{"data":{"id":"10.6084/m9.figshare.1603542","type":"dois","attributes":{"doi":"10.6084/m9.figshare.1603542","prefix":"10.6084","suffix":"m9.figshare.1603542","identifiers":[],"alternateIdentifiers":[],"creators":[{"name":"Tan, Matthias Hwai Yong","nameType":"Personal","givenName":"Matthias Hwai Yong","familyName":"Tan","affiliation":[],"nameIdentifiers":[]}],"titles":[{"title":"Monotonic Metamodels for Deterministic Computer Experiments"}],"publisher":"Taylor \u0026 Francis","container":{},"publicationYear":2015,"subjects":[{"subject":"Biophysics"},{"subject":"Medicine"},{"subject":"Neuroscience"},{"subject":"Physiology"},{"subject":"FOS: Biological sciences","schemeUri":"http://www.oecd.org/science/inno/38235147.pdf","subjectScheme":"Fields of Science and Technology (FOS)"},{"subject":"FOS: Biological sciences","subjectScheme":"Fields of Science and Technology (FOS)"},{"subject":"69999 Biological Sciences not elsewhere classified","subjectScheme":"FOR"},{"subject":"80699 Information Systems not elsewhere classified","subjectScheme":"FOR"},{"subject":"FOS: Computer and information sciences","schemeUri":"http://www.oecd.org/science/inno/38235147.pdf","subjectScheme":"Fields of Science and Technology (FOS)"},{"subject":"FOS: Computer and information sciences","subjectScheme":"Fields of Science and Technology (FOS)"},{"subject":"19999 Mathematical Sciences not elsewhere classified","subjectScheme":"FOR"},{"subject":"FOS: Mathematics","schemeUri":"http://www.oecd.org/science/inno/38235147.pdf","subjectScheme":"Fields of Science and Technology (FOS)"},{"subject":"FOS: Mathematics","subjectScheme":"Fields of Science and Technology (FOS)"}],"contributors":[],"dates":[{"date":"2015-11-17","dateType":"Created"},{"date":"2019-04-01","dateType":"Updated"},{"date":"2015","dateType":"Issued"}],"language":null,"types":{"ris":"DATA","bibtex":"misc","citeproc":"dataset","schemaOrg":"Dataset","resourceType":"Dataset","resourceTypeGeneral":"Dataset"},"relatedIdentifiers":[{"relationType":"IsSupplementTo","relatedIdentifier":"10.1080/00401706.2015.1105759","relatedIdentifierType":"DOI"}],"relatedItems":[],"sizes":["143764 Bytes"],"formats":[],"version":null,"rightsList":[{"rights":"Creative Commons Attribution 4.0 International","rightsUri":"https://creativecommons.org/licenses/by/4.0/legalcode","schemeUri":"https://spdx.org/licenses/","rightsIdentifier":"cc-by-4.0","rightsIdentifierScheme":"SPDX"}],"descriptions":[{"description":"In deterministic computer experiments, it is often known that the output is a monotonic function of some of the inputs. In these cases, a monotonic metamodel will tend to give more accurate and interpretable predictions with less prediction uncertainty than a nonmonotonic metamodel. The widely used Gaussian process (GP) models are not monotonic. A recent article in \u003ci\u003eBiometrika\u003c/i\u003e offers a modification that projects GP sample paths onto the cone of monotonic functions. However, their approach does not account for the fact that the GP model is more informative about the true function at locations near design points than at locations far away. Moreover, a grid-based method is used, which is memory intensive and gives predictions only at grid points. This article proposes the weighted projection approach that more effectively uses information in the GP model together with two computational implementations. The first is isotonic regression on a grid while the second is projection onto a cone of monotone splines, which alleviates problems faced by a grid-based approach. Simulations show that the monotone B-spline metamodel gives particularly good results. Supplementary materials for this article are available online.","descriptionType":"Abstract"}],"geoLocations":[],"fundingReferences":[],"xml":"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","url":"https://tandf.figshare.com/articles/dataset/Monotonic_Metamodels_for_Deterministic_Computer_Experiments/1603542","contentUrl":null,"metadataVersion":3,"schemaVersion":"http://datacite.org/schema/kernel-4","source":"mds","isActive":true,"state":"findable","reason":null,"viewCount":0,"viewsOverTime":[],"downloadCount":0,"downloadsOverTime":[],"referenceCount":0,"citationCount":0,"citationsOverTime":[],"partCount":0,"partOfCount":0,"versionCount":0,"versionOfCount":0,"created":"2015-11-17T00:37:12.000Z","registered":"2015-11-17T00:37:13.000Z","published":"2015","updat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