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A Rough Set Based Model in Water Quality Analysis

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Abstract

Due to pollution caused by the expansion of human activities and economic development, water quality has gradually deteriorated in many areas of the world. Therefore, analysis of water quality becomes one of the most essential issues of modern civilization. Integrated interdisciplinary modeling techniques, providing reliable, efficient, and accurate representation of the complex phenomenon of water quality, have gained attention in recent years. With the ability to deal with both numeric and nominal information, and express knowledge in a rule-based form, the Rough Set Theory (RST) has been successfully employed in many fields. However, the application of RST has not been widely investigated in water quality analysis. The reducts generated by RST models become very time-consuming as the size of the problem increases. Using multinomial logistics regression (MLR) techniques to provide reducts of RST models, this investigation develops a hybrid Multinomial Logistic Regression and Rough Set Theory (MLRRST) model to analyze relations between degrees of water pollution and environmental factors in Taiwan. Empirical results indicate that the MLRRST model could analyze water qualities efficiently and accurately, and yield decision rules for the staff of water quality management. Thus, the proposed model is a promising and helpful scheme in analyzing water quality.

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Authors and Affiliations

  1. Department of Information Management, National Chi Nan University, 1 University Road, Nantou, 545, Taiwan

    Ping-Feng Pai & Fong-Chuan Lee

  2. Department of International Business Studies, National Chi Nan University, 1 University Road, Nantou, 545, Taiwan

    Ping-Feng Pai

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  1. Ping-Feng Pai
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  2. Fong-Chuan Lee
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Correspondence to Ping-Feng Pai.

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Pai, PF., Lee, FC. A Rough Set Based Model in Water Quality Analysis. Water Resour Manage 24, 2405–2418 (2010). https://doi.org/10.1007/s11269-009-9558-3

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  • DOI: https://doi.org/10.1007/s11269-009-9558-3

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