Meteorological Drought Analysis Using Particle Swarm Optimization Algorithm- Artificial Neural Networks Based on MSPI Index

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Article Type:
Research/Original Article (دارای رتبه معتبر)
Abstract:
The drought phenomenon is one of the natural disasters, which may occur in all climatic zones and cause serious damages to the environment and human life. So, forecasting this phenomenon may have significant impact on the water resources management and reduce its destructive effects as much as possible. In this study, the multivariate standardized precipitation index (MSPI) was utilized to compute the drought characteristics in the Lighvanchai basin and then the artificial neural network (ANN) was used to forecast the MSPI values. In order to train the ANN and estimate its optimized weights, the particle swarm optimization (PSO) algorithm was applied and its performance was compared with the backpropagation (BP) algorithm. In this context, different scenarios and structures were considered and then the goodness-of-fit tests were utilized for evaluating the accuracy of them. The results demonstrated that the ANN-PSO model had a better performance than the ANN-BP model for drought forecasting.
Language:
Persian
Published:
Journal of Soil and water knowledge, Volume:28 Issue: 2, 2018
Pages:
107 to 120
https://www.magiran.com/p1889933