The Data Mining Forum 
IMPORTANT: This is the old Data Mining forum.
I keep it online so that you can read the old messages.
Please post your new messages in the new forum: https://forum2.philippe-fournier-viger.com/index.php
contentious in Decision Tree
Posted by:
Nail
Date: July 30, 2019 11:52AM
In Decision Tree how we get to know the range of contentious attribute .
As in the image below it is written >80 nand <80
As in the image below it is written >80 nand <80
Re: contentious in Decision Tree
Posted by:
webmasterphilfv
Date: July 31, 2019 05:11AM
Let say that you want to build a decision tree using a purity measure such as GINI.
If you want to split using some ranges of values for some continuous attribute such as age > 80 in a decision tree, a simple way is to calculate the GINI measures for different split:
age > 80 / age <= 80
age > 75 / age <= 75
age > 70 / age <= 70
...
Then, you choose the best split. For example if age > 70 / age <= 70 allows to obtain the best GINI value, then you choose this.
HOpe this helps
If you want to split using some ranges of values for some continuous attribute such as age > 80 in a decision tree, a simple way is to calculate the GINI measures for different split:
age > 80 / age <= 80
age > 75 / age <= 75
age > 70 / age <= 70
...
Then, you choose the best split. For example if age > 70 / age <= 70 allows to obtain the best GINI value, then you choose this.
HOpe this helps