jamovi

I am using the decision tree analysis under machine learning. The model provides a confusion table on the "test set", but there is no mention of other sets used, i.e. a training set. So does this model not use a training set? Where do the predictions come from? And how about the decision tree, is it also created on the current dataset, without utilizing a training set?

Hi Gilmar

Are you using snowCluster module? If you want to get the results of training set, you can use Machine Learning analysis within snowCluster module.

If you want to get the results of training set within decision tree analysis, I will update it soon.

Best Regards
Seol

Hi Seol,

Thank you! I mostly want to understand where does the training set the decision tree uses comes from. If it comes from pre designated set, how do we know this set even fits the test set. Or perhaps does it train on a randomized subset of the test set?

it's a random sub-sample from your own sample

Hi Gilmar

For more information, see the following sites: https://rpubs.com/njvijay/14899

Best
Seol