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Data Repository for 'Bootstrap aggregation and cross-validation methods to reduce overfitting in reservoir policy search'


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Created: Jan 20, 2020 at 7:42 p.m.
Last updated: Jan 20, 2020 at 8:52 p.m.
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Abstract

Policy search methods provide a heuristic mapping between observations and decisions and have been widely used in reservoir control studies. However, recent studies have observed a tendency for policy search methods to overfit to the hydrologic data used in training, particularly the sequence of flood and drought events. This technical note develops an extension of bootstrap aggregation (bagging) and cross-validation techniques, inspired by the machine learning literature, to improve control policy performance on out-of-sample hydrology. We explore these methods using a case study of Folsom Reservoir, California using control policies structured as binary trees and daily streamflow resampling based on the paleo-inflow record. Results show that calibration-validation strategies for policy selection and certain ensemble aggregation methods can improve out-of-sample tradeoffs between water supply and flood risk objectives over baseline performance given fixed computational costs. These results highlight the potential to improve policy search methodologies by leveraging well-established model training strategies from machine learning.

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The content of this resource serves as the data for: Brodeur, Z., Herman, J. D., & Steinschneider, S. S. (2020). Bootstrap aggregation and cross-validation methods to reduce overfitting in reservoir policy search. Submitted to Water Resources Research for review, 01/20/2020

How to Cite

Brodeur, Z. P., S. S. Steinschneider, J. D. Herman (2020). Data Repository for 'Bootstrap aggregation and cross-validation methods to reduce overfitting in reservoir policy search', HydroShare, http://www.hydroshare.org/resource/b8f87a7b680d44cebfb4b3f4f4a6a447

This resource is shared under the Creative Commons Attribution CC BY.

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