I'm having this problem.....
I wanted to use the Decision Tree to show a result..... after i configure the Mining Structures..... and set all the input.... my decision tree shows only until level 2..... i have 3 input and one PredictOnly column.....where is the other input?
Say.... i have House Owner, Marital Status, Num Cars Owned and Number Of Children(PredictOnly)
my Tree only shows All - > Marital Status when i input all 3 together...... the other 2 doesn't seems to show.
wat should i do? my database in SQL Server and the other keys are all correct and deploying finely.....why is this happening.....?
i'm a newbie in this software.......so any pro here can plz help me if there's actually something that i might have missed out along the way.......
Thank you again.........
It's likely that after the split on Marital Status, the other two inputs don't have enough information to cause the model to split any further. The inputs you provide are "suggestions" for the algorithms to look for information. If there is no information there, it won't find anything. Other algorithms, such as Naive Bayes, treat all inputs independently and simultaneously, so you may see even very small correlations. Decision Trees, however, needs to have a certain weight of evidence before it will decide to split.
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