I have big data set which is split into train and validation set (in separate tables in db/data source view). What I want to do is to make a decision tree and then test it with external data set. After specifying inputs and external data set I proceed with
testing. Results are kinda strange - lift chart is flat line at 0, while classification matrix look like this:
Counts for 'DT' on [x]
When I run mining model prediction (probability prediction of attribute x based on prediction join between trained mining model and external test set) I get correct output (for each sample there is calculated probability that attribute x will be true).
Does anyone have an idea why there are missing values in classification matrix/lift chart, but I can successfully run prediction query?
ps - I am working with SQL Server 2008R2
Thanks in advance
Edited byGoran FWednesday, November 27, 2013 9:58 AM
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