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Real-world applications have been dealing with large amounts of data that arrive over time and generally present changes in their underlying joint probability distribution, i.e., concept drift. Concept drift can be subdivided into two…

Machine Learning · Computer Science 2021-02-12 Gustavo Oliveira , Leandro Minku , Adriano Oliveira

Concept drift refers to changes in the distribution of underlying data and is an inherent property of evolving data streams. Ensemble learning, with dynamic classifiers, has proved to be an efficient method of handling concept drift.…

Machine Learning · Computer Science 2020-04-14 Anjin Liu , Jie Lu , Guangquan Zhang

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…

Machine Learning · Computer Science 2020-08-11 Anjin Liu , Jie Lu , Guangquan Zhang

ML-enabled systems that are deployed in a production environment typically suffer from decaying model prediction quality through concept drift, i.e., a gradual change in the statistical characteristics of a certain real-world domain. To…

Machine Learning · Computer Science 2025-08-05 Rafiullah Omar , Justus Bogner , Joran Leest , Vincenzo Stoico , Patricia Lago , Henry Muccini

Online updating of time series forecasting models aims to tackle the challenge of concept drifting by adjusting forecasting models based on streaming data. While numerous algorithms have been developed, most of them focus on model design…

Machine Learning · Computer Science 2024-03-25 YiFan Zhang , Weiqi Chen , Zhaoyang Zhu , Dalin Qin , Liang Sun , Xue Wang , Qingsong Wen , Zhang Zhang , Liang Wang , Rong Jin

Data in the real world often has an evolving distribution. Thus, machine learning models trained on such data get outdated over time. This phenomenon is called model drift. Knowledge of this drift serves two purposes: (i) Retain an accurate…

Machine Learning · Computer Science 2025-03-11 Pranoy Panda , Kancheti Sai Srinivas , Vineeth N Balasubramanian , Gaurav Sinha

Machine learning (ML) algorithms deployed in real-world environments are often faced with the challenge of adapting models to concept drift, where the task data distributions are shifting over time. The problem becomes even more difficult…

Machine Learning · Computer Science 2026-01-19 Adam Piaseczny , Md Kamran Chowdhury Shisher , Shiqiang Wang , Christopher G. Brinton

Time series forecasting always faces the challenge of concept drift, where data distributions evolve over time, leading to a decline in forecast model performance. Existing solutions are based on online learning, which continually organize…

Machine Learning · Computer Science 2025-12-19 Lifan Zhao , Yanyan Shen

Forecasting models that are trained across sets of many time series, known as Global Forecasting Models (GFM), have shown recently promising results in forecasting competitions and real-world applications, outperforming many…

Machine Learning · Computer Science 2020-08-07 Kasun Bandara , Hansika Hewamalage , Yuan-Hao Liu , Yanfei Kang , Christoph Bergmeir

A fundamental issue for statistical classification models in a streaming environment is that the joint distribution between predictor and response variables changes over time (a phenomenon also known as concept drifts), such that their…

Machine Learning · Statistics 2019-02-11 Shujian Yu , Zubin Abraham , Heng Wang , Mohak Shah , Yantao Wei , José C. Príncipe

Machine learning (ML) represents an efficient and popular approach for network traffic classification. However, network traffic classification is a challenging domain, and trained models may degrade soon after deployment due to the obsolete…

Machine Learning · Computer Science 2026-01-01 Dominik Soukup , Richard Plný , Daniel Vašata , Tomáš Čejka

Detecting drifts in data is essential for machine learning applications, as changes in the statistics of processed data typically has a profound influence on the performance of trained models. Most of the available drift detection methods…

Machine Learning · Computer Science 2024-10-28 Andrea Castellani , Sebastian Schmitt , Barbara Hammer

AI-native 6G networks promise unprecedented automation and performance by embedding machine-learning models throughout the radio access and core segments of the network. However, the non-stationary nature of wireless environments due to…

Networking and Internet Architecture · Computer Science 2025-08-04 Athanasios Tziouvaras , Carolina Fortuna , George Floros , Kostas Kolomvatsos , Panagiotis Sarigiannidis , Marko Grobelnik , Blaž Bertalanič

Anomaly detection in multimedia datasets is a widely studied area. Yet, the concept drift challenge in data has been ignored or poorly handled by the majority of the anomaly detection frameworks. The state-of-the-art approaches assume that…

Computer Vision and Pattern Recognition · Computer Science 2022-07-28 Pratibha Kumari , Priyankar Choudhary , Pradeep K. Atrey , Mukesh Saini

Practical machine learning applications involving time series data, such as firewall log analysis to proactively detect anomalous behavior, are concerned with real time analysis of streaming data. Consequently, we need to update the ML…

This paper deals with the issue of concept drift in supervised machine learn-ing. We make use of graphical models to elicit the visible structure of the dataand we infer from there changes in the hidden context. Differently from previous…

Machine Learning · Computer Science 2021-02-03 Luigi Riso , Marco Guerzoni

Most machine learning models are static, but the world is dynamic, and increasing online deployment of learned models gives increasing urgency to the development of efficient and effective mechanisms to address learning in the context of…

Machine Learning · Computer Science 2016-11-16 Geoffrey I. Webb , Roy Hyde , Hong Cao , Hai Long Nguyen , Francois Petitjean

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…

Machine Learning · Computer Science 2020-02-12 Subhro Das , Prasanth Lade , Soundar Srinivasan

Common statistical prediction models often require and assume stationarity in the data. However, in many practical applications, changes in the relationship of the response and predictor variables are regularly observed over time, resulting…

Machine Learning · Statistics 2015-05-05 Heng Wang , Zubin Abraham

A failure detection system is the first step towards predictive maintenance strategies. A popular data-driven method to detect incipient failures and anomalies is the training of normal behaviour models by applying a machine learning…

Machine Learning · Computer Science 2021-06-21 Iñigo Martinez , Elisabeth Viles , Iñaki Cabrejas