@prefix ocrer: <http://purl.org/net/OCRe/research.owl#> .
@prefix owl:   <http://www.w3.org/2002/07/owl#> .
@prefix scires: <http://vivoweb.org/ontology/scientific-research#> .
@prefix xsd:   <http://www.w3.org/2001/XMLSchema#> .
@prefix skos:  <http://www.w3.org/2004/02/skos/core#> .
@prefix rdfs:  <http://www.w3.org/2000/01/rdf-schema#> .
@prefix ocresd: <http://purl.org/net/OCRe/study_design.owl#> .
@prefix swo:   <http://www.ebi.ac.uk/efo/swo/> .
@prefix cito:  <http://purl.org/spar/cito/> .
@prefix geo:   <http://aims.fao.org/aos/geopolitical.owl#> .
@prefix ocresst: <http://purl.org/net/OCRe/statistics.owl#> .
@prefix dcterms: <http://purl.org/dc/terms/> .
@prefix vivo:  <http://vivoweb.org/ontology/core#> .
@prefix event: <http://purl.org/NET/c4dm/event.owl#> .
@prefix vann:  <http://purl.org/vocab/vann/> .
@prefix foaf:  <http://xmlns.com/foaf/0.1/> .
@prefix c4o:   <http://purl.org/spar/c4o/> .
@prefix fabio: <http://purl.org/spar/fabio/> .
@prefix vcard: <http://www.w3.org/2006/vcard/ns#> .
@prefix thkoeln: <http://cris.nrw/hisinone#> .
@prefix vitro: <http://vitro.mannlib.cornell.edu/ns/vitro/0.7#> .
@prefix vitro-public: <http://vitro.mannlib.cornell.edu/ns/vitro/public#> .
@prefix rdf:   <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix ocresp: <http://purl.org/net/OCRe/study_protocol.owl#> .
@prefix bibo:  <http://purl.org/ontology/bibo/> .
@prefix obo:   <http://purl.obolibrary.org/obo/> .
@prefix ro:    <http://purl.obolibrary.org/obo/ro.owl#> .

obo:BFO_0000031  a  owl:Class ;
        rdfs:label  "Bedingter Kontinuant"@de-DE , "Generically Dependent Continuant"@en-US , "Generically Dependent Continuant"@en .

<https://fis.th-koeln.de/vivo/individual/FF_001>
        <http://cris.nrw/hisinone/istForschungsfeldvon>
                <https://fis.th-koeln.de/vivo/individual/publ_19669> .

<https://fis.th-koeln.de/vivo/individual/cite_19669-0>
        a       thkoeln:Zitat , owl:Thing .

<http://cris.nrw/hisinone/OpenAccess>
        a           <http://cris.nrw/hisinone/Zugangsrecht> , owl:NamedIndividual , owl:Thing ;
        rdfs:label  "Open Access"@en-US , "Open Access"@de-DE .

obo:BFO_0000002  a  owl:Class ;
        rdfs:label  "Kontinuant"@de-DE , "Continuant"@en-US , "Continuant"@en .

<https://fis.th-koeln.de/vivo/individual/eigene_HS>
        a           thkoeln:Organisationseinheit , foaf:Agent , obo:BFO_0000001 , obo:BFO_0000004 , obo:BFO_0000002 , foaf:Organization , owl:Thing ;
        rdfs:label  "TH Köln" ;
        <http://cris.nrw/hisinone/istOrganisationseinheitVon>
                <https://fis.th-koeln.de/vivo/individual/publ_19669> .

<http://cris.nrw/date2019>
        a       obo:BFO_0000003 , obo:BFO_0000008 , obo:BFO_0000001 , vivo:DateTimeValue , obo:BFO_0000148 , owl:Thing .

obo:BFO_0000001  a  owl:Class ;
        rdfs:label  "Entität"@de-DE , "Entity"@en-US , "Entity"@en .

<https://fis.th-koeln.de/vivo/individual/aut_19669-3>
        a             obo:BFO_0000001 , obo:BFO_0000020 , vivo:Authorship , vivo:Relationship , obo:BFO_0000002 , owl:Thing ;
        vivo:relates  <https://fis.th-koeln.de/vivo/individual/publ_19669> .

<http://cris.nrw/hisinone/RessourceText>
        a           owl:NamedIndividual , <http://cris.nrw/hisinone/ArtderRessource> , owl:Thing ;
        rdfs:label  "Text"@de-DE , "Text"@en-US .

bibo:Document  a    owl:Class ;
        rdfs:label  "Dokument"@de-DE , "Document"@en-US , "Document"@en .

<https://fis.th-koeln.de/vivo/individual/10000151>
        a           thkoeln:Organisationseinheit , foaf:Agent , obo:BFO_0000001 , obo:BFO_0000004 , obo:BFO_0000002 , foaf:Organization , owl:Thing ;
        rdfs:label  "Institut für Informatik" ;
        <http://cris.nrw/hisinone/istOrganisationseinheitVon>
                <https://fis.th-koeln.de/vivo/individual/publ_19669> .

owl:Thing  a    owl:Class .

thkoeln:ArbeitspapierForschungsbericht
        a           owl:Class ;
        rdfs:label  "Working Paper/Research Report"@en-US , "Arbeitspapier / Forschungsbericht"@de-DE .

