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dc.contributor.authorChristianson, B.
dc.contributor.authorDavies, A.
dc.contributor.authorDixon, Laurence
dc.contributor.authorRoy, R.
dc.contributor.authorvan der Zee, P.
dc.date.accessioned2015-03-02T10:18:27Z
dc.date.available2015-03-02T10:18:27Z
dc.date.issued1997
dc.identifier.citationChristianson , B , Davies , A , Dixon , L , Roy , R & van der Zee , P 1997 , ' Giving reverse differentiation a helping hand ' , Optimization Methods and Software , vol. 8 , no. 1 , pp. 53-67 . https://doi.org/10.1080/10556789708805665
dc.identifier.issn1055-6788
dc.identifier.otherPURE: 8160703
dc.identifier.otherPURE UUID: 3ec46c89-66a1-4fa5-b6ac-9fd2f6a8512a
dc.identifier.otherScopus: 0031332221
dc.identifier.urihttp://hdl.handle.net/2299/15489
dc.description.abstractReverse automatic differentiation provides a very low bound on the operations count for calculating a gradient of a scalar function in n dimensions but suffers from a high storage requirement. In this paper we will show that both can often be greatly reduced. This will be illustrated using the inverse diffusion problem. This problem involves the solution of partial differential equations using finite elements, the solution of many sets of linear equations by Choleski decomposition, which together lead to the solution of a nonlinear least squares optimisation problem by conjugate gradients. The approach described here has enabled the gradient of this problem to be obtained at a small fraction of the operation count of the function evaluation and reduced the store required to evaluate the gradient to the same order as that required to evaluate the function. Similar results are given for the directional second derivativeen
dc.format.extent15
dc.language.isoeng
dc.relation.ispartofOptimization Methods and Software
dc.titleGiving reverse differentiation a helping handen
dc.contributor.institutionSchool of Computer Science
dc.contributor.institutionScience & Technology Research Institute
dc.contributor.institutionCentre for Computer Science and Informatics Research
dc.description.statusPeer reviewed
dc.relation.schoolSchool of Computer Science
dcterms.dateAccepted1997
rioxxterms.versionofrecordhttps://doi.org/10.1080/10556789708805665
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


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