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Wissensrepräsentation
book

Wissensrepräsentation

by Wolfgang G. Stock, Mechtild Stock
July 2014
Intermediate to advanced
459 pages
22h 42m
German
De Gruyter Oldenbourg
Content preview from Wissensrepräsentation
378
20 Automatisches Indexieren
Zur Bestimmung der Ähnlichkeit verwendet die Informationswissenschaft
Koeffizienten von Jaccard und Sneath, von Dice sowie den Cosinus (nach Sal-
ton). Die Koeffizienten finden bei einer Treffermenge Einsatz und fuhren zu
einer Ähnlichkeitsmatrix der Trefferdokumente. Die darauf aufbauende
Clusteranalyse arbeitet entweder nach dem Single-Link-, dem Complete-Link
oder nach dem Group-Average-Link-Verfahren. Sinnvoll sind hierarchische
Klassierungen; an der Nutzerschnittstelle ist der Einsatz von Informationsvisu-
alisierung hilfreich.
Literatur
Anderberg, M.R. (1973): Cluster Analysis for Applications. - New York ...
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Publisher Resources

ISBN: 9783486584394