Abstract:
Short-term surface flood modelling requires reliable estimation of the distribution of
floods over urban catchments with sufficient lead time in order to provide timely
warnings. In this paper new improvements to the traditional Support Vector Machine
(SVM) prediction technique for rainfall prediction are presented. The results obtained
using the new improvements, such as enhancement of SVM prediction using
Singular Spectrum Analysis (SSA) for pre-processing the data and combined SSA
and SVM with a statistical analysis that give stochastic results to AI-based prediction,
are compared with the results obtained using the SVM technique only. When
applying the SVM technique to the rainfall data used in this study, the results showed
an underestimation of the rainfall peaks. When using SSA for preprocessing the
rainfall data the results are significantly better. The new stochastic approach proved
to be useful for estimating the level of confidence of the forecast.
