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| Bayesian Knowledge Tracing× | Educational Data Mining× | |
|---|---|---|
| Campo | Education | Education |
| Famiglia | Machine learning | Machine learning |
| Anno di origine≠ | 1994 | 2009 |
| Ideatore≠ | Albert Corbett & John Anderson | Educational data mining community (Baker, Yacef, Romero, Ventura) |
| Tipo≠ | Two-state hidden Markov model of latent skill mastery from response sequences | Application of data-mining and machine-learning methods to educational data |
| Fonte seminale≠ | Corbett, A. T., & Anderson, J. R. (1994). Knowledge tracing: Modeling the acquisition of procedural knowledge. User Modeling and User-Adapted Interaction, 4(4), 253–278. DOI ↗ | Baker, R. S. J. d., & Yacef, K. (2009). The state of educational data mining in 2009: A review and future visions. Journal of Educational Data Mining, 1(1), 3–17. link ↗ |
| Alias | BKT, Knowledge Tracing (Corbett-Anderson), Hidden Markov Knowledge Tracing, Skill Mastery Tracing | EDM, Mining Education Data, Data Mining in Education, Learner Data Mining |
| Correlati≠ | 3 | 4 |
| Sintesi≠ | Bayesian knowledge tracing (BKT) is a model that estimates, after each problem a student attempts, the probability that the student has mastered the underlying skill. Introduced by Corbett and Anderson for intelligent tutoring systems, it is a two-state hidden Markov model: the latent variable is whether the skill is learned or not, and observed correct/incorrect responses update that latent state through Bayesian inference. With just four parameters — initial knowledge, learning, slip, and guess — BKT drives the mastery decisions that tell a tutor when a student can move on. | Educational data mining (EDM) is the field that develops and applies data-mining and machine-learning methods to data generated by educational settings — clickstreams from online courses, intelligent tutoring system logs, assessment records, and student information systems. Its goal is to discover patterns that explain and predict learning: who is at risk of failing, how students work through material, which content sequences help, and what hidden skill structures underlie performance. EDM treats fine-grained learner data as a source of actionable scientific and practical insight. |
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