The authors visualized correctness of the predictions with respect to particular skills for one student using the ASSISTments 2009-2011 dataset. Even though after visualizations it was found that the results were intuitively correct like the value after correctly solving a problem with a particular skill increased the value of correctly solving another problem that included that skill, there were cases when after incorrectly solving a problem the value of correctly solving the problem which included that skill still increased. This is the same problem that was in case of DKT models which needs to be addressed.