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[{"key": "dc.contributor.advisor", "value": "Karvanen, Juha", "language": null, "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "Nyblom, Jukka", "language": null, "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Tanskanen, Jussi", "language": null, "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2017-05-24T18:52:29Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2017-05-24T18:52:29Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2017", "language": null, "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.other", "value": "oai:jykdok.linneanet.fi:1702247", "language": null, "element": "identifier", "qualifier": "other", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/54117", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Ihmistieteiss\u00e4 tilastollinen tutkimusaineisto ker\u00e4t\u00e4\u00e4n usein kyselylomakkeissa j\u00e4rjestysasteikollisten Likert-asteikollisten muuttujien avulla. N\u00e4in ker\u00e4tty aineisto on karkeaa, eli todellinen havaintoavaruus on py\u00f6ristetty rajalliseen m\u00e4\u00e4r\u00e4\u00e4n kategorioita, ja t\u00e4llainen diskreetti j\u00e4rjestysasteikollinen tilastoaineisto voi osoittautua ongelmalliseksi niiss\u00e4 tapauksissa, joissa k\u00e4ytett\u00e4v\u00e4t tilastolliset analyysimenetelm\u00e4t on kehitetty jatkuville muuttujille. Yksi t\u00e4llainen menetelm\u00e4 on parametriton lokaali regressioanalyysi, jota voidaan hy\u00f6dynt\u00e4\u00e4 esimerkiksi k\u00e4yr\u00e4viivaisten yhteyksien analysointiin. \n\nTutkielma ehdottaa ja testaa aineiston augmentaatioon perustuvaa menetelm\u00e4\u00e4 lokaalin regressioanalyysin toteuttamiseen j\u00e4rjestysasteikollisilla muuttujilla. Menetelm\u00e4ss\u00e4 j\u00e4rjestysasteikolliset muuttujat augmentoidaan satunnaisesti tasajakaumasta arpoen jatkuviksi muuttujiksi, joille suoritetaan lokaali regressioanalyysi. Simuloimalla agmentointeja ja lokaalin regression sovituksia saadaan estimoitua keskim\u00e4\u00e4r\u00e4inen sovite ja sille luottamusv\u00e4li. Menetelm\u00e4\u00e4 testataan kolmella erilaiselle generoiduille aineistoille, jotka kuvaavat erilaisia k\u00e4yr\u00e4viivaisia riippuvuuksia ja empiirisell\u00e4 esimerkill\u00e4. \n\nSimuloinnin tulokset osoittavat menetelm\u00e4n tarkkuuden olevan kiinni eniten j\u00e4rjestysasteikollisten muuttujien luokkien lukum\u00e4\u00e4r\u00e4st\u00e4. Luokkien lukum\u00e4\u00e4r\u00e4n kasvaessa menetelm\u00e4n tarkkuus paranee. Aineiston koko tai yhteyden funktionaalisen muodon monimutkaisuus eiv\u00e4t olleet niin merkitt\u00e4vi\u00e4 tekij\u00f6it\u00e4. Empiirisen esimerkin perusteella voi p\u00e4\u00e4tell\u00e4, ett\u00e4 suuri hajonta ja muuttujien vinous heikent\u00e4v\u00e4t my\u00f6s analyysin tarkkuutta. Empiiriset aineistot voivat olla hyvin karkeita, hajonta isoa, jakaumat vinoja ja efektit pieni\u00e4. Aineiston augmentaatioon perustuva lokaalin regression menetelm\u00e4 antaa kuitenkin useaan k\u00e4ytt\u00f6tarpeeseen riitt\u00e4v\u00e4n approksimaation k\u00e4yr\u00e4viivaisen yhteyden luonteesta jo viisi- tai seitsem\u00e4n-luokkaisilla j\u00e4rjestysasteikoillisilla muuttujilla.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted using Plone Publishing form by Jussi Tanskanen (juoltans) on 2017-05-24 18:52:29.066954. Form: Pro gradu -lomake (https://kirjasto.jyu.fi/julkaisut/julkaisulomakkeet/pro-gradu-lomake). JyX data: [jyx_publishing-allowed (fi) =True]", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by jyx lomake-julkaisija (jyx-julkaisija.group@korppi.jyu.fi) on 2017-05-24T18:52:29Z\nNo. of bitstreams: 2\nURN:NBN:fi:jyu-201705242500.pdf: 2495123 bytes, checksum: fa25a2987eaa2ef0ffc56e435e96540b (MD5)\nlicense.html: 4871 bytes, checksum: 93c9c06bd812896b2d1047c988f45543 (MD5)", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2017-05-24T18:52:29Z (GMT). No. of bitstreams: 