Intelligent Tutoring Systems Educational Data Mining Human-Computer Interaction Gaming the System
Ryan Baker ( Ryan Shaun Joazeiro de Baker )       baker2@exchange.tc.columbia.edu

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All tools are copyright Ryan Baker and colleagues -- they are free for any non-commercial or research use. Partial credit for this distribution also accrues to Michael Sao Pedro, Ken Koedinger, Albert Corbett, Sujith Gowda, Aatish Salvi, Martin van Velsen, and Aaron Whiting, depending on tool. (Thanks for bug reports also goes out to Jim Kan and Robson Quel). Please contact me before using for any commercial use. This code is NOT supported. Use it at your own risk, and make sure to check that data is sorted properly. You are welcome to re-distribute this code as long as proper credit is given. If you use this code for a published paper, please cite the appropriate paper listed below.

HART (Human Affect Recording Tool) (please cite Baker, Gowda, Wixon, Kalka, Wagner, Salvi, Aleven, Kusbit, Ocumpaugh, & Rossi, 2012) -- also see BROMP webpage

Bayesian Knowledge Tracing Brute Force model fitting code (please cite Baker, Corbett, Gowda, Wagner, MacLaren, Kauffman, Mitchell, & Giguere, 2010)

DataShop Feature Distillation (please cite Baker, Corbett, Koedinger, & Roll, 2008)

Gaming Detector (please cite Baker & de Carvalho, 2008) and Off-Task Behavior Detector (please cite Baker, 2007)

Models of Guessing and Slipping (please cite Baker, Corbett, & Aleven, 2008)

A'/AUC Code: Code for computing A'/AUC that does not fail for cases where multiple data points have same confidence (paper in preparation); also can compare A'/AUC across models without violating independence assumption (please cite Baker, Corbett, & Aleven, 2008) (version 4, November 20, 2013)

Quantitative Field Observation Motivational Modeling Interaction Design Psychometric Machine-Learned Models