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COMPARISON OF THE HYDROLOGIC AND DATA DRIVEN RIVER FLOW GENERATORS
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M. Cisty;V. Soldanova
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1314-2704
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English
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17
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33
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This work discusses the creation of a river flow generator, which uses as an inputs temperature and precipitation data. These input data could be an artificial series of mentioned climatic variables (especially in context of climate change studies), but when assessing the present-day state, measured data may be used too. For this purpose hydrological model and machine learning model is used. In order to increase the accuracy of the flow generation, the authors have designed and tested various variants of data driven models, which are described in the paper. As is demonstrated in the case study, better modelling results are more affected by hydrology-inspired feature engineering then by searching for better data driven method. Proposed approach allows for a significant increase in the accuracy of the flow generation in comparison to hydrological and machine learning models in their standard application and using standard inputs. The proposed model is compared with the hydrological model and other variants of machine learning models. Comparison is made on stream flows in Slovakia.
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conference
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17th International Multidisciplinary Scientific GeoConference SGEM 2017
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17th International Multidisciplinary Scientific GeoConference SGEM 2017,
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Proceedings Paper
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STEF92 Technology
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International Multidisciplinary Scientific GeoConference-SGEM
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Bulgarian Acad Sci; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Russian Acad Sci; Serbian Acad Sci & Arts; Slovak Acad Sci; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; World Acad Sci; European Acad Sci, Arts & Letters; Ac
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111-118
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website
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cdrom
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3534
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streamflow forecasting; hydrologic model; data driven modelling; gradient boosting machines
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