@prefix dcat: <http://www.w3.org/ns/dcat#> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix vcard: <http://www.w3.org/2006/vcard/ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://rec.harvest-normandie.data4citizen.com/dataset/oai-hal-hal-00917811v1> a dcat:Dataset ;
    dct:description """
              In this paper, we study the approximability properties of symmetric TSP under an approximation measure called the differential ratio. More precisely, we improve up to 3/4 − ε (for any ε > 0) the best differential ratio of 2/3 known so far, given in Hassin and Khuller, "z-Approximations", J. of Algorithms, 41(2), 429-442, 2001.
            """ ;
    dct:identifier "hal-00917811" ;
    dct:issued "2026-05-07T20:11:35.189505"^^xsd:dateTime ;
    dct:language "en" ;
    dct:modified "2026-05-07T20:11:35.189510"^^xsd:dateTime ;
    dct:publisher <https://rec.harvest-normandie.data4citizen.com/organization/cce9db95-46d9-4dc2-84b6-764215d0a002> ;
    dct:title "Better differential approximation for symmetric TSP" ;
    dcat:contactPoint [ a vcard:Organization ;
            vcard:fn "CCSD" ] ;
    dcat:distribution <https://rec.harvest-normandie.data4citizen.com/dataset/oai-hal-hal-00917811v1/resource/1843a719-0d1a-4667-992b-621ffe58fe53> ;
    dcat:keyword "infoeu-reposemanticspreprint",
        "infoinfo-cccomputer-science-cscomputational-complexity-cscc",
        "infoinfo-dscomputer-science-csdata-structures-and-algorithms-csds",
        "infoinfo-rocomputer-science-csoperations-research-mathoc",
        "preprints-working-papers-" ;
    dcat:landingPage <https://hal.science/hal-00917811> .

<https://rec.harvest-normandie.data4citizen.com/dataset/oai-hal-hal-00917811v1/resource/1843a719-0d1a-4667-992b-621ffe58fe53> a dcat:Distribution ;
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    dct:issued "2026-05-07T20:11:35.190608"^^xsd:dateTime ;
    dct:modified "2026-05-07T20:11:35.183082"^^xsd:dateTime ;
    dct:title "Better differential approximation for symmetric TSP" ;
    dcat:accessURL <https://hal.science/hal-00917811> .

<https://rec.harvest-normandie.data4citizen.com/organization/cce9db95-46d9-4dc2-84b6-764215d0a002> a foaf:Agent ;
    foaf:name "test_moissonnage_selune" .

<https://hal.science/hal-00917811> a foaf:Document .