Decision Trees from large Databases: SLIQ
Decision Trees from large Databases: SLIQ
Decision Trees from large Databases: SLIQ
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CART- Example<br />
• Which split is better?<br />
L = [2,3,4,10,11,12]<br />
SSE L = 100<br />
ja<br />
nein<br />
SSE L = y − y 2<br />
x,y ∈L where y = 1 L<br />
x 1<br />
x 2<br />
L = [2,3,4,10,11,12]<br />
ja<br />
nein<br />
L 1 = [2,3] L 2 =[4,10,11,12] L 1 =[2,4,10] L 2 =[3,11,12]<br />
SSE L 1 = 0,5 SSE L 2 = 38,75 SSE L 1 = 34,67 SSE L 2 = 48,67<br />
x,y ∈L<br />
y<br />
Sawade/Landwehr/Prasse/Scheffer, Maschinelles Lernen<br />
62
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