Prediction of hydrological and water quality data based on granular-ball rough set and k-nearest neighbor analysis

Hydrological and water quality datasets usually encompass a large number of characteristic variables, but not all of these significantly influence analytical outcomes. Therefore, by wisely selecting feature variables with rich information content and removing redundant features, it not only can the...

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Bibliographic Details
Published in:PloS one 2024-02, Vol.19 (2), p.e0298664-e0298664
Main Authors: Dong, Limei, Zuo, Xinyu, Xiong, Yiping
Format: Article
Language:English
Subjects:
Analysis
Evaluation
Fresh water
Properties
Water bloom
Water quality
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Summary:Hydrological and water quality datasets usually encompass a large number of characteristic variables, but not all of these significantly influence analytical outcomes. Therefore, by wisely selecting feature variables with rich information content and removing redundant features, it not only can the analysis efficiency be improved, but the model complexity can also be simplified. This paper considers introducing the granular-ball rough set algorithm for feature variable selection and combining it with the k-nearest neighbor method and back propagation network to analyze hydrological and water quality data, thus promoting overall and fused inspection. The results of hydrological water quality data analysis show that the proposed method produces better results compared to using a standalone k-nearest neighbor regressor.
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0298664