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BASWE: Balanced Accuracy-Based Sliding Window Ensemble for Classification in Imbalanced Data Streams with Concept Drift

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Author(s):
de Oliveira, Douglas Amorim ; Delgado, Karina Valdivia ; Lauretto, Marcelo de Souza
Total Authors: 3
Document type: Journal article
Source: INTELLIGENT SYSTEMS, BRACIS 2024, PT I; v. 15412, p. 16-pg., 2025-01-01.
Abstract

In the wake of the exponential growth in data generation witnessed in recent decades, the binary classification task within data streams presents inherent challenges due to their continuous, real-time flow and dynamic nature. This paper introduces the Balanced Accuracy-based SlidingWindow Ensemble (BASWE) algorithm that leverages Balanced Accuracy, sliding windows, and resampling techniques to effectively handle imbalanced classes and concept drifts, ensuring robust performance even as data patterns evolve. In experiments conducted on 40 datasets, comprising 16 real-world and 24 synthetic datasets generated under three configurations-no drift, gradual drift, and sudden drift-and with varying imbalance ratios, BASWE demonstrated superior performance compared to seven other state-of-the-art algorithms in terms of F1 Score and the Kappa statistic. (AU)

FAPESP's process: 13/07375-0 - CeMEAI - Center for Mathematical Sciences Applied to Industry
Grantee:Francisco Louzada Neto
Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC