Abstract
This work presents a hybrid approach based on seven methodologies combined with Principal Component Analysis (PCA) for UV-Vis absorbance time series forecasting. It was applied to four absorbance data sets in four different study sites. Thus, it is important to determine which forecasting methodology is best suited for different wavelengths, according to the target water quality. The Mean Absolute Percentage Error (MAPE) values were obtained in a range between 0% and 57% for all the study sites. Results shown that is not possible to have a best forecasting methodology among the proposed ones, because all of them would complement each other for different forecasting time steps and spectra range.
Original language | English |
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Title of host publication | 14th International Conference on Urban Drainage-ICUD 2017 |
Number of pages | 9 |
State | Published - 2017 |
Keywords
- Artificial Neural Networks
- Discrete Fourier Transform
- Polynomial transforms
- Principal Component Analysis
- UV-Vis time series forecasting
- Water Quality