PFA, LFA and other frameworks for student modeling (ongoing)
Code Assumes there are atleast 2 students not a single student
First students are divided in two parts - based on contants.split_by_student first half - STU_FL with complete data used for training second half - STU_SL again divided in two parts - based on contants.split_by_interaction STU_SL first half is added to training and second to testing