Automatic Problem Generation in Constraint-Based Tutors
ITS '02 Proceedings of the 6th International Conference on Intelligent Tutoring Systems
Collaborative Information Filtering: A Review and an Educational Application
International Journal of Artificial Intelligence in Education
Interacting with Inspectable Bayesian Student Models
International Journal of Artificial Intelligence in Education
Expertise, Motivation and Teaching in Learning Companion Systems
International Journal of Artificial Intelligence in Education
Evaluating the REDEEM Authoring Tool: Can Teachers Create Effective Learning Environments?
International Journal of Artificial Intelligence in Education
An Intelligent Tutoring System for Entity Relationship Modelling
International Journal of Artificial Intelligence in Education
Modeling the Acquisition of Fluent Skill in Educational Action Games
UM '07 Proceedings of the 11th international conference on User Modeling
How Does Students' Help-Seeking Behaviour Affect Learning?
ITS '08 Proceedings of the 9th international conference on Intelligent Tutoring Systems
Level up: a frame work for the design and evaluation of educational games
Proceedings of the 4th International Conference on Foundations of Digital Games
Proceedings of the 2007 conference on Artificial Intelligence in Education: Building Technology Rich Learning Contexts That Work
Evaluating and improving adaptive educational systems with learning curves
User Modeling and User-Adapted Interaction
Intelligent tutoring systems, educational data mining, and the design and evaluation of video games
ITS'10 Proceedings of the 10th international conference on Intelligent Tutoring Systems - Volume Part II
In search of learning: facilitating data analysis in educational games
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
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Measuring the efficacy of ITS can be hard because there are many confounding factors: short, well-isolated studies suffer from insufficient interaction with the system, while longer studies may be affected by the students' other learning activities. Coarse measurements such as pre-and post-testing are often inconclusive. Learning curves are an alternative tool: slope and fit of learning curves show the rate at which the student learns, and reveal how well the system model fits what the student is learning. The downside is that they are extremely sensitive to changes in the system's setup, which arguably makes them useless for comparing different tutors. We describe these problems in detail and our experiences with them. We also suggest some other ways of using learning curves that may be more useful for making such comparisons.