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相关论文: Correlated Time Series Self-Supervised Representat…

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Deep neural networks require collecting and annotating large amounts of data to train successfully. In order to alleviate the annotation bottleneck, we propose a novel self-supervised representation learning approach for spatiotemporal…

计算机视觉与模式识别 · 计算机科学 2019-10-29 Alaaeldin El-Nouby , Shuangfei Zhai , Graham W. Taylor , Joshua M. Susskind

We propose a lightly-supervised approach for information extraction, in particular named entity classification, which combines the benefits of traditional bootstrapping, i.e., use of limited annotations and interpretability of extraction…

计算与语言 · 计算机科学 2018-05-30 Marco A. Valenzuela-Escárcega , Ajay Nagesh , Mihai Surdeanu

The majority of real-world processes are spatiotemporal, and the data generated by them exhibits both spatial and temporal evolution. Weather is one of the most essential processes in this domain, and weather forecasting has become a…

机器学习 · 计算机科学 2024-09-24 Shakir Showkat Sofi , Ivan Oseledets

Deep learning has been actively studied for time series forecasting, and the mainstream paradigm is based on the end-to-end training of neural network architectures, ranging from classical LSTM/RNNs to more recent TCNs and Transformers.…

机器学习 · 计算机科学 2022-05-06 Gerald Woo , Chenghao Liu , Doyen Sahoo , Akshat Kumar , Steven Hoi

Disentangled representation learning offers useful properties such as dimension reduction and interpretability, which are essential to modern deep learning approaches. Although deep learning techniques have been widely applied to…

机器学习 · 计算机科学 2022-04-11 Sichen Zhao , Wei Shao , Jeffrey Chan , Flora D. Salim

This paper introduces a new sparse spatio-temporal structured Gaussian process regression framework for online and offline Bayesian inference. This is the first framework that gives a time-evolving representation of the interdependencies…

机器学习 · 统计学 2018-08-01 Danil Kuzin , Olga Isupova , Lyudmila Mihaylova

Downsampling-based methods for time series forecasting have attracted increasing attention due to their superiority in capturing sequence trends. However, this approaches mainly capture dependencies within subsequences but neglect…

计算工程、金融与科学 · 计算机科学 2026-01-21 Zhangyao Song , Nanqing Jiang , Miaohong He , Xiaoyu Zhao , Tao Guo

Analyzing temporal developments is crucial for the accurate prognosis of many medical conditions. Temporal changes that occur over short time scales are key to assessing the health of physiological functions, such as the cardiac cycle.…

Learning a good representation is an essential component for deep reinforcement learning (RL). Representation learning is especially important in multitask and partially observable settings where building a representation of the unknown…

Contrastive learning methods have shown an impressive ability to learn meaningful representations for image or time series classification. However, these methods are less effective for time series forecasting, as optimization of instance…

机器学习 · 计算机科学 2024-11-13 Xiaochen Zheng , Xingyu Chen , Manuel Schürch , Amina Mollaysa , Ahmed Allam , Michael Krauthammer

The prevalence of wearable sensors (e.g., smart wristband) is creating unprecedented opportunities to not only inform health and wellness states of individuals, but also assess and infer personal attributes, including demographic and…

信号处理 · 电气工程与系统科学 2020-05-29 Xian Wu , Chao Huang , Pablo Roblesgranda , Nitesh Chawla

Existing methods for multi-modal time series representation learning aim to disentangle the modality-shared and modality-specific latent variables. Although achieving notable performances on downstream tasks, they usually assume an…

机器学习 · 计算机科学 2024-05-28 Ruichu Cai , Zhifang Jiang , Zijian Li , Weilin Chen , Xuexin Chen , Zhifeng Hao , Yifan Shen , Guangyi Chen , Kun Zhang

Text style transfer is an important task in controllable language generation. Supervised approaches have pushed performance improvement on style-oriented rewriting such as formality conversion. However, challenges remain due to the scarcity…

计算与语言 · 计算机科学 2022-05-20 Zhengyuan Liu , Nancy F. Chen

Can meta-learning discover generic ways of processing time series (TS) from a diverse dataset so as to greatly improve generalization on new TS coming from different datasets? This work provides positive evidence to this using a broad…

机器学习 · 计算机科学 2020-12-16 Boris N. Oreshkin , Dmitri Carpov , Nicolas Chapados , Yoshua Bengio

Time series analysis has gained significant attention due to its critical applications in diverse fields such as healthcare, finance, and sensor networks. The complexity and non-stationarity of time series make it challenging to capture the…

机器学习 · 计算机科学 2024-10-31 Guancen Lin , Cong Shen , Aijing Lin

Learning from spatio-temporal data has numerous applications such as human-behavior analysis, object tracking, video compression, and physics simulation.However, existing methods still perform poorly on challenging video tasks such as…

机器学习 · 计算机科学 2020-10-06 Jiahao Su , Wonmin Byeon , Jean Kossaifi , Furong Huang , Jan Kautz , Animashree Anandkumar

Unsupervised/self-supervised time series representation learning is a challenging problem because of its complex dynamics and sparse annotations. Existing works mainly adopt the framework of contrastive learning with the time-based…

机器学习 · 计算机科学 2022-05-31 Ling Yang , Shenda Hong

Spatio-temporal representation learning is critical for video self-supervised representation. Recent approaches mainly use contrastive learning and pretext tasks. However, these approaches learn representation by discriminating sampled…

计算机视觉与模式识别 · 计算机科学 2021-12-21 Yujia Zhang , Lai-Man Po , Xuyuan Xu , Mengyang Liu , Yexin Wang , Weifeng Ou , Yuzhi Zhao , Wing-Yin Yu

For a robot deployed in the world, it is desirable to have the ability of autonomous learning to improve its initial pre-set knowledge. We formalize this as a bootstrapped self-supervised learning problem where a system is initially…

计算机视觉与模式识别 · 计算机科学 2021-08-03 Yihao Zhang , John J. Leonard

Natural behavior consists of dynamics that are both unpredictable, can switch suddenly, and unfold over many different timescales. While some success has been found in building representations of behavior under constrained or simplified…

机器学习 · 计算机科学 2022-06-15 Mehdi Azabou , Michael Mendelson , Maks Sorokin , Shantanu Thakoor , Nauman Ahad , Carolina Urzay , Eva L. Dyer