<https://fis.th-koeln.de/vivo/individual/aut_19669-2>
        a             obo:BFO_0000001 , obo:BFO_0000020 , vivo:Authorship , vivo:Relationship , obo:BFO_0000002 , owl:Thing ;
        vivo:relates  <https://fis.th-koeln.de/vivo/individual/publ_19669> .

obo:IAO_0000030  a  owl:Class ;
        rdfs:label  "Entität für Informationsinhalt"@de-DE , "Information Content Entity"@en-US , "Information Content Entity"@en .

<https://fis.th-koeln.de/vivo/individual/publ_19669>
        a                       obo:IAO_0000030 , thkoeln:ArbeitspapierForschungsbericht , obo:BFO_0000002 , obo:BFO_0000001 , thkoeln:Publikation , foaf:Document , owl:Thing , obo:BFO_0000031 , bibo:Document ;
        rdfs:label              "SACOBRA with Online Whitening for Solving Optimization Problems with High Conditioning" , "RDF description of SACOBRA with Online Whitening for Solving Optimization Problems with High Conditioning - https://fis.th-koeln.de/vivo/individual/publ_19669" ;
        thkoeln:URL             "http://arxiv.org/pdf/1904.08397v1" ;
        thkoeln:sprache         "englisch" ;
        thkoeln:status          "validiert" ;
        thkoeln:subtitle        "Technical Report" ;
        <http://cris.nrw/hisinone/hatForschungsfeld>
                <https://fis.th-koeln.de/vivo/individual/FF_001> ;
        <http://cris.nrw/hisinone/hatOrganisationseinheit>
                <https://fis.th-koeln.de/vivo/individual/eigene_HS> , <https://fis.th-koeln.de/vivo/individual/10000151> ;
        <http://cris.nrw/hisinone/hatRessourceart>
                <http://cris.nrw/hisinone/RessourceText> ;
        <http://cris.nrw/hisinone/hatZitat>
                <https://fis.th-koeln.de/vivo/individual/cite_19669-2> , <https://fis.th-koeln.de/vivo/individual/cite_19669-0> , <https://fis.th-koeln.de/vivo/individual/cite_19669-1> ;
        <http://cris.nrw/hisinone/hatZugangsrecht>
                <http://cris.nrw/hisinone/OpenAccess> ;
        <http://purl.org/dc/elements/1.1/date>
                "2026-04-04T01:54:16"^^xsd:dateTime ;
        <http://purl.org/dc/elements/1.1/publisher>
                <https://fis.th-koeln.de/vivo> ;
        <http://purl.org/dc/elements/1.1/rights>
                <https://fis.th-koeln.de/vivo/termsOfUse> ;
        bibo:abstract           "Real-world optimization problems often have expensive objective functions in terms of cost and time. It is desirable to find near-optimal solutions with very few function evaluations. Surrogate-assisted optimizers tend to reduce the required number of function evaluations by replacing the real function with an efficient mathematical model built on few evaluated points. Problems with a high condition number are a challenge for many surrogate-assisted optimizers including SACOBRA. To address such problems we propose a new online whitening operating in the black-box optimization paradigm. We show on a set of high-conditioning functions that online whitening tackles SACOBRA's early stagnation issue and reduces the optimization error by a factor between 10 to 1e12 as compared to the plain SACOBRA, though it imposes many extra function evaluations. Covariance matrix adaptation evolution strategy (CMA-ES) has for very high numbers of function evaluations even lower errors, whereas SACOBRA performs better in the expensive setting (less than 1e03 function evaluations). If we count all parallelizable function evaluations (population evaluation in CMA-ES, online whitening in our approach) as one iteration, then both algorithms have comparable strength even on the long run. This holds for problems with dimension D <= 20." ;
        vitro:mostSpecificType  thkoeln:ArbeitspapierForschungsbericht ;
        vivo:dateTimeValue      <http://cris.nrw/date2019> ;
        vivo:freetextKeyword    "Statistics - Machine Learning" , "Computer Science - Learning" , "Mathematics - Optimization and Control" ;
        vivo:publisher          <https://fis.th-koeln.de/vivo/individual/vg_ohneangabe> ;
        vivo:relatedBy          <https://fis.th-koeln.de/vivo/individual/aut_19669-1> , <https://fis.th-koeln.de/vivo/individual/aut_19669-2> , <https://fis.th-koeln.de/vivo/individual/aut_19669-3> .

<https://fis.th-koeln.de/vivo/individual/aut_19669-1>
        a             obo:BFO_0000001 , obo:BFO_0000020 , vivo:Authorship , vivo:Relationship , obo:BFO_0000002 , owl:Thing ;
        vivo:relates  <https://fis.th-koeln.de/vivo/individual/publ_19669> .

<https://fis.th-koeln.de/vivo/individual/cite_19669-2>
        a       thkoeln:Zitat , owl:Thing .

<https://fis.th-koeln.de/vivo/individual/vg_ohneangabe>
        vivo:publisherOf  <https://fis.th-koeln.de/vivo/individual/publ_19669> .

<https://fis.th-koeln.de/vivo/individual/cite_19669-1>
        a       thkoeln:Zitat , owl:Thing .

thkoeln:Publikation  a  owl:Class ;
        rdfs:label  "Publikationen"@de-DE , "Publications"@en-US .