Abstract
The behavior of schools of zebrafish (Danio rerio) was studied in acute toxicity environments. Behavioral features were extracted and a method for water quality assessment using support vector machine (SVM) was developed. The behavioral parameters of fish were recorded and analyzed during one hour in an environment of a 24-h half-lethal concentration (LC50) of a pollutant. The data were used to develop a method to evaluate water quality, so as to give an early indication of toxicity. Four kinds of metal ions (Cu2+, Hg2+, Cr6+, and Cd2+) were used for toxicity testing. To enhance the efficiency and accuracy of assessment, a method combining SVM and a genetic algorithm (GA) was used. The results showed that the average prediction accuracy of the method was over 80% and the time cost was acceptable. The method gave satisfactory results for a variety of metal pollutants, demonstrating that this is an effective approach to the classification of water quality.
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Project supported by the Natural Science Foundation of Ningbo City (No. 2010A610005) and the Key Science and Technology Program of Zhejiang Province (No. 2011C11049), China
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Liao, Y., Xu, Jy. & Wang, Zw. Application of biomonitoring and support vector machine in water quality assessment. J. Zhejiang Univ. Sci. B 13, 327–334 (2012). https://doi.org/10.1631/jzus.B1100031
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DOI: https://doi.org/10.1631/jzus.B1100031
Key words
- Water assessment
- Behavioral feature parameter
- Support vector machine (SVM)
- Genetic algorithm (GA)
- Water quality classification