The discussion are in the last two slides of PPT
two other related paper are ：
Wyse, A. E., & Hao, S. (2012). An evaluation of item response theory classification accuracy and
consistency indices. Applied Psychological Measurement, 36, 602-624
Lee, W. (2010). Classification consistency and accuracy for complex assessments using item response
theory. Journal of Educational Measurement, 47, 1-17.