A Structurally Simplified Hybrid Model of Genetic Algorithm and Support Vector Machine for Prediction of Chlorophyll a in Reservoirs
Open Access
- 16 April 2015
- Vol. 7 (4), 1610-1627
- https://doi.org/10.3390/w7041610
Abstract
With decreasing water availability as a result of climate change and human activities, analysis of the influential factors and variation trends of chlorophyll a has become important to prevent reservoir eutrophication and ensure water supply safety. In this paper, a structurally simplified hybrid model of the genetic algorithm (GA) and the support vector machine (SVM) was developed for the prediction of monthly concentration of chlorophyll a in the Miyun Reservoir of northern China over the period from 2000 to 2010. Based on the influence factor analysis, the four most relevant influence factors of chlorophyll a (i.e., total phosphorus, total nitrogen, permanganate index, and reservoir storage) were extracted using the method of feature selection with the GA, which simplified the model structure, making it more practical and efficient for environmental management. The results showed that the developed simplified GA-SVM model could solve nonlinear problems of complex system, and was suitable for the simulation and prediction of chlorophyll a with better performance in accuracy and efficiency in the Miyun Reservoir.This publication has 27 references indexed in Scilit:
- Twenty‐One‐Year Simulation of Chesapeake Bay Water Quality Using the CE‐QUAL‐ICM Eutrophication ModelJawra Journal of the American Water Resources Association, 2013
- Chaos-enhanced accelerated particle swarm optimizationCommunications in Nonlinear Science and Numerical Simulation, 2013
- Sustainable Water SystemsWater, 2013
- Spatial and temporal variations in algal blooms in the coastal waters of the western South China SeaJournal of Hydro-environment Research, 2012
- Assessment of input variables determination on the SVM model performance using PCA, Gamma test, and forward selection techniques for monthly stream flow predictionJournal of Hydrology, 2011
- LIBSVMACM Transactions on Intelligent Systems and Technology, 2011
- Spatio-temporal ecological modelsEcological Informatics, 2011
- Comparison of two different data-driven techniques in modeling lake level fluctuations in TurkeyJournal of Hydrology, 2009
- Support-vector networksMachine Learning, 1995
- PREDICTION OF CHLOROPHYLL A CONCENTRATIONS IN FLORIDA LAKES: THE IMPORTANCE OF PHOSPHORUS AND NITROGEN1Jawra Journal of the American Water Resources Association, 1983