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Multi-objective constrained optimization for energy applications via tree ensembles

delete2022-01-01
delete16
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OA
AI
A
Alexander Thebelt
C
Calvin Tsay
R
Robert M. Lee
N
Nathan Sudermann‐Merx
D
D. Walz
T
Tranter, Tom
R
Ruth Misener *
DOI:10.1016/j.apenergy.2021.118061delete
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Abstract

Abstract

En 中文
Energy systems optimization problems are complex due to strongly non-linear system behavior and multiple competing objectives, e.g. economic gain vs. environmental impact. Moreover, a large number of input variables and different variable types, e.g. continuous and categorical, are challenges commonly present in real world applications. In some cases, proposed optimal solutions need to obey explicit input constraints related to physical properties or safety-critical operating conditions. This paper proposes a novel data-driven strategy using tree ensembles for constrained multi-objective optimization of black-box problems with heterogeneous variable spaces for which underlying system dynamics are either too complex to model or unknown. In an extensive case study comprised of synthetic benchmarks and relevant energy applications we demonstrate the competitive performance and sampling efficiency of the proposed algorithm compared to other state-of-the-art tools, making it a useful all-in-one solution for real-world applications with limited evaluation budgets.
Keywords:
Gradient boosted trees
Multi-objective optimization
Mixed-integer programming
Black-box optimization
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Applied Energy cover
Applied Energy
IF:
11
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2.6W
Citations:
17.8W

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U
University College London
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BASF
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university of london
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Imperial College London
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