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• W1512259715 abstract "This thesis introduces a new sequential data analysis technique for graphical user interfaces (GUIs) based upon the communication theory of Shannon. This study addresses two research questions: Research Question 1: Can an entropy analysis of a sequence of operations be used to estimate the quality of the user‟s work? Research Question 2: Can an entropy analysis of a sequence of operations be used to detect usability problems? Shannon‘s entropy equation is applied to a word processor ―language‖ for 24 users and a language entropy value is obtained for each. This value is correlated with metrics associated with experience, skill, knowledge and percentage of task completed. The results show a sufficiently high correlation to justify the use of language entropy as an independent user competencey and/or application usability metric. It is suggested that new GUI applications be built (or existing ones patched) to provide an automated entropy ―score‖ for user sessions. The advantage is that a user‘s language entropy can be automatically determined during a normal work session, negating the need for costly, labour intensive and time-consuming methods such as interviews, questionnaires and other usability protocols. An argument is presented to (a) incorporate the entropy score into user-centred design and evaluation sessions as a new usability metric, and (b) use the score as a measure of the effectiveness of user training and the degree of user competence when undertaking GUI software tasks. LIST OF PUBLICATIONS Comber, T. & J. R. Maltby 1994, A Formal Method for Evaluating GUI Screens‘, in Proceedings ACIS'94 Doctoral Consortium, Melbourne, Australia, Dept. of Information Services, Monash, Melbourne, pp. Group F. Comber, T. & J. R. Maltby 1994, Screen complexity and user design preference in windows applications‘, in Proceedings of OZCHI'94, Melbourne, Australia, CHISIG, pp. 133137. Comber, T. & J. R. Maltby 1995, Evaluating usability of screen designs with layout complexity‘, in Proceedings of OZCHI'95, Wollongong, Australia, CHISIG, pp. 175178. Comber, T. & Maltby J. 1996, Investigating layout complexity‘, in Computer Aided Design of User Interfaces: Proceedings of CADUI'96, Namur, Presses Universitaires de Namur, Namur, Belgium, pp. 209-227. Comber, T. & Maltby J., User operations as language elements: measuring usability and user competence through redundancy‘, in Proceedings of CHINZ‟03, Dunedin, New Zealand, ACM SIGCHI-NZ, pp.57-61." @default.
• W1512259715 created "2016-06-24" @default.
• W1512259715 creator A5070668431 @default.
• W1512259715 date "2010-01-01" @default.
• W1512259715 modified "2023-09-26" @default.
• W1512259715 title "An analysis of entropy, redundancy and complexity in graphical user interfaces" @default.
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