NullPointerException when doing logistic regression wrapped under Binary2Poly
I am working on Rapid Miner to do some analysis for my master's thesis and I am badly stuck when I try to implement logistic regression wrapped under Polynomial to Binomial Classification. My dataset has 3 classes. It has 12 attributes, 532 rows. I have specified the name(of movies) as id, and the class as Label. Except for these two, all other attributes are numeric.
When I try to run the program, I get an error as below:
SEVERE: Here: Process (Process)
subprocess 'Main Process'
+- Retrieve (Retrieve)
+- Validation (X-Validation)
| +- Polynominal by Binominal Classification (Polynominal by Binominal Classification)
subprocess 'Learning Process'
| +- Replace Missing Values (Replace Missing Values)
| +- Logistic Regression (Logistic Regression)
==> +- Apply Model (Apply Model)
+- Performance (Performance (Classification))
Sep 21, 2013 10:53:11 PM SEVERE: java.lang.NullPointerException