User operations as language elements: measuring usability and user competence through redundancy

  • Authors:
  • Tim Comber;John R. Maltby

  • Affiliations:
  • Southern Cross University, Coffs Harbour, Australia;Southern Cross University, Lismore, Australia

  • Venue:
  • CHINZ '03 Proceedings of the 4th Annual Conference of the ACM Special Interest Group on Computer-Human Interaction
  • Year:
  • 2003

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Abstract

This paper introduces a new sequential data analysis technique for graphical user interfaces (GUIs) based upon the communication theory of Shannon. Shannon's entropy equation is applied to a word processor "language" for 26 users and a language entropy value is obtained for each. This value is correlated with metrics associated with experience, knowledge and percentage of task completed. The results show a sufficiently high correlation (up to 62% at a significance of