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A reliable and efficient representation of multivariate time series is crucial in various downstream machine learning tasks. In multivariate time series forecasting, each variable depends on its historical values and there are…

机器学习 · 计算机科学 2022-08-22 William T. Ng , K. Siu , Albert C. Cheung , Michael K. Ng

Causal opacity denotes the difficulty in understanding the "hidden" causal structure underlying the decisions of deep neural network (DNN) models. This leads to the inability to rely on and verify state-of-the-art DNN-based systems,…

Most of previous machine learning algorithms are proposed based on the i.i.d. hypothesis. However, this ideal assumption is often violated in real applications, where selection bias may arise between training and testing process. Moreover,…

计算机视觉与模式识别 · 计算机科学 2018-08-24 Zheyan Shen , Peng Cui , Kun Kuang , Bo Li , Peixuan Chen

Identifying anomalies from time series data plays an important role in various fields such as infrastructure security, intelligent operation and maintenance, and space exploration. Current research focuses on detecting the anomalies after…

机器学习 · 计算机科学 2024-10-17 Sinong Zhao , Wenrui Wang , Hongzuo Xu , Zhaoyang Yu , Qingsong Wen , Gang Wang , xiaoguang Liu , Guansong Pang

Deep neural networks are known to be vulnerable to unseen data: they may wrongly assign high confidence stcores to out-distribuion samples. Recent works try to solve the problem using representation learning methods and specific metrics. In…

计算机视觉与模式识别 · 计算机科学 2022-06-07 Haowei He , Jiaye Teng , Yang Yuan

Anomaly detection on dynamic graphs refers to detecting entities whose behaviors obviously deviate from the norms observed within graphs and their temporal information. This field has drawn increasing attention due to its application in…

机器学习 · 计算机科学 2023-10-26 Shiqi Lou , Qingyue Zhang , Shujie Yang , Yuyang Tian , Zhaoxuan Tan , Minnan Luo

Time series anomaly prediction plays an essential role in many real-world scenarios, such as environmental prevention and prompt maintenance of cyber-physical systems. However, existing time series anomaly prediction methods mainly require…

机器学习 · 计算机科学 2025-12-05 Kai Zhao , Zhihao Zhuang , Chenjuan Guo , Hao Miao , Yunyao Cheng , Bin Yang

Anomaly Detection in multivariate time series is a major problem in many fields. Due to their nature, anomalies sparsely occur in real data, thus making the task of anomaly detection a challenging problem for classification algorithms to…

机器学习 · 计算机科学 2023-08-08 Anastasios Iliopoulos , John Violos , Christos Diou , Iraklis Varlamis

The recently proposed xLSTM is a powerful model that leverages expressive multiplicative gating and residual connections, providing the temporal capacity needed for long-horizon forecasting and representation learning. This architecture has…

机器学习 · 计算机科学 2026-03-03 Kamil Faber , Marcin Pietroń , Dominik Żurek , Roberto Corizzo

Cascade prediction aims at modeling information diffusion in the network. Most previous methods concentrate on mining either structural or sequential features from the network and the propagation path. Recent efforts devoted to combining…

机器学习 · 计算机科学 2021-12-08 Yansong Wang , Xiaomeng Wang , Tao Jia

Credit card fraud poses a significant threat to the economy. While Graph Neural Network (GNN)-based fraud detection methods perform well, they often overlook the causal effect of a node's local structure on predictions. This paper…

机器学习 · 计算机科学 2024-11-28 Yifan Duan , Guibin Zhang , Shilong Wang , Xiaojiang Peng , Wang Ziqi , Junyuan Mao , Hao Wu , Xinke Jiang , Kun Wang

Graph deep learning methods have become popular tools to process collections of correlated time series. Unlike traditional multivariate forecasting methods, graph-based predictors leverage pairwise relationships by conditioning forecasts on…

机器学习 · 计算机科学 2025-06-09 Andrea Cini , Ivan Marisca , Daniele Zambon , Cesare Alippi

Mobile network operators must monitor thousands of heterogeneous network elements across the radio access network and the packet core, each exposing high-dimensional KPI time series. The scale and cost of incident labelling make supervised…

机器学习 · 计算机科学 2026-05-04 Sara Malacarne , Eirik Hoel-Høiseth , Erlend Aune , David Zsolt Biró , Massimiliano Ruocco

Trajectory prediction facilitates effective planning and decision-making, while constrained trajectory prediction integrates regulation into prediction. Recent advances in constrained trajectory prediction focus on structured constraints by…

机器人学 · 计算机科学 2025-03-19 Hao Ma , Zhiqiang Pu , Shijie Wang , Boyin Liu , Huimu Wang , Yanyan Liang , Jianqiang Yi

The present study explores the intricacies of causal relationship extraction, a vital component in the pursuit of causality knowledge. Causality is frequently intertwined with temporal elements, as the progression from cause to effect is…

计算与语言 · 计算机科学 2023-04-24 Xiaosong Yuan , Ke Chen , Wanli Zuo , Yijia Zhang

Anomaly detection of multi-temporal modal data in Wireless Sensor Network (WSN) can provide an important guarantee for reliable network operation. Existing anomaly detection methods in multi-temporal modal data scenarios have the problems…

机器学习 · 计算机科学 2026-01-21 Miao Ye , Jing Cui , Yuan huang , Qian He , Yong Wang , Jiwen Zhang

Time-series anomaly detection (TSAD) is a critical component in monitoring complex systems, yet modern deep learning-based detectors are often highly sensitive to localized input corruptions and structured noise. We propose ARTA…

机器学习 · 计算机科学 2026-05-07 Hadi Hojjati , Narges Armanfard

Graph-based causal discovery methods aim to capture conditional independencies consistent with the observed data and differentiate causal relationships from indirect or induced ones. Successful construction of graphical models of data…

机器学习 · 统计学 2021-01-08 Boris Hayete , Fred Gruber , Anna Decker , Raymond Yan

Early and accurate detection of anomalies in time series data is critical, given the significant risks associated with false or missed detections. While MLP-based mixer models have shown promise in time series analysis, they lack a…

机器学习 · 计算机科学 2025-06-03 Md Mahmuddun Nabi Murad , Yasin Yilmaz

Semiconductor manufacturing is an extremely complex process, characterized by thousands of interdependent parameters collected across diverse tools and process steps. Multi-variate time-series (MTS) analysis has emerged as a critical…

机器学习 · 计算机科学 2025-07-04 Bappaditya Dey , Daniel Sorensen , Minjin Hwang , Sandip Halder