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Bearing fault detection is a critical task in predictive maintenance, where accurate and timely fault identification can prevent costly downtime and equipment damage. Traditional attention mechanisms in Transformer neural networks often…

机器学习 · 计算机科学 2024-12-17 Marzieh Mirzaeibonehkhater , Mohammad Ali Labbaf-Khaniki , Mohammad Manthouri

Over recent years it has become well accepted that user interest is not static or immutable. There are a variety of contextual factors, such as time of day, the weather or the user's mood, that influence the current interests of the user.…

信息检索 · 计算机科学 2025-04-15 Joey De Pauw , Bart Goethals

In recent years, the rapid growth in technology has increased the opportunity for longitudinal human behavioral studies. Rich multimodal data, from wearables like Fitbit, online social networks, mobile phones etc. can be collected in…

机器学习 · 计算机科学 2019-05-23 Homa Hosseinmardi , Hsien-Te Kao , Kristina Lerman , Emilio Ferrara

The world is evolving and so is the vocabulary used to discuss topics in speech. Analysing political speech data from more than 30 years requires the use of flexible topic models to uncover the latent topics and their change in prevalence…

统计方法学 · 统计学 2025-09-15 Jan Vávra , Bettina Grün , Paul Hofmarcher

We treat collaborative filtering as a univariate time series estimation problem: given a user's previous votes, predict the next vote. We describe two families of methods for transforming data to encode time order in ways amenable to…

信息检索 · 计算机科学 2013-01-14 Andrew Zimdars , David Maxwell Chickering , Christopher Meek

Because tensor data appear more and more frequently in various scientific researches and real-world applications, analyzing the relationship between tensor features and the univariate outcome becomes an elementary task in many fields. To…

机器学习 · 计算机科学 2019-12-04 Jiaqi Zhang , Beilun Wang

In this work we propose a novel approach to utilize convolutional neural networks for time series forecasting. The time direction of the sequential data with spatial dimensions $D=1,2$ is considered democratically as the input of a…

机器学习 · 计算机科学 2020-01-13 Matthias Weissenbacher

Understanding temporal information and how the visual world changes over time is a fundamental ability of intelligent systems. In video understanding, temporal information is at the core of many current challenges, including compression,…

计算机视觉与模式识别 · 计算机科学 2019-10-31 Laura Sevilla-Lara , Shengxin Zha , Zhicheng Yan , Vedanuj Goswami , Matt Feiszli , Lorenzo Torresani

This paper introduces temporal-conditioned normalizing flows (tcNF), a novel framework that addresses anomaly detection in time series data with accurate modeling of temporal dependencies and uncertainty. By conditioning normalizing flows…

机器学习 · 计算机科学 2026-03-11 David Baumgartner , Helge Langseth , Kenth Engø-Monsen , Heri Ramampiaro

Tensor decomposition is a powerful computational tool for multiway data analysis. Many popular tensor decomposition approaches---such as the Tucker decomposition and CANDECOMP/PARAFAC (CP)---amount to multi-linear factorization. They are…

机器学习 · 计算机科学 2012-01-17 Zenglin Xu , Feng Yan , Yuan , Qi

Statistical methods relating tensor predictors to scalar outcomes in a regression model generally vectorize the tensor predictor and estimate the coefficients of its entries employing some form of regularization, use summaries of the tensor…

统计方法学 · 统计学 2021-07-29 Georgia Papadogeorgou , Zhengwu Zhang , David B. Dunson

Multivariate time series prediction has applications in a wide variety of domains and is considered to be a very challenging task, especially when the variables have correlations and exhibit complex temporal patterns, such as seasonality…

机器学习 · 计算机科学 2020-01-07 Yuya Jeremy Ong , Mu Qiao , Divyesh Jadav

Real-time analysis of graphs containing temporal information, such as social media streams, Q&A networks, and cyber data sources, plays an important role in various applications. Among them, detecting patterns is one of the fundamental…

数据库 · 计算机科学 2023-12-19 Seunghwan Min , Jihoon Jang , Kunsoo Park , Dora Giammarresi , Giuseppe F. Italiano , Wook-Shin Han

Incorporating item-side information, such as category and brand, into sequential recommendation is a well-established and effective approach for improving performance. However, despite significant advancements, current models are generally…

信息检索 · 计算机科学 2026-01-01 Jie Luo , Wenyu Zhang , Xinming Zhang , Yuan Fang

In order to model the evolution of user preference, we should learn user/item embeddings based on time-ordered item purchasing sequences, which is defined as Sequential Recommendation (SR) problem. Existing methods leverage sequential…

信息检索 · 计算机科学 2021-08-24 Ziwei Fan , Zhiwei Liu , Jiawei Zhang , Yun Xiong , Lei Zheng , Philip S. Yu

The paper develops a Transformer architecture for estimating dynamic factors from multivariate time series data under flexible identification assumptions. Performance on small datasets is improved substantially by using a conventional…

计量经济学 · 经济学 2026-01-21 Oliver Snellman

Accurate diagnosis of neurological disorders is contingent upon advanced imaging modalities such as Magnetic Resonance Imaging (MRI), which commonly utilize sparse imaging techniques to reconstruct images from limited data, thus reducing…

Time position embeddings capture the positional information of time steps, often serving as auxiliary inputs to enhance the predictive capabilities of time series models. However, existing models exhibit limitations in capturing intricate…

机器学习 · 计算机科学 2026-01-28 Xiaobao Song , Hao Wang , Liwei Deng , Yuxin He , Wenming Cao , Chi-Sing Leungc

The online analysis of multi-way data stored in a tensor $\mathcal{X} \in \mathbb{R} ^{I_1 \times \dots \times I_N} $ has become an essential tool for capturing the underlying structures and extracting the sensitive features which can be…

机器学习 · 计算机科学 2020-03-11 Ali Anaissi , Basem Suleiman , Seid Miad Zandavi

Topic discovery has witnessed a significant growth as a field of data mining at large. In particular, time-evolving topic discovery, where the evolution of a topic is taken into account has been instrumental in understanding the historical…

信息检索 · 计算机科学 2018-07-03 Sanaz Bahargam , Evangelos E. Papalexakis