(An) efficient method for the selection of local surrogates국소적 대리모델 선택을 위한 효율적 방법론

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In engineering, physical systems are typically described by known functions, but such functions aren’t always available in all contexts. Unknown functions that link inputs to outputs are referred to as ”black box functions”, and are obtained from expensive experiments or simulations. The development of surrogate models becomes relevant in scenarios where balancing accuracy and efficiency is crucial. These metamodels enable rapid analysis at the tradeoff of a slight, but hopefully acceptable, reduction in accuracy. This thesis aims to develop an efficient method for selecting multiple local surrogate models. It addresses the challenges and limitations inherent in existing methodologies and proposes a novel approach to enhance accuracy and efficiency in surrogate model selection. The research employs a combination of artificial neural networks and Kriging techniques. The methodology and algorithms for selecting and optimising local surrogate models are introduced, considering factors like computational cost, accuracy, and model complexity. The proposed methodology is tested through the engineering application focusing on the design methodology of urban transit vehicles. The developed method offers a more efficient and accurate approach to selecting local surrogate models, with potential implications for a wide range of engineering applications.
Advisors
이익진researcher
Description
한국과학기술원 :기계공학과,
Publisher
한국과학기술원
Issue Date
2024
Identifier
325007
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 기계공학과, 2024.2,[iv, 64 p. :]

Keywords

컴퓨터 시뮬레이션▼a서로게이트 모델링▼a인공 신경망▼a크리깅▼a컴퓨터 효율성; Computer simulations▼aSurrogate modeling▼aArtificial neural networks▼aKriging▼aComputational efficiency

URI
http://hdl.handle.net/10203/321290
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=1095878&flag=dissertation
Appears in Collection
ME-Theses_Master(석사논문)
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