Bayesian mesh optimization for graph neural networks to enhance engineering performance prediction공학적 성능 예측 향상을 위한 그래프 신경망용 베이지안 메쉬 최적화

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dc.contributor.advisor강남우-
dc.contributor.authorPark, Jangseop-
dc.contributor.author박장섭-
dc.date.accessioned2024-07-25T19:30:29Z-
dc.date.available2024-07-25T19:30:29Z-
dc.date.issued2023-
dc.identifier.urihttp://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=1045000&flag=dissertationen_US
dc.identifier.urihttp://hdl.handle.net/10203/320455-
dc.description학위논문(석사) - 한국과학기술원 : 조천식모빌리티대학원, 2023.2,[iii, 39 p. :]-
dc.description.abstractIn engineering design, surrogate models for 3D computer-aided designs (CADs) have been widely used to replace computationally expensive simulations with running. However, the conventional surrogate modeling process, which relies on geometric parameters (or design variables) of CAD, has limitations when dealing with complex structural shapes commonly found in industry datasets. These limitations include information loss in low dimensions and difficulty in parameterization. This study proposes a Bayesian graph neural networks (GNN) framework for a 3D deep learning-based surrogate model that predicts engineering performances by directly learning the geometric features of CAD with mesh representation. Our proposed framework derives the optimal size of mesh elements making a high-accuracy surrogate model with Bayesian optimization. It also solves the heterogeneity problem of 3D CAD data in that 2D images have regular pixel structures while 3D CADs have irregular structures. As the results of experiments, the mesh qualities have high correlations with the prediction accuracy of the surrogate model, and there exists an optimal mesh size that satisfies the high performance of the surrogate model. We expect our proposed framework to be generally applied to mesh-based simulations in various engineering fields, reflecting physics information widely used in computer-aided engineering (CAE).-
dc.languageeng-
dc.publisher한국과학기술원-
dc.subject3D 딥러닝▼a메쉬▼a대리모델▼a그래프 신경망▼a베이지안 최적화-
dc.subject3D deep learning▼amesh▼asurrogate model▼agraph neural network (GNN)▼aBayesian optimization-
dc.titleBayesian mesh optimization for graph neural networks to enhance engineering performance prediction-
dc.title.alternative공학적 성능 예측 향상을 위한 그래프 신경망용 베이지안 메쉬 최적화-
dc.typeThesis(Master)-
dc.identifier.CNRN325007-
dc.description.department한국과학기술원 :조천식모빌리티대학원,-
dc.contributor.alternativeauthorKang, Namwoo-
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