Analysing discussion forum data: a replication study avoiding data contamination

Elaine Farrow, Johanna Moore, Dragan Gašević

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

8 Citations (Scopus)

Abstract

The widespread use of online discussion forums in educational settings provides a rich source of data for researchers interested in how collaboration and interaction can foster effective learning. Such online behaviour can be understood through the Community of Inquiry framework, and the cognitive presence construct in particular can be used to characterise the depth of a student's critical engagement with course material. Automated methods have been developed to support this task, but many studies used small data sets, and there have been few replication studies. In this work, we present findings related to the robustness and generalisability of automated classification methods for detecting cognitive presence in discussion forum transcripts. We closely examined one published state-of-the-art model, comparing different approaches to managing unbalanced classes in the data. By demonstrating how commonly-used data preprocessing practices can lead to over-optimistic results, we contribute to the development of the field so that the results of automated content analysis can be used with confidence.

Original languageEnglish
Title of host publicationProceedings of the 9th International Conference on Learning Analytics and Knowledge (LAK'19)
Subtitle of host publicationLearning Analytics to Promote Inclusion and Success
EditorsChristopher Brooks, Rebecca Ferguson, Ulrich Hoppe
Place of PublicationNew York NY USA
PublisherAssociation for Computing Machinery (ACM)
Pages170-179
Number of pages10
ISBN (Electronic)9781450362566
DOIs
Publication statusPublished - 2019
EventInternational Learning Analytics & Knowledge Conference 2019 - Arizona State University, Tempe, United States of America
Duration: 4 Mar 20198 Mar 2019
Conference number: 9th
https://lak19.solaresearch.org/

Publication series

NameACM International Conference Proceeding Series

Conference

ConferenceInternational Learning Analytics & Knowledge Conference 2019
Abbreviated titleLAK 2019
CountryUnited States of America
CityTempe
Period4/03/198/03/19
Internet address

Keywords

  • Cognitive presence
  • Community of inquiry
  • Data contamination
  • Replication

Cite this