Using computer experiments to construct a cheap substitute for an expensive simulation model

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There is widespread use of computer models as tools in scientific research. As surrogates for physical or behavioral systems, such models can be subjected to experimentation, the goal being to predict how the corresponding real system would behave under certain conditions. For long-running (expensive) model codes, there may be a severe limitation on the number of experiments that can reasonably be done. This motivates the construction of a fast-running (cheap) approximation to the original code, for use in experiments where a large number of runs may be necessary. Here we discuss our approximation of a simulation model for the compression ... continued below

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Pages: (6 p)

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Mitchell, T. & Morris, M. January 1, 1991.

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Description

There is widespread use of computer models as tools in scientific research. As surrogates for physical or behavioral systems, such models can be subjected to experimentation, the goal being to predict how the corresponding real system would behave under certain conditions. For long-running (expensive) model codes, there may be a severe limitation on the number of experiments that can reasonably be done. This motivates the construction of a fast-running (cheap) approximation to the original code, for use in experiments where a large number of runs may be necessary. Here we discuss our approximation of a simulation model for the compression molding of sheet molding compound, applied to the manufacture of an automobile hood. The approximation was constructed using Bayesian interpolation methods for prediction of the movement of the flow front. The predictions were based on data generated by a sequence of computer experiments, using designs chosen according to a type of D-optimality criterion. 8 refs., 1 tab.

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Pages: (6 p)

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OSTI; NTIS; GPO Dep.

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  • Interface 1991: computing science and statistics, Seattle, WA (United States), 22-24 Apr 1991

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  • Other: DE92000421
  • Report No.: CONF-9104300-1
  • Grant Number: AC05-84OR21400
  • Office of Scientific & Technical Information Report Number: 5181992
  • Archival Resource Key: ark:/67531/metadc1054070

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Office of Scientific & Technical Information Technical Reports

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  • January 1, 1991

Added to The UNT Digital Library

  • Jan. 22, 2018, 7:23 a.m.

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  • Feb. 1, 2018, 6:20 p.m.

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Mitchell, T. & Morris, M. Using computer experiments to construct a cheap substitute for an expensive simulation model, article, January 1, 1991; Tennessee. (digital.library.unt.edu/ark:/67531/metadc1054070/: accessed October 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.