Dear friends,
I am analyzing a big dataset via CHAID and the resulting tree has
dozens of terminal nodes. My question is: since I want to use these
categories in further analysis, how can I get a summarized listing
(preferably in a vector format) about the content of each category. For
example, suppose that my resulting tree was like that:
Fitted party:
[1] root
| [2] color in 0
| | [3] year in 0: 0 (n = 311, err = 49.5%)
| | [4] year in 1: 1 (n = 249, err = 35.3%)
| [5] color in 1
| | [6] size in 0: 0 (n = 159, err = 47.8%)
| | [7] size in 1:
| | | [8] price in 0: 0 (n = 127, err = 22.0%)
| | | [9] price in 1: 0 (n = 115, err = 40.9%)
So, I wished a function which could return a list of informations
like that:
terminal node 3: color = 0 and year = 0
terminal node 4: color = 0 and year = 1
terminal node 6: color = 1 and size = 0
terminal node 8: color = 1, size = 1 and price = 0
terminal node 9: color = 1, size = 1 and price = 1
For example, a matrix like that would be more than good to my goals:
term_node color year size price
[1,] 3 0 0 NA NA
[2,] 4 0 1 NA NA
[3,] 6 1 NA 0 NA
[4,] 8 1 NA 1 0
[5,] 9 1 NA 1 1
Many thanks in advance for any help,
Marcelo L. Arruda
[[alternative HTML version deleted]]