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Why, What, and How to Log? Lessons from LISTEN

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Why, What, and How to Log? Lessons from LISTEN. Carnegie Mellon. Project LISTEN. Jack Mostow Carnegie Mellon University. Joseph E. Beck Worcester Polytechnic Institute. Why to log:. Tutoring. Reporting. Browsing. What to log:. Environment Raw input

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Why, What, and How to Log?

Lessons from LISTEN

Carnegie Mellon



Jack Mostow

Carnegie Mellon University

Joseph E. Beck

Worcester Polytechnic Institute

Why to log:




What to log:


Raw input

Interpreted input

Student model

Tutor decisions


Tutor output

Thou shalt not file; log to a database.

Log user, computer, and start time.

Include end time.

Index user, computer, and start time.

Index thy parent to keep it handy.

How to log:

  • Design databases topool data from several servers.
  • Log each year’s data to its own database.
  • Log each type of event to its own table.
  • Name fields consistently in and across databases.
  • Log non-events carefully.

This work was supported in part by the National Science Foundation under ITR/IERI Grant No. REC-0326153 and in part by the Institute of Education Sciences, U.S. Department of Education, through Grants R305B070458, R305A080157, and R305A080628 to Carnegie Mellon University. The opinions expressed are those of the authors and do not necessarily represent the views of the Institute, the U.S. Department of Education, or the National Science Foundation. We thank the educators, students, and members of Project LISTEN who have helped generate, log, and analyze our data.