riverculture

01-19-2009, 12:47 AM

Hi All:

In the second edition of the book DATA MINING by Ian and Eibe, there is a regression tree in Figure 3.7 (b), I am wondering what the percentage in a tree node is and how it is calculated.

For example, the following numbers are taken from the leaf that is connected to the tree node of MMAX on the left side of tree. 29.8 is the average value, 37 is the number of instances, but what is 8.18%?

29.8

(37/8.18%)

Thank you very much

Wen

In the second edition of the book DATA MINING by Ian and Eibe, there is a regression tree in Figure 3.7 (b), I am wondering what the percentage in a tree node is and how it is calculated.

For example, the following numbers are taken from the leaf that is connected to the tree node of MMAX on the left side of tree. 29.8 is the average value, 37 is the number of instances, but what is 8.18%?

29.8

(37/8.18%)

Thank you very much

Wen