[R] C50 package in R

2013-04-26 Thread Indrajit Sen Gupta
Hi All, I am trying to use the C50 package to build classification trees in R. Unfortunately there is not enought documentation around its use. Can anyone explain to me - how to prune the decision trees? Regards, Indrajit [[alternative HTML version deleted]]

Re: [R] C50 package in R

2013-04-26 Thread Max Kuhn
There isn't much out there. Quinlan didn't open source the code until about a year ago. I've been through the code line by line and we have a fairly descriptive summary of the model in our book (that's almost out): http://appliedpredictivemodeling.com/ I will say that the pruning is mostly

Re: [R] C50 package in R

2013-04-26 Thread Indrajit Sen Gupta
Thanks Max, I have been able to figure out the following options so far: 1. The winnow = TRUE option in the control statement 2. CF = . I have no clue as to how this works 3. nGlobalPruning = TRUE 4. minCases = Only the 4th one is simple to understand. The rest are a bit vague as to