The Integration of Nature-Inspired Algorithms with Least Square Support Vector Regression Models: Application to Modeling River Dissolved Oxygen Concentration

Yaseen, Zaher and Ehteram, Mohammad and Sharafati, Ahmad and Shahid, Shamsuddin and Al-Ansari, Nadhir and El-Shafie, Ahmed (2018) The Integration of Nature-Inspired Algorithms with Least Square Support Vector Regression Models: Application to Modeling River Dissolved Oxygen Concentration. Water, 10 (9). p. 1124. ISSN 2073-4441, DOI https://doi.org/10.3390/w10091124.

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Official URL: https://doi.org/10.3390/w10091124

Abstract

The current study investigates an improved version of Least Square Support Vector Machines integrated with a Bat Algorithm (LSSVM-BA) for modeling the dissolved oxygen (DO) concentration in rivers. The LSSVM-BA model results are compared with those obtained using M5 Tree and Multivariate Adaptive Regression Spline (MARS) models to show the efficacy of this novel integrated model. The river water quality data at three monitoring stations located in the USA are considered for the simulation of DO concentration. Eight input combinations of four water quality parameters, namely, water temperature, discharge, pH, and specific conductance, are used to simulate the DO concentration. The results revealed the superiority of the LSSVM-BA model over the M5 Tree and MARS models in the prediction of river DO. The accuracy of the LSSVM-BA model compared with those of the M5 Tree and MARS models is found to increase by 20% and 42%, respectively, in terms of the root-mean-square error. All the predictive models are found to perform best when all the four water quality variables are used as input, which indicates that it is possible to supply more information to the predictive model by way of incorporation of all the water quality variables.

Item Type: Article
Funders: UNSPECIFIED
Uncontrolled Keywords: dissolved oxygen concentration; LSSVM-BA model; water quality management
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 14 Feb 2019 04:10
Last Modified: 14 Feb 2019 04:10
URI: http://eprints.um.edu.my/id/eprint/20306

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