An integrated machine learning, noise suppression, and population-based algorithm to improve total dissolved solids prediction
Research output: Contribution to journal › Research article › Contributed › peer-review
Contributors
Abstract
Monitoring the water contaminants is of utmost importance in water resource management. Prediction of the total dissolved solid (TDS) is particularly essential for water quality management and planning in the areas exposed to a mixture of pollutants. TDS primarily includes inorganic minerals and organic matters, and various salts and increasing the concentration of TDS causes the esthetic problems. The reflection of the pollutant burden of the aquatic system can remarkably determined by TDS magnitudes. This study focuses on the prediction of TDS and several biochemical parameters such as Na, Ca, HCO3, and Mg in a river system. To overcome nonstationarity, randomness, and nonlinearity of the TDS data, a multi-step supervised machine learning evolutionary algorithm (MSMLEA) is proposed to improve the model's performance at two gaging stations, namely Rig-Cheshmeh and Soleyman-Tangeh, in the Tajan River, Iran. In addition, a hybrid model that recruits intrinsic time-scale decomposition (ITD) for frequency resolution of the input data as well as a multivariate adaptive regression spline (MARS) were adopted. A novel metaheuristic optimization algorithm, crow search algorithm (CSA), was also implemented to compute the optimal parameter values for the MARS model. To validate the proposed hybrid model, standalone MARS, empirical mode decomposition (EMD)-based models, and hybrid ITD-MARS as well as a MARS-CSA were considered as the benchmark models. Results suggest the ITD-MARS-CSA outperforms other models.
Details
Original language | English |
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Pages (from-to) | 251-271 |
Number of pages | 21 |
Journal | Engineering applications of computational fluid mechanics |
Volume | 15 |
Issue number | 1 |
Publication status | Published - 2021 |
Peer-reviewed | Yes |
Keywords
ASJC Scopus subject areas
Keywords
- artificial intelligence, crow search algorithm, machine learning, multivariate adaptive regression splines, water pollution