Comparison of Tree-Based Ensemble Algorithms for Merging Satellite and Earth-Observed Precipitation Data at the Daily Time Scale
Abstract
:1. Introduction
2. Methods
2.1. Linear Regression
2.2. Random Forests
2.3. Gradient Boosting Machines
2.4. Extreme Gradient Boosting
3. Data and Application
3.1. Data
3.1.1. Earth-Observed Precipitation Data
3.1.2. Satellite Precipitation Data
3.1.3. Elevation Data
3.2. Validation Setting and Predictor Variables
3.3. Performance Metrics and Assessment
4. Results
4.1. Regression Setting Exploration
4.2. Algorithm Comparison
5. Discussion
6. Conclusions
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
Appendix A
References
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Predictor Variable | Predictor Set 1 | Predictor Set 2 | Predictor Set 3 |
---|---|---|---|
PERSIANN value 1 | ✔ | × | ✔ |
PERSIANN value 2 | ✔ | × | ✔ |
PERSIANN value 3 | ✔ | × | ✔ |
PERSIANN value 4 | ✔ | × | ✔ |
IMERG value 1 | × | ✔ | ✔ |
IMERG value 2 | × | ✔ | ✔ |
IMERG value 3 | × | ✔ | ✔ |
IMERG value 4 | × | ✔ | ✔ |
PERSIANN distance 1 | ✔ | × | ✔ |
PERSIANN distance 2 | ✔ | × | ✔ |
PERSIANN distance 3 | ✔ | × | ✔ |
PERSIANN distance 4 | ✔ | × | ✔ |
IMERG distance 1 | × | ✔ | ✔ |
IMERG distance 2 | × | ✔ | ✔ |
IMERG distance 3 | × | ✔ | ✔ |
IMERG distance 4 | × | ✔ | ✔ |
Station elevation | ✔ | ✔ | ✔ |
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Papacharalampous, G.; Tyralis, H.; Doulamis, A.; Doulamis, N. Comparison of Tree-Based Ensemble Algorithms for Merging Satellite and Earth-Observed Precipitation Data at the Daily Time Scale. Hydrology 2023, 10, 50. https://doi.org/10.3390/hydrology10020050
Papacharalampous G, Tyralis H, Doulamis A, Doulamis N. Comparison of Tree-Based Ensemble Algorithms for Merging Satellite and Earth-Observed Precipitation Data at the Daily Time Scale. Hydrology. 2023; 10(2):50. https://doi.org/10.3390/hydrology10020050
Chicago/Turabian StylePapacharalampous, Georgia, Hristos Tyralis, Anastasios Doulamis, and Nikolaos Doulamis. 2023. "Comparison of Tree-Based Ensemble Algorithms for Merging Satellite and Earth-Observed Precipitation Data at the Daily Time Scale" Hydrology 10, no. 2: 50. https://doi.org/10.3390/hydrology10020050