Question bank calibration using unsupervised learning of assessment performance metrics. - Sankaran Narayanan; Vamsi Sai Kommuri; N. Sethu Subramanian; Kamal Bijlani (ICACCI, 2017)

Unsupervised Learning of Question Difficulty Levels Using Assessment Responses. - Sankaran Narayanan; Vamsi Sai Kommuri; N. Sethu Subramanian; Kamal Bijlani; Nandu C. Nair (ICCSA (1), 2017)