Scaffolding on-line discussions with past discussions: An analysis and pilot study of pedabot

Jihie Kim, Erin Shaw, Sujith Ravi, Erin Tavano, Aniwat Arromratana, Pankaj Sarda

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

9 Scopus citations

Abstract

PedaBot is a new discussion scaffolding application designed to aid student knowledge acquisition, promote reflection about course topics and encourage student participation in discussions. It dynamically processes student discussions and presents related discussions from a knowledge base of past discussions. This paper describes the system and presents a comparative analysis of the information retrieval techniques used to respond to free-form student discussions, a combination of topic profiling, term frequency-inverse document frequency, and latent semantic analysis. Responses are presented as annotated links that students can follow and rate. We report a pilot study of PedaBot based on student viewings, student ratings, and a small survey. Initial results indicate that there is a high level of student interest in the feature and that its responses are moderately relevant to student discussions.

Original languageEnglish
Title of host publicationIntelligent Tutoring Systems - 9th International Conference, ITS 2008, Proceedings
PublisherSpringer Verlag
Pages343-352
Number of pages10
ISBN (Print)3540691308, 9783540691303
DOIs
StatePublished - 2008
Event9th International Conference on Intelligent Tutoring Systems, ITS 2008 - Montreal, QC, Canada
Duration: 23 Jun 200827 Jun 2008

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume5091 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Conference

Conference9th International Conference on Intelligent Tutoring Systems, ITS 2008
Country/TerritoryCanada
CityMontreal, QC
Period23/06/0827/06/08

Keywords

  • Discussion scaffolding
  • Information retrieval
  • On-line learning environment
  • Threaded discussion

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