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- W2024644429 abstract "Neural networks were used to predict the anomalies of the time series of monthly rainfall of the Northeastern Region of Brazil. The forecasts made using a feedforward network with backpropagation algorithm from the original data were not satisfactory. We have therefore tried to combine two advanced methods, Wavelet Transform and Neural networks. Three more types of neural networks were used. The selected neural networks include the Time Delay Neural Networks (TDNN), Radial Basis Functions network and Neural Network Adaptive Wavelet. All networks were implemented in neural network simulator SNNS. The Neural Network Adaptive Wavelet was implemented by changing the standard sigmoidal nonlinearities to wavelet nonlinearities in the neurons. We compare the results obtained with unfiltered and filtered data. Using data obtained by filtering the wavelet transform coefficients significantly improved the results for all networks. The combination of TDNN with wavelet filtered data gave the best results." @default.
- W2024644429 created "2016-06-24" @default.
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- W2024644429 date "1996-03-22" @default.
- W2024644429 modified "2023-09-27" @default.
- W2024644429 title "<title>Neural networks adaptive wavelets for predictions of the northeastern Brazil monthly rainfall anomalies time series</title>" @default.
- W2024644429 doi "https://doi.org/10.1117/12.235908" @default.
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