Erratum for
Baker, R.S.J.d., Corbett, A.T., Aleven, V. (2008) Improving Contextual Models of Guessing and Slipping with a Truncated Training Set.Proceedings of the 1st International Conference on Educational Data Mining, 67-76.

In the published version of this article, three formulas had the same minor typo. They are now corrected.

Our apologies for the error.

A corrected version of this article is available online at