https://communities.sas.com/t5/SAS-Data-Science/Decision-tree-applied-with-ternary-partition-of-continuous/m-p/76089#M472 The software does not support that constraint. In fact, there may be few data sets that contain candidate splits that satisfy that constraint. You may want to use the interactive tree function to explore splits and find out if that is even possible. Wed, 21 Oct 2009 21:04:16 GMT David_Duling 2009-10-21T21:04:16Z https://communities.sas.com/t5/SAS-Data-Science/Decision-tree-applied-with-ternary-partition-of-continuous/m-p/76088#M471 I have a modelling excercise where I want to apply a decision tree model to a dataset with continuous variables. The target is a binary outcome. At each node I want division into 3 cases, pure 1; mixed 1,0; and pure 0. and the next split applied to the mixed case, in the same way. The resulting tree looks like a main trunk, with one leaf on either side of each node. Is it possible to constrain the decision tree process to achive this? Sun, 18 Oct 2009 21:40:58 GMT https://communities.sas.com/t5/SAS-Data-Science/Decision-tree-applied-with-ternary-partition-of-continuous/m-p/76088#M471 monei011 2009-10-18T21:40:58Z https://communities.sas.com/t5/SAS-Data-Science/Decision-tree-applied-with-ternary-partition-of-continuous/m-p/76089#M472 The software does not support that constraint. In fact, there may be few data sets that contain candidate splits that satisfy that constraint. You may want to use the interactive tree function to explore splits and find out if that is even possible. Wed, 21 Oct 2009 21:04:16 GMT https://communities.sas.com/t5/SAS-Data-Science/Decision-tree-applied-with-ternary-partition-of-continuous/m-p/76089#M472 David_Duling 2009-10-21T21:04:16Z https://communities.sas.com/t5/SAS-Data-Science/Decision-tree-applied-with-ternary-partition-of-continuous/m-p/76090#M473 David, Thanks, I'll have a play. I've also started coding an algorithm to do it directly. Fri, 23 Oct 2009 02:40:37 GMT https://communities.sas.com/t5/SAS-Data-Science/Decision-tree-applied-with-ternary-partition-of-continuous/m-p/76090#M473 monei011 2009-10-23T02:40:37Z