Reducing the Knowledge Tracing Space. - Steven Ritter 001; Thomas K. Harris; Tristan Nixon; Daniel Dickison; R. Charles Murray; Brendon Towle (EDM, 2009)

Predicting the Effects of Skill Model Changes on Student Progress. - Daniel Dickison; Steven Ritter 001; Tristan Nixon; Thomas K. Harris; Brendon Towle; R. Charles Murray; Robert G. M. Hausmann (Intelligent Tutoring Systems (2), 2010)

Avoiding Problem Selection Thrashing with Conjunctive Knowledge Tracing. - Kenneth R. Koedinger; Philip I. Pavlik Jr.; John C. Stamper; Tristan Nixon; Steven Ritter 001 (EDM, 2011)

A Method for Finding Prerequisites Within a Curriculum. - Annalies Vuong; Tristan Nixon; Brendon Towle (EDM, 2011)

Using Time Pressure to Promote Mathematical Fluency. - Steven Ritter 001; Tristan Nixon; Derek Lomas; John C. Stamper; Dixie Ching (ITS, 2012)

Simulated Students, Mastery Learning, and Improved Learning Curves for Real-World Cognitive Tutors. - Stephen E. Fancsali; Tristan Nixon; Annalies Vuong; Steven Ritter 001 (AIED Workshops, 2013)

Toward "Hyper-Personalized" Cognitive Tutors: Non-Cognitive Personalization in the Generalized Intelligent Framework for Tutoring. - Stephen Fancsali; Steven Ritter 001; John C. Stamper; Tristan Nixon (AIED Workshops, 2013)

Using Data-Driven Discovery of Better Student Models to Improve Student Learning. - Kenneth R. Koedinger; John C. Stamper; Elizabeth A. McLaughlin; Tristan Nixon (AIED, 2013)

Revealing the Learning in Learning Curves. - R. Charles Murray; Steven Ritter 001; Tristan Nixon; Ryan Schwiebert; Robert G. M. Hausmann; Brendon Towle; Stephen E. Fancsali; Annalies Vuong (AIED, 2013)

Optimal and Worst-Case Performance of Mastery Learning Assessment with Bayesian Knowledge Tracing. - Stephen Fancsali; Tristan Nixon; Steven Ritter 001 (EDM, 2013)

The Complex Dynamics of Aggregate Learning Curves. - Tristan Nixon; Stephen Fancsali; Steven Ritter 001 (EDM, 2013)

Predicting Standardized Test Scores from Cognitive Tutor Interactions. - Steven Ritter 001; Ambarish Joshi; Stephen Fancsali; Tristan Nixon (EDM, 2013)

Generalizing and Extending a Predictive Model for Standardized Test Scores Based On Cognitive Tutor Interactions. - Ambarish Joshi; Stephen Fancsali; Steven Ritter 001; Tristan Nixon; Susan R. Berman (EDM, 2014)

Better Data Beats Big Data. - Michael Yudelson; Stephen Fancsali; Steven Ritter 001; Susan R. Berman; Tristan Nixon; Ambarish Joshi (EDM, 2014)

Massively Scalable EDM with Spark. - Tristan Nixon (EDM, 2016)