~ 3 subfields of skill modelling﹕IRT, KST, BKT

In the field of skill modeling and assessment, the primary
proposals can be categorized into three main groups:
⌣ Item Response Theory (IRT), Knowledge Space Theory
(KST), and ~ use Bayesian Knowledge Tracing to estimate how likely a skill is learned (BKT)

❐ Towards a Skill-based Self-Regulated Learning Recommendation System