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Real-world time series often exhibit complex interdependencies that cannot be captured in isolation. Global models that model past data from multiple related time series globally while producing series-specific forecasts locally are now…

Machine Learning · Computer Science 2024-05-14 Abishek Sriramulu , Christoph Bergmeir , Slawek Smyl

Ensemble learning is a mainstay in modern data science practice. Conventional ensemble algorithms assigns to base models a set of deterministic, constant model weights that (1) do not fully account for variations in base model accuracy…

Machine Learning · Computer Science 2018-12-20 Jeremiah Zhe Liu , John Paisley , Marianthi-Anna Kioumourtzoglou , Brent A. Coull

Data augmentation is a key element of deep learning pipelines, as it informs the network during training about transformations of the input data that keep the label unchanged. Manually finding adequate augmentation methods and parameters…

Machine Learning · Computer Science 2022-02-09 Cédric Rommel , Thomas Moreau , Joseph Paillard , Alexandre Gramfort

Detecting anomalies in real-world multivariate time series data is challenging due to complex temporal dependencies and inter-variable correlations. Recently, reconstruction-based deep models have been widely used to solve the problem.…

Machine Learning · Computer Science 2023-12-06 Junho Song , Keonwoo Kim , Jeonglyul Oh , Sungzoon Cho

With the rapid development of deep learning, automatic modulation recognition (AMR), as an important task in cognitive radio, has gradually transformed from traditional feature extraction and classification to automatic classification by…

Signal Processing · Electrical Eng. & Systems 2024-10-30 Xinjie Xu , Zhuangzhi Chen , Dongwei Xu , Huaji Zhou , Shanqing Yu , Shilian Zheng , Qi Xuan , Xiaoniu Yang

In model-based reinforcement learning, generative and temporal models of environments can be leveraged to boost agent performance, either by tuning the agent's representations during training or via use as part of an explicit planning…

This work investigates the problem of learning temporal interaction networks. A temporal interaction network consists of a series of chronological interactions between users and items. Previous methods tackle this problem by using different…

Social and Information Networks · Computer Science 2021-07-09 Jiangxia Cao , Xixun Lin , Xin Cong , Shu Guo , Hengzhu Tang , Tingwen Liu , Bin Wang

Due to the huge progress of the recording devices, data from heterogeneous nature can be recorded, such as spatial, temporal and spatio-temporal. Nowadays, time-based data is of particular interest since it has the ability to capture the…

Audio and Speech Processing · Electrical Eng. & Systems 2018-12-06 Imad Rida

The event camera is a novel bio-inspired vision sensor. When the brightness change exceeds the preset threshold, the sensor generates events asynchronously. The number of valid events directly affects the performance of event-based tasks,…

Computer Vision and Pattern Recognition · Computer Science 2022-08-24 Xijie Xiang , Lin Zhu , Jianing Li , Yonghong Tian , Tiejun Huang

Augmenting training datasets has been shown to improve the learning effectiveness for several computer vision tasks. A good augmentation produces an augmented dataset that adds variability while retaining the statistical properties of the…

Computer Vision and Pattern Recognition · Computer Science 2020-04-01 Tom Ching LingChen , Ava Khonsari , Amirreza Lashkari , Mina Rafi Nazari , Jaspreet Singh Sambee , Mario A. Nascimento

Video-language pre-trained models have shown remarkable success in guiding video question-answering (VideoQA) tasks. However, due to the length of video sequences, training large-scale video-based models incurs considerably higher costs…

Computer Vision and Pattern Recognition · Computer Science 2023-08-17 Guangyi Chen , Xiao Liu , Guangrun Wang , Kun Zhang , Philip H. S. Torr , Xiao-Ping Zhang , Yansong Tang

Seismic data often contain gaps due to various obstacles in the investigated area and recording instrument failures. Deep learning techniques offer promising solutions for reconstructing missing data parts by leveraging existing…

Geophysics · Physics 2024-04-04 Mohammad Mahdi Abedi , David Pardo , Tariq Alkhalifah

Multi-dimensional time series data, such as matrix and tensor-variate time series, are increasingly prevalent in fields such as economics, finance, and climate science. Traditional Transformer models, though adept with sequential data, do…

Machine Learning · Computer Science 2024-10-29 Linghang Kong , Elynn Chen , Yuzhou Chen , Yuefeng Han

This paper examines the effectiveness of combining active learning and transfer learning for anomaly detection in cross-domain time-series data. Our results indicate that there is an interaction between clustering and active learning and in…

Machine Learning · Computer Science 2025-08-07 John D. Kelleher , Matthew Nicholson , Rahul Agrahari , Clare Conran

Despite increasing popularity in empirical studies, the integration of machine learning generated variables into regression models for statistical inference suffers from the measurement error problem, which can bias estimation and threaten…

Econometrics · Economics 2024-12-23 Gordon Burtch , Edward McFowland , Mochen Yang , Gediminas Adomavicius

Electroencephalogram (EEG) classification has been widely used in various medical and engineering applications, where it is important for understanding brain function, diagnosing diseases, and assessing mental health conditions. However,…

Signal Processing · Electrical Eng. & Systems 2024-08-20 Mingzhi Chen , Yiyu Gui , Yuqi Su , Yuesheng Zhu , Guibo Luo , Yuchao Yang

This paper presents a novel approach that leverages Transformer-based multivariate time series model and Machine Learning Ensembles to predict the quality of human sleep, emotional states, and stress levels. A formula to calculate the…

Machine Learning · Computer Science 2024-10-16 Jinjae Kim , Minjeong Ma , Eunjee Choi , Keunhee Cho , Chanwoo Lee

Audio processors whose parameters are modified periodically over time are often referred as time-varying or modulation based audio effects. Most existing methods for modeling these type of effect units are often optimized to a very specific…

Audio and Speech Processing · Electrical Eng. & Systems 2019-06-24 Marco A. Martínez Ramírez , Emmanouil Benetos , Joshua D. Reiss

This paper explores the potential for performing temporal semantic segmentation in the context of agricultural robotics without temporally labelled data. We achieve this by proposing to generate virtual temporal samples from labelled still…

Computer Vision and Pattern Recognition · Computer Science 2021-09-07 Alireza Ahmadi , Michael Halstead , Chris McCool

Large Language Models (LLMs) excel at capturing latent semantics and contextual relationships across diverse modalities. However, in modeling user behavior from sequential interaction data, performance often suffers when such semantic…

Computation and Language · Computer Science 2025-10-22 Mahsa Valizadeh , Xiangjue Dong , Rui Tuo , James Caverlee