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Odločitvena drevesa in mehke množice : doktorska disertacijaHleb Babič, ŠpelaV pričujoči doktorski disertaciji smo zastavili in preverili hipotezo, da je z uporabo mehke teorije sistemov mogoče zgraditi odločitvena drevesa, ki so primernejša in natančnejša od klasičnih ... odločitvenih dreves za uporabo v vsakdanjem odločanju. Podlaga hipotezi je bilo dotedanje raziskovalno delo na področju odločitvenih dreves, ki je pokazalo pomanjkljivosti predvsem pri diskretizaciji atributov in postavljanju ostrih mej med podintervali. Pregled obstoječih raziskav je pokazal, da takšne raziskave še ne obstajajo, kar je pomenilo popolnoma novo zasnovo teorretičnega in praktičnega modela. Najprej smo zastavili teoretični model mehkih odločitvenih dreves. Pri tem smo upoštevali mehko predstavljene atribute, mehko hevristično funkcijo in mehek postopek odločanja z zgrajenim odločitvenim drevesom. Za preverjanje teoretičnega modela je bilo potrebno zgraditi programsko orodje za gradnjo in uporabo mehkih odločitvenih dreves. Odločili smo se za okolje Matlab 5.3 in zgradili orodje, ki služi za pripravo odločitvenega problema, gradnjo mehkega odločitvenega drevesa s pomočjo mehke hevristične funkcije in mehko odločanje o nerešenih primerih. Kot rezultat mehkega odločanja dobimo vektor pripadnosti odločitvenim razredom in ne stroge enoumne pripadnosti enemu od odločitvenih razredov, kar je še posebej uporabno v primeru medicinske diagnostike. Za preverjanje delovanja orodja smo uporabili medicinsko podatkovno bazo, v kateri so bili podatki o bolnikih z Alzheimrejevo boleznijo in bolniki z ostalimi vaskularnimi težavami - simptomi obeh bolezni so zelo podobni in jih zdravniki lahko ločijo šele po enem letu razvoja bolezni. Namen mehkih odločitvenih dreves je bil pomagati pri zgodnji diagnostiki bolezni.Type of material - dissertationPublication and manufacture - Maribor : [Š. Hleb Babič], 2001Language - slovenianCOBISS.SI-ID - 46469889
Author
Hleb Babič, Špela
Other authors
Kokol, Peter, 1957- |
Stiglic, Bruno
Topics
inteligentni sistemi
Library/institution |
City | Acronym | For loan | Other holdings |
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Library of Technical Faculties, Maribor | Maribor | KTFMB |
reading room 1 cop.
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National and University Library, Ljubljana | Ljubljana | NUK |
reading room 1 cop.
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University of Maribor Library | Maribor | UKM |
reading room 1 cop.
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Hleb Babič, Špela | 15327 |
Kokol, Peter, 1957- | 03782 |
Stiglic, Bruno | 03034 |
Source: Personal bibliographies
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