2\nURN:NBN:fi:jyu-201705242500.pdf: 2495123 bytes, checksum: fa25a2987eaa2ef0ffc56e435e96540b (MD5)\nlicense.html: 4871 bytes, checksum: 93c9c06bd812896b2d1047c988f45543 (MD5)\n Previous issue date: 2017", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "1 verkkoaineisto (36 sivua)", "language": null, "element": "format", "qualifier": "extent", "schema": "dc"}, {"key": "dc.format.mimetype", "value": "application/pdf", "language": null, "element": "format", "qualifier": "mimetype", "schema": "dc"}, {"key": "dc.language.iso", "value": "fin", "language": null, "element": "language", "qualifier": "iso", "schema": "dc"}, {"key": "dc.rights", "value": "In Copyright", "language": "en", "element": "rights", "qualifier": null, "schema": "dc"}, {"key": "dc.subject.other", "value": "aineiston augmentaatio", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "lokaali regressio", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "k\u00e4yr\u00e4viivaisuus", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Lokaalin regressiomallin sovittaminen j\u00e4rjestysasteikoisille muuttujille hy\u00f6dynt\u00e4en aineiston augmentaatiota", "language": null, "element": "title", "qualifier": null, "schema": "dc"}, {"key": "dc.type", "value": "master thesis", "language": null, "element": "type", "qualifier": null, "schema": "dc"}, {"key": "dc.identifier.urn", "value": "URN:NBN:fi:jyu-201705242500", "language": null, "element": "identifier", "qualifier": "urn", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Pro gradu -tutkielma", "language": "fi", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Master\u2019s thesis", "language": "en", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Matemaattis-luonnontieteellinen tiedekunta", "language": "fi", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Faculty of Sciences", "language": "en", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Matematiikan ja tilastotieteen laitos", "language": "fi", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Department of Mathematics and Statistics", "language": "en", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "University of Jyv\u00e4skyl\u00e4", "language": "en", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "Jyv\u00e4skyl\u00e4n yliopisto", "language": "fi", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Tilastotiede", "language": "fi", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Statistics", "language": "en", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.date.updated", "value": "2017-05-24T18:52:29Z", "language": null, "element": "date", "qualifier": "updated", "schema": "dc"}, {"key": "yvv.contractresearch.funding", "value": "0", "language": null, "element": "contractresearch", "qualifier": "funding", "schema": "yvv"}, {"key": "dc.type.coar", "value": "http://purl.org/coar/resource_type/c_bdcc", "language": null, "element": "type", "qualifier": "coar", "schema": "dc"}, {"key": "dc.rights.accesslevel", "value": "openAccess", "language": "fi", "element": "rights", "qualifier": "accesslevel", "schema": "dc"}, {"key": "dc.type.publication", "value": "masterThesis", "language": null, "element": "type", "qualifier": "publication", "schema": "dc"}, {"key": "dc.subject.oppiainekoodi", "value": "4043", "language": null, "element": "subject", "qualifier": "oppiainekoodi", "schema": "dc"}, {"key": "dc.subject.yso", "value": "regressioanalyysi", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.format.content", "value": "fulltext", "language": null, "element": "format", "qualifier": "content", "schema": "dc"}, {"key": "dc.rights.url", "value": "https://rightsstatements.org/page/InC/1.0/", "language": null, "element": "rights", "qualifier": "url", "schema": "dc"}, {"key": "dc.type.okm", "value": "G2", "language": null, "element": "type", "qualifier": "okm", "schema": "dc"}]
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