention in recent years. Most existing GCD methods focus on discovering categories in static images. However, relying…

计算机视觉与模式识别 · 计算机科学 2025-09-09 Zhang Jing , Pu Nan , Xie Yu Xiang , Guo Yanming , Lu Qianqi , Zou Shiwei , Yan Jie , Chen Yan

Context-aware recommender systems (CARSs) apply sensing and analysis of user context in order to provide personalized services. Adding context to a recommendation model is challenging, since the addition of context may increases both the…

机器学习 · 计算机科学 2020-08-07 Amit Livne , Moshe Unger , Bracha Shapira , Lior Rokach

Long short-term memory(LSTM) units on sequence-based models are being used in translation, question-answering systems, classification tasks due to their capability of learning long-term dependencies. In Natural language generation, LSTM…

计算与语言 · 计算机科学 2020-05-04 Sivasurya Santhanam

Given a single labeled example, in-context segmentation aims to segment corresponding objects. This setting, known as one-shot segmentation in few-shot learning, explores the segmentation model's generalization ability and has been applied…

计算机视觉与模式识别 · 计算机科学 2025-04-18 Mengshi Qi , Pengfei Zhu , Xiangtai Li , Xiaoyang Bi , Lu Qi , Huadong Ma , Ming-Hsuan Yang

With the rapid development of digital multimedia, video understanding has become an important field. For action recognition, temporal dimension plays an important role, and this is quite different from image recognition. In order to learn…

计算机视觉与模式识别 · 计算机科学 2020-02-11 Qian Liu , Tao Wang , Jie Liu , Yang Guan , Qi Bu , Longfei Yang

Time Series Classification (TSC) has received much attention in the past two decades and is still a crucial and challenging problem in data science and knowledge engineering. Indeed, along with the increasing availability of time series…

机器学习 · 计算机科学 2023-08-14 Aurélien Renault , Alexis Bondu , Vincent Lemaire , Dominique Gay

Temporally locating and classifying action segments in long untrimmed videos is of particular interest to many applications like surveillance and robotics. While traditional approaches follow a two-step pipeline, by generating frame-wise…

计算机视觉与模式识别 · 计算机科学 2019-04-03 Yazan Abu Farha , Juergen Gall

Time series generation (TSG) is widely used across domains, yet most existing methods assume regular sampling and fixed output resolutions. These assumptions are often violated in practice, where observations are irregular and sparse, while…

机器学习 · 计算机科学 2026-02-02 Xu Zhang , Junwei Deng , Chang Xu , Hao Li , Jiang Bian

Empowering LLMs with the ability to precisely understand long contexts is crucial for many downstream applications. However, handling long contexts with conventional transformer architecture requires substantial training and inference…

计算与语言 · 计算机科学 2024-12-24 Zhenyu Li , Yike Zhang , Tengyu Pan , Yutao Sun , Zhichao Duan , Junjie Fang , Rong Han , Zixuan Wang , Jianyong Wang

The limited context window of contemporary large language models (LLMs) remains a primary bottleneck for their broader application across diverse domains. Although continual pre-training on long-context data offers a straightforward…

计算与语言 · 计算机科学 2026-04-10 Wei Han , Pan Zhou , Soujanya Poria , Shuicheng Yan

It has been proposed that, when processing a stream of events, humans divide their experiences in terms of inferred latent causes (LCs) to support context-dependent learning. However, when shared structure is present across contexts, it is…

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