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In data streams, the data distribution of arriving observations at different time points may change - a phenomenon called concept drift. While detecting concept drift is a relatively mature area of study, solutions to the uncertainty…

机器学习 · 计算机科学 2020-08-11 Anjin Liu , Jie Lu , Guangquan Zhang

Multi-modal Large Language Models (MLLMs) frequently face challenges from concept drift when dealing with real-world streaming data, wherein distributions change unpredictably. This mainly includes gradual drift due to long-tailed data and…

计算机视觉与模式识别 · 计算机科学 2025-02-18 Xiaoyu Yang , Jie Lu , En Yu

Uncertain changes in data streams present challenges for machine learning models to dynamically adapt and uphold performance in real-time. Particularly, classification boundary change, also known as real concept drift, is the major cause of…

机器学习 · 计算机科学 2024-05-24 Feng Gu , Jie Lu , Zhen Fang , Kun Wang , Guangquan Zhang

Most predictive models assume that training and test data are generated from a stationary process. However, this assumption does not hold true in practice. In this paper, we consider the scenario of a gradual concept drift due to the…

机器学习 · 计算机科学 2020-02-12 Subhro Das , Prasanth Lade , Soundar Srinivasan

In the midst of the rapid integration of artificial intelligence (AI) into real world applications, one pressing challenge we confront is the phenomenon of model drift, wherein the performance of AI models gradually degrades over time,…

计算机视觉与模式识别 · 计算机科学 2024-02-13 Samiha Mirza , Vuong D. Nguyen , Pranav Mantini , Shishir K. Shah

The change in data distribution over time, also known as concept drift, poses a significant challenge to the reliability of online learning methods. Existing methods typically require model retraining or drift detection, both of which…

机器学习 · 计算机科学 2025-06-11 Songqiao Hu , Zeyi Liu , Xiao He

Complex systems such as aircraft engines, turbines, and industrial machinery often operate under dynamically changing conditions. These varying operating conditions can substantially influence degradation behavior and make prognostic…

机器学习 · 计算机科学 2026-04-14 Yuqi Su , Xiaolei Fang

Accurate forecasts of photovoltaic power generation (PVPG) are essential to optimize operations between energy supply and demand. Recently, the propagation of sensors and smart meters has produced an enormous volume of data, which supports…

机器学习 · 计算机科学 2022-06-14 Xing Luo , Dongxiao Zhang

Reliable and cost-effective maintenance is essential for railway safety, particularly at the wheel-rail interface, which is prone to wear and failure. Predictive maintenance frameworks increasingly leverage sensor-generated time-series…

机器学习 · 计算机科学 2026-02-19 Afonso Lourenço , Francisca Osório , Diogo Risca , Goreti Marreiros

Detecting drift in performance of Machine Learning (ML) models is an acknowledged challenge. For ML models to become an integral part of business applications it is essential to detect when an ML model drifts away from acceptable operation.…

机器学习 · 计算机科学 2021-08-12 Samuel Ackerman , Parijat Dube , Eitan Farchi , Orna Raz , Marcel Zalmanovici

Active learning (AL) aims to select the most useful data samples from an unlabeled data pool and annotate them to expand the labeled dataset under a limited budget. Especially, uncertainty-based methods choose the most uncertain samples,…

机器学习 · 计算机科学 2023-10-02 Seong Min Kye , Kwanghee Choi , Hyeongmin Byun , Buru Chang

In today's connected world, the generation of massive streaming data across diverse domains has become commonplace. In the presence of concept drift, class imbalance, label scarcity, and new class emergence, they jointly degrade…

机器学习 · 计算机科学 2026-02-11 Jin Li , Kleanthis Malialis , Marios Polycarpou

Recently many multi-label image recognition (MLR) works have made significant progress by introducing pre-trained object detection models to generate lots of proposals or utilizing statistical label co-occurrence enhance the correlation…

计算机视觉与模式识别 · 计算机科学 2023-01-10 Tao Pu , Mingzhan Sun , Hefeng Wu , Tianshui Chen , Ling Tian , Liang Lin

We study the problem of learning a mixture of multiple linear dynamical systems (LDSs) from unlabeled short sample trajectories, each generated by one of the LDS models. Despite the wide applicability of mixture models for time-series data,…

机器学习 · 统计学 2022-05-26 Yanxi Chen , H. Vincent Poor

Modulation recognition is a fundamental task in communication systems as the accurate identification of modulation schemes is essential for reliable signal processing, interference mitigation for coexistent communication technologies, and…

信号处理 · 电气工程与系统科学 2023-12-11 Ali Owfi , Ali Abbasi , Fatemeh Afghah , Jonathan Ashdown , Kurt Turck

Discrete diffusion language models (DDLMs) generate text by iteratively denoising categorical token sequences, while recent drifting methods for continuous generators suggest that part of this sampling-time correction can instead be…

计算与语言 · 计算机科学 2026-05-20 Daisuke Oba , Hiroki Furuta , Naoaki Okazaki

As next-generation networks materialize, increasing levels of intelligence are required. Federated Learning has been identified as a key enabling technology of intelligent and distributed networks; however, it is prone to concept drift as…

机器学习 · 计算机科学 2022-02-07 Dimitrios Michael Manias , Ibrahim Shaer , Li Yang , Abdallah Shami

Deep learning (DL) has achieved great success in many applications, but it has been less well analyzed from the theoretical perspective. The unexplainable success of black-box DL models has raised questions among scientists and promoted the…

机器人学 · 计算机科学 2023-08-25 Huu-Thiet Nguyen , Chien Chern Cheah , Kar-Ann Toh

Effective network state classification is a primary task for ensuring network security and optimizing performance. Existing deep learning models have shown considerable progress in this area. Some methods excel at analyzing the complex…

机器学习 · 计算机科学 2025-09-16 Yuan Gao , Xuelong Wang , Zhenguo Dong , Yong Zhang

In our digital universe nowadays, enormous amount of data are produced in a streaming manner in a variety of application areas. These data are often unlabelled. In this case, identifying infrequent events, such as anomalies, poses a great…

机器学习 · 计算机科学 2023-09-07 Jin Li , Kleanthis Malialis , Marios M. Polycarpou