Use of GA-ANN and GA-SVM for a QSPR study on aqueous solubility of pesticides

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Amel Bouakkadia
Noureddine Kertiou
Rana Amiri
Youssouf Driouche
Djelloul Messadi


The partitioning tendency of pesticides, in these study herbicides in particular, into different environmental compartments depends mainly of the physic-chemical properties of the pesticides itself. Aqueous solubility (S) indicates the tendency of a pesticide to be removed from soil by runoff or irrigation and to reach surface water. The experimental procedure determining aqueous solubility of pesticides is very expensive and difficult. QSPR methods are often used to estimate the aqueous solubility of herbicides. The artificial neural network (ANN) and support vector machine (SVM) methods, every time associated with genetic algorithm (GA) selection of the most important variable, were used to develop QSPR models to predict the aqueous solubility of a series 80 herbicides. The values of log S of the studied compounds were well correlated with de descriptors. Considering the pertinent descriptors, a Pearson Correlation Squared (R2) coefficient of 0.8 was obtained for the ANN model with a structure of 5-3-1 and 0.8 was obtained for the SVM model using the RBF function for the optimal parameters values: C = 11.12; σ = 0.1111 and ε = 0.222.

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A. Bouakkadia, N. Kertiou, R. Amiri, Y. Driouche, and D. Messadi, “Use of GA-ANN and GA-SVM for a QSPR study on aqueous solubility of pesticides”, J. Serb. Chem. Soc., Oct. 2020.
Theoretical Chemistry


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