Spatiaalinen klusterointi
نویسنده
چکیده
Suurten tietomassojen käsittely ja analysointi on tietokantojen, WWW:n ja satelliittijärjestelmien takia yhä haastavampaa. Miljoonia tietueita sisältävien tietovarastojen hahmotus ei ole manuaalisin keinoin käytännöllistä tai edes mahdollista. Myös paikkatiedon määrä ja saatavuus on lisääntynyt muun tiedon mukana mm. satelliittipaikannuksen, karttapalvelujen ja muiden paikkatietojärjestelmien ansiosta. Tiedonlouhinta (tiedonrikastus) on suurten tietojoukkojen (tietokantojen, mittaustiedon, paikkatiedon...) analyysia ja mallien muodostusta. Klusterointi on havainnollinen tapa tiivistää tietoa ja etsiä havaintojoukosta keskenään samanlaisia alkioita. Seminaarityössä tutkitaan paikkatiedon louhintaan soveltuvia klusterointimenetelmiä. Seminaarityö jakautuu seuraavasti: luvussa 2 käsitellään tiedon louhintaa yleisesti ja spatiaalista klusterointia tarkemmin sovelluksineen. Luvussa 3 esitellään ja arvioidaan esimerkkialgotitmit. 4. luku on yhteenveto.
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تاریخ انتشار 2003