What's in a step? Toward general, abstract representations of tutoring system log data

Kurt VanLehn, Kenneth R. Koedinger, Alida Skogsholm, Adaeze Nwaigwe, Robert G.M. Hausmann, Anders Weinstein, Benjamin Billings

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Scopus citations


The Pittsburgh Science of Learning Center (PSLC) is developing a data storage and analysis facility, called DataShop. It currently handles log data from 6 full-year tutoring systems and dozens of smaller, experimental tutoring systems. DataShop requires a representation of log data that supports a variety of tutoring systems, atheoretical analyses and theoretical analyses. The theory-based analyses are strongly related to student modeling, so the lessons learned in developing the DataShop's representation may apply to student modeling in general. This report discusses the representation originally used by the DataShop, the problems encountered, and how the key concept of "step" evolved to meet these challenges.

Original languageEnglish (US)
Title of host publicationUser Modeling 2007 - 11th International Conference, UM 2007, Proceedings
PublisherSpringer Verlag
Number of pages5
ISBN (Print)9783540730774
StatePublished - 2007
Externally publishedYes
Event11th International on User Modeling Conference, UM 2007 - Corfu, Greece
Duration: Jun 25 2007Jun 29 2007

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume4511 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349


Conference11th International on User Modeling Conference, UM 2007


  • Educational data mining
  • Student modeling
  • Tutoring systems

ASJC Scopus subject areas

  • Theoretical Computer Science
  • General Computer Science


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