Fundamentals of database systems (2nd ed.)
Fundamentals of database systems (2nd ed.)
Learning SQL with a computerized tutor
SIGCSE '98 Proceedings of the twenty-ninth SIGCSE technical symposium on Computer science education
WETAS: A Web-Based Authoring System for Constraint-Based ITS
AH '02 Proceedings of the Second International Conference on Adaptive Hypermedia and Adaptive Web-Based Systems
Automatic Problem Generation in Constraint-Based Tutors
ITS '02 Proceedings of the 6th International Conference on Intelligent Tutoring Systems
Evaluating an Animated Pedagogical Agent
ITS '00 Proceedings of the 5th International Conference on Intelligent Tutoring Systems
Using a Probabilistic Student Model to Control Problem Difficulty
ITS '00 Proceedings of the 5th International Conference on Intelligent Tutoring Systems
Tailoring Feedback by Correcting Student Answers
ITS '00 Proceedings of the 5th International Conference on Intelligent Tutoring Systems
A Practical Student Model in an Intelligent Tutoring System
ICTAI '99 Proceedings of the 11th IEEE International Conference on Tools with Artificial Intelligence
Expanding the Plausible Solution Space for Robustness in an Intelligent Tutoring System
ITS '08 Proceedings of the 9th international conference on Intelligent Tutoring Systems
Expanding the Space of Plausible Solutions in a Medical Tutoring System for Problem-Based Learning
International Journal of Artificial Intelligence in Education
Widening the Knowledge Acquisition Bottleneck for Constraint-based Tutors
International Journal of Artificial Intelligence in Education
METEOR: medical tutor employing ontology for robustness
Proceedings of the 16th international conference on Intelligent user interfaces
Modeling individual and collaborative problem solving in medical problem-based learning
UM'05 Proceedings of the 10th international conference on User Modeling
Leveraging a domain ontology to increase the quality of feedback in an intelligent tutoring system
ITS'10 Proceedings of the 10th international conference on Intelligent Tutoring Systems - Volume Part I
Building Intelligent Interactive Tutors: Student-centered strategies for revolutionizing e-learning
Building Intelligent Interactive Tutors: Student-centered strategies for revolutionizing e-learning
Fifteen years of constraint-based tutors: what we have achieved and where we are going
User Modeling and User-Adapted Interaction
Employing UMLS for generating hints in a tutoring system for medical problem-based learning
Journal of Biomedical Informatics
Clinical reasoning gains in medical PBL: an UMLS based tutoring system
Journal of Intelligent Information Systems
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The problem with most student modeling approaches is their insistence on complete and cognitively valid models of student's knowledge. Ohlsson [10] proposes Constraint-Based Modeling (CBM) as a way to overcome intractability of student modeling, by generating models that are precise enough to guide instruction, and are computationally tractable at the same time. The paper presents our experiences in building SQL-Tutor, an ITS built upon CBM. CBM is extremely computationally efficient. State constraints, which form the basis of CBM, are very expressive; we have encountered no situations where constraints were unable to diagnose student answers. The time needed to acquire, implement and test a constraint is less than times reported for the acquisition of production rules. The initial evaluation of SQL-Tutor proved the validity of design and appropriateness of CBM.