• Corpus ID: 218900595

VarFA: A Variational Factor Analysis Framework For Efficient Bayesian Learning Analytics

  title={VarFA: A Variational Factor Analysis Framework For Efficient Bayesian Learning Analytics},
  author={Zichao Wang and Yi Gu and Andrew S. Lan and Richard Baraniuk},
We propose VarFA, a variational inference factor analysis framework that extends existing factor analysis models for educational data mining to efficiently output uncertainty estimation in the model's estimated factors. Such uncertainty information is useful, for example, for an adaptive testing scenario, where additional tests can be administered if the model is not quite certain about a students' skill level estimation. Traditional Bayesian inference methods that produce such uncertainty… 

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