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An optimization approach to generate accurate and efficient lookup tables for engineering applications

2019Conference object Restricted access
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dc.contributor.authorMagalhães, H.
dc.contributor.authorMarques, F.
dc.contributor.authorLiu, B.
dc.contributor.authorPombo, João
dc.contributor.authorFlores, P.
dc.contributor.authorAmbrósio, J.
dc.contributor.authorBruni, S.
dc.date.accessioned2020-11-06T19:18:11Z
dc.date.available2020-11-06T19:18:11Z
dc.date.issued2019
dc.description.abstractIn a wide number of engineering applications, the interpolation of a lookup table (LUT) can substitute expensive calculations. The generation of a LUT consists of pre-calculating a set of quantities from a collection of points that covers the study domain where the interpolation is possible. Nevertheless, the selection of points where the exact calculation is performed is of utmost importance for the LUT size and accuracy. Thus, the goal of this paper is to provide a dedicated optimization tool for the generation of accurate and eficiente LUT. Here, the domain of the LUT is structured by the so-called layers, in which, the thicknesses of each layer define the distance between pre-calculated points. The optimization problem consists of maximizing the layer thicknesses, that is, minimizing the LUT size, such that the interpolation errors within the layer domain are kept under specified tolerances. Thus, a sequential design approach is applied to design each layer of the LUT until the layers cover the study domain. To achieve reliable LUT generations, a new optimization algorithm has been implemented to reach optimal layers with minimum iterations. The strategy proposed here is applied to generate a LUT to substitute a selected analytical function. The optimization procedures demonstrate not only the performance of the optimization algorithm, but also its convenience in the generation of multidimensional LUT.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationMAGALHÃES, H.; [et al] – An optimization approach to generate accurate and efficient lookup tables. In EngOpt 2018 Proceedings of the 6th International Conference on Engineering Optimization. Lisboa, Portugal: Springer, 2019. ISBN 978-3-319-97773-7. Pp. 1446–1457pt_PT
dc.identifier.doi10.1007/978-3-319-97773-7_124pt_PT
dc.identifier.isbn978-3-319-97773-7
dc.identifier.urihttp://hdl.handle.net/10400.21/12357
dc.language.isoengpt_PT
dc.publisherSpringer International Publishingpt_PT
dc.subjectLookup table generationpt_PT
dc.subjectSequential optimal designpt_PT
dc.subjectDiagonal searchpt_PT
dc.titleAn optimization approach to generate accurate and efficient lookup tables for engineering applicationspt_PT
dc.typeconference object
dspace.entity.typePublication
oaire.citation.conferencePlace17-19 Spetember 2018 - Lisboa, Portugalpt_PT
oaire.citation.endPage1457pt_PT
oaire.citation.startPage1446pt_PT
oaire.citation.titleEngOpt 2018 Proceedings of the 6th International Conference on Engineering Optimizationpt_PT
person.familyNamePombo
person.givenNameJoão
person.identifier.ciencia-id3E1A-F8C1-9B8D
person.identifier.orcid0000-0002-5877-1989
person.identifier.ridB-9140-2013
person.identifier.scopus-author-id16022941000
rcaap.rightsclosedAccesspt_PT
rcaap.typeconferenceObjectpt_PT
relation.isAuthorOfPublication4b7bfa25-4662-4995-8146-4b45c39ffc53
relation.isAuthorOfPublication.latestForDiscovery4b7bfa25-4662-4995-8146-4b45c39ffc53

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