June 2009
Beginner to intermediate
428 pages
9h 48m
German
Content preview from Data Mining mit Microsoft SQL Server
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18.1. Geschachtelte Tabellen verstehen
Das Erstellen eines Miningmodells zur Warenkorbanalyse gleicht prinzipiell dem Erstellen eines Modells zur Klassifizierung, wie es in Kapitel 13 gezeigt wurde. Der Algorithmus der Wahl ist hierfür der Microsoft Association Rules-Algorithmus. Gerade bei einer Warenkorbanalyse kommt es vor, dass sich die zu analysierenden Daten in unterschiedlichen Tabellen befinden. Das in diesem Kapitel behandelte Beispiel geht davon aus, dass eine Tabelle Informationen über Käufe und eine andere Tabelle Informationen über die im Zuge dieser Käufe bezogenen Produkte beinhalten. SQL Server Analysis Services verlangt allerdings, dass die zu analysierenden Daten in Form von Fällen bereitgestellt werden, wobei jeder Fall einem ...
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