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Recently developed pretrained models can encode rich world knowledge expressed in multiple modalities, such as text and images. However, the outputs of these models cannot be integrated into algorithms to solve sequential decision-making…

人工智能 · 计算机科学 2024-06-19 Yunhao Yang , Cyrus Neary , Ufuk Topcu

An approach is presented for making predictions about functional time series. The method is applied to data coming from periodically correlated processes and electricity demand, obtaining accurate point forecasts and narrow prediction bands…

统计方法学 · 统计学 2018-06-29 Antonio Elías , Raúl Jiménez

Time series is a special type of sequence data, a sequence of real-valued random variables collected at even intervals of time. The real-world multivariate time series comes with noises and contains complicated local and global temporal…

机器学习 · 计算机科学 2023-11-21 Site Mo , Haoxin Wang , Bixiong Li , Songhai Fan , Yuankai Wu , Xianggen Liu

Multivariate time series classification is a task with increasing importance due to the proliferation of new problems in various fields (economy, health, energy, transport, crops, etc.) where a large number of information sources are…

机器学习 · 计算机科学 2020-09-09 Francisco J. Baldán , José M. Benítez

Time series analysis is crucial in fields like finance, transportation, and industry. However, traditional models often focus solely on temporal features, limiting their ability to capture underlying information. This paper proposes a novel…

机器学习 · 计算机科学 2025-03-12 Shule Hao , Junpeng Bao , Chuncheng Lu

Understanding time series is crucial for its application in real-world scenarios. Recently, large language models (LLMs) have been increasingly applied to time series tasks, leveraging their strong language capabilities to enhance various…

人工智能 · 计算机科学 2026-01-06 Zhe Xie , Zeyan Li , Xiao He , Longlong Xu , Xidao Wen , Tieying Zhang , Jianjun Chen , Rui Shi , Dan Pei

Existing methods in the Visual Storytelling field often suffer from the problem of generating general descriptions, while the image contains a lot of meaningful contents remaining unnoticed. The failure of informative story generation can…

多媒体 · 计算机科学 2019-08-06 Jiacheng Li , Haizhou Shi , Siliang Tang , Fei Wu , Yueting Zhuang

Load forecasting plays a pivotal role in the safe and stable operation of power systems. Conventional deep learning methods often struggle to adapt to few-shot scenarios frequently encountered in industrial applications. Existing…

信号处理 · 电气工程与系统科学 2026-05-12 Yuxuan Chen , Shuo Dai , Ruoyi Xu , Haipeng Xie

Recently, remarkable progress has been made over large language models (LLMs), demonstrating their unprecedented capability in varieties of natural language tasks. However, completely training a large general-purpose model from the scratch…

机器学习 · 计算机科学 2024-02-06 Yushan Jiang , Zijie Pan , Xikun Zhang , Sahil Garg , Anderson Schneider , Yuriy Nevmyvaka , Dongjin Song

Producing probabilistic forecasts for large collections of similar and/or dependent time series is a practically relevant and challenging task. Classical time series models fail to capture complex patterns in the data, and multivariate…

机器学习 · 统计学 2019-05-30 Yuyang Wang , Alex Smola , Danielle C. Maddix , Jan Gasthaus , Dean Foster , Tim Januschowski

Spatio-temporal deep learning models aims to utilize useful patterns in such data to support tasks like prediction. However, previous deep learning models designed for specific tasks typically require separate training for each use case,…

Pre-trained language models (PLMs) fail to generate long-form narrative text because they do not consider global structure. As a result, the generated texts are often incohesive, repetitive, or lack content. Recent work in story generation…

计算与语言 · 计算机科学 2022-06-08 Yiping Jin , Vishakha Kadam , Dittaya Wanvarie

Energy systems modeling frequently relies on time series data, whether observed or forecast. This is particularly the case, for example, in capacity planning models that use hourly production and load data forecast to occur over the coming…

统计计算 · 统计学 2025-02-13 Kelly Wang , Steven O. Kimbrough

In the last few decades, building regression models for non-scalar variables, including time series, text, image, and video, has attracted increasing interests of researchers from the data analytic community. In this paper, we focus on a…

机器学习 · 计算机科学 2020-12-01 Qiyao Wang , Haiyan Wang , Chetan Gupta , Aniruddha Rajendra Rao , Hamed Khorasgani

Time series analysis is used to understand and predict dynamic processes, including evolving demands in business, weather, markets, and biological rhythms. Exponential smoothing is used in all these domains to obtain simple interpretable…

机器学习 · 统计学 2017-10-02 Avner Abrami , Aleksandr Y. Aravkin , Younghun Kim

Earnings calls represent a uniquely rich and semi-structured source of financial communication, blending scripted managerial commentary with unscripted analyst dialogue. Although recent advances in financial sentiment analysis have…

计算与语言 · 计算机科学 2025-09-05 Alejandro Álvarez Castro , Joaquín Ordieres-Meré

For the challenging task of modeling multivariate time series, we propose a new class of models that use dependent Mat\'ern processes to capture the underlying structure of data, explain their interdependencies, and predict their unknown…

机器学习 · 统计学 2015-02-13 Alexander Vandenberg-Rodes , Babak Shahbaba

The complexity and heterogeneity of data in many real-world applications pose significant challenges for traditional machine learning and signal processing techniques. For instance, in medicine, effective analysis of diverse physiological…

机器学习 · 计算机科学 2024-08-16 Nimeesha Chan , Felix Parker , William Bennett , Tianyi Wu , Mung Yao Jia , James Fackler , Kimia Ghobadi

This paper describes methods for comparative evaluation of the interpretability of models of high dimensional time series data inferred by unsupervised machine learning algorithms. The time series data used in this investigation were logs…

人工智能 · 计算机科学 2020-05-05 Nicholas Hoernle , Kobi Gal , Barbara Grosz , Leilah Lyons , Ada Ren , Andee Rubin

While recent advancements in foundation models have significantly impacted machine learning, rigorous tests on the performance of time series foundation models (TSFMs) remain largely underexplored. This paper presents an empirical study…

机器学习 · 计算机科学 2025-01-09 Syamantak Datta Gupta