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Marketing Forschung > -J- Clusteranalyse > Flashcards

-J- Clusteranalyse Flashcards

1
Q

Cluster sind

A

intern homogen, extern heterogen

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2
Q

Beispiel

A

Sinus Millieus

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3
Q

Distanzmaß

A

Minkowski Metrik

n-euklidische Distanz

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4
Q

spezielle Metriken

A

city block
euklidisch
quadriert euklidisch
Frage ist, wie groß die Potenz, um Ausreißer zu streifen

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5
Q

Arten hierarchischer Verfahren

A

agglomerative, divisive

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6
Q

Ablauf

A

Ausgangsdistanzmatrix
Clusterpaar mit minimaler Distanz
Verschmelzung
Matrix neu berechnen

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7
Q

Single Linkage

A

suche minimale geringste Distanz

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8
Q

Complete Linkage

A

suche minimale höchste Distanz

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9
Q

Centroid

A

suche minimale Centroiddistanz

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10
Q

Average Linkage

A

Mittelwert der Einzeldistanzen minimal

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11
Q

Ward Methode

A

Fusioniere, sodass sich Heterogenitätsmaß am wenigsten vergrößert

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12
Q

Faustregel
Single Linkage?
Ward?

A

Single Linkage
-Ausreißer entdecken
Ward
-homogene Gruppen

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13
Q

Anzahl der Cluster nach Elbow

A

hier einer mehr als bei scree-plot ;)

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Marketing Forschung (11 decks)

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