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[{"key": "dc.contributor.author", "value": "Lepp\u00e4nen, Juho", "language": null, "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2025-06-12T06:09:07Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2025-06-12T06:09:07Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2025", "language": null, "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/103443", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Artistien tekem\u00e4t musiikilliset tyylivalinnat ovat muokanneet musiikkimarkkinoita ajan saatossa johtaen alueellisiin tai kokonaisia maanosia koskeviin trendeihin erotellen valtavirta- ja marginaalimusiikin toisistaan. Musiikkialan lis\u00e4ksi artisteilla on my\u00f6s suuri yhteiskunnallinen vaikutus, joka ohjaa kulutusta ja ihmisten k\u00e4ytt\u00e4ytymismalleja. Artistien valintoihin ovat vuosikymmenten saatossa vaikuttaneet ulkoiset tekij\u00e4t, kuten vallitseva kulttuuri ja teknologian kehitys. Keskeisen\u00e4 tekij\u00e4n\u00e4 voidaan kuitenkin n\u00e4hd\u00e4 artistiin itseens\u00e4 liittyv\u00e4 henkil\u00f6kohtainen ja jatkuvasti muuttuva ominaisuus, ik\u00e4.\n\nT\u00e4ss\u00e4 tutkielmassa tarkasteltiin artistin ik\u00e4\u00e4ntymisen vaikutusta musiikkikappaleeseen liittyv\u00e4\u00e4n ominaisuuteen, akustisuuteen, hy\u00f6dynt\u00e4en Spotify-musiikki- palvelun rajapinnasta saatua dataa artisteista, albumeista ja kappaleista. Vastemuuttujalle muodostettiin yleistetty additiivinen sekamalli, jonka avulla pyrittiin kuvailemaan muuttujan muutoksia artistin elinkaaren aikana sek\u00e4 mittaamaan selitt\u00e4vien muuttujien vaikutuksien suuruutta vasteeseen. Artistin i\u00e4n lis\u00e4ksi selitt\u00e4vin\u00e4 muuttujina k\u00e4ytettiin musiikkikappaleen julkaisuvuotta sek\u00e4 luokiteltua genre-muuttujaa musiikillisten trendien ja genrekohtaisten erojen vaikutuksien arvioimiseksi.\n\nTutkimuksessa havaittiin, ett\u00e4 akustisuus v\u00e4heni artistin ik\u00e4\u00e4ntymisen my\u00f6t\u00e4. I\u00e4n marginaalivaikutus oli akustisuutta lis\u00e4\u00e4v\u00e4, eli ik\u00e4\u00e4ntyess\u00e4\u00e4n artistit tekiv\u00e4t akustisempaa musiikkia verrattuna nuorempana julkaistuihin kappaleisiin. Kappaleen julkaisuajankohdan vaikutus oli kuitenkin p\u00e4invastainen: mit\u00e4 uudempaa julkaistu musiikki on, sit\u00e4 v\u00e4hemm\u00e4n akustisia piirteit\u00e4 kappaleet keskim\u00e4\u00e4rin sis\u00e4lsiv\u00e4t. Artistin i\u00e4n ja julkaisuvuoden yhteisvaikutuksesta akustisuus laski ajan kuluessa. Suurinta muutos oli rock- ja metallimusiikissa ja pienint\u00e4 folkmusiikin parissa.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "The musical style choices made by artists have shaped the music market over time, leading to regional or even continent-wide trends that distinguish mainstream music from marginal genres. In addition to their influence on the music industry, artists also have a significant societal impact, guiding consumption habits and behavioral patterns. Over the decades, external factors such as prevailing culture and technological development have influenced artists' decisions. However, a key factor to be taken into consideration is a personal and constantly changing characteristic related to the artist itself: age.\n\nThis thesis examined the effect of artist's aging on a certain characteristic of music, acousticness, using data obtained from the Spotify API, including information about artists, albums, and songs. A generalized additive mixed model was constructed for the response variable to describe its changes over an artist\u2019s lifespan and to measure the magnitude of the explanatory variables\u2019 effects on the response. In addition to the artist\u2019s age, the explanatory variables included the release year of the song and a categorized genre variable to assess the impact of musical trends and genre-specific differences.\n\nThe study found that acousticness decreased as artist aged. However, the marginal effect of age was increasing with respect to acousticness, meaning that as artists grew older, they tended to produce more acoustic music compared to their earlier work. In contrast, the release year had an opposite effect: the more recent the music, the less acoustic characteristics the songs had on average. Due to the interaction between age and release year, acousticness declined over time. This change was most pronounced in rock and metal music, and least pronounced in folk music.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Paivi Vuorio (paelvuor@jyu.fi) on 2025-06-12T06:09:07Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2025-06-12T06:09:07Z (GMT). No. of bitstreams: 0\n Previous issue date: 2025", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "56", "language": null, "element": "format", "qualifier": "extent", "schema": "dc"}, {"key": "dc.language.iso", "value": "eng", "language": null, "element": "language", "qualifier": "iso", "schema": "dc"}, {"key": "dc.rights", "value": "In Copyright", "language": null, "element": "rights", "qualifier": null, "schema": "dc"}, {"key": "dc.subject.other", "value": "acousticness", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "generalized additive mixed model", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "penalized spline", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "Spotify API", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "akustisuus", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "yleistetty additiivinen sekamalli", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Generalized additive mixed model for detecting differences in songs' acousticness during artist\u2019s lifespan", "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-202506125258", "language": null, "element": "identifier", "qualifier": "urn", "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": "Jyv\u00e4skyl\u00e4n yliopisto", "language": null, "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "University of Jyv\u00e4skyl\u00e4", "language": null, "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.type.coar", "value": "http://purl.org/coar/resource_type/c_bdcc", "language": null, "element": "type", "qualifier": "coar", "schema": "dc"}, {"key": "dc.rights.copyright", "value": "\u00a9 The Author(s)", "language": "fi", "element": "rights", "qualifier": "copyright", "schema": "dc"}, {"key": "dc.rights.accesslevel", "value": "openAccess", "language": null, "element": "rights", "qualifier": "accesslevel", "schema": "dc"}, {"key": "dc.type.publication", "value": "masterThesis", "language": null, "element": "type", "qualifier": "publication", "schema": "dc"}, {"key": "dc.subject.yso", "value": "populaarimusiikki", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "ik\u00e4\u00e4ntyminen", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "musiikkimarkkinat", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.rights.url", "value": "https://rightsstatements.org/page/InC/1.0/", "language": null, "element": "rights", "qualifier": "url", "schema": "dc"}]
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