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Easily Making IT Easy to Use

Easily Making IT Easy to Use. Robert Biddle, James Noble Victoria University of Wellington http://www.mcs.vuw.ac.nz. What is Usability?. Usability: the ease with which a user can learn to operate, prepare inputs for, and interpret outputs of a system or component. (IEEE)

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Easily Making IT Easy to Use

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  1. Easily Making IT Easy to Use Robert Biddle, James Noble Victoria University of Wellington http://www.mcs.vuw.ac.nz

  2. What is Usability? • Usability:the ease with which a user can learn to operate, prepare inputs for, and interpret outputs of a system or component. (IEEE) • Aspects: learnability, predictability, … • Factors: experience of user, frequency of use

  3. How Can We Determine Usability? • Usability Inspection • Cognitive Walkthroughs • Heuristic Inspection • Cognitive Dimensions Framework • Usability Testing • Usability Lab or In-Situ • Think-Aloud or Co-Discovery • Action and Reflection

  4. How Can We Design for Usability? • Theories • Affordance Theory, Activity Theory, … • Techniques • Task Analysis, Essential Modelling, … • Processes • User-Centred Design, Goal-Directed Design, Usage-Centred Design, …

  5. How does Usability work in theWireless World? • 1960s: The Lesson of Television • McLuhan: Print is Cold, TV is Hot • 1990s: The Lesson of the Web • Nielsen: TV is Hot, the Web is Cool

  6. How does Usability work in theWireless World? • 2000+: The Lesson of… • CellPhones? • PDAs? • WebPhones? • WAP? • GPRS? • 802.11?

  7. Recent Work at Victoria inHuman-Computer Interaction • Approach: • Usage-Centred, Object-Oriented, Agile • Technology • Perl, CGI, Tcl/Tk, Java, JSP, WAP, GPRS, 802.11 • Work with Software Engineering • Lightweight Collaborative Tools • Learn from the Humanities • Visual Corpus Analysis • Semiotics of User Interface Design

  8. Lightweight Collaborative Tools • CASE tools on web pages • Allow simple collaboration • Usable anywhere with web access • Browser independent • Inspirations: Wiki, Hotmail Browser Form WebServer DBMS HTML Servlets

  9. Lightweight Collaborative Tools: Ukase

  10. Seek: UML Sequence Diagrams (Rilla Khaled)

  11. NutCASE: UML Class Diagrams (Dan MacKay)

  12. Cliki: Custom Graphic Interaction (Donald Gordon)

  13. Lessons from Lightweight Collaborative Web Tools • Focus on users and usage • Focus on models and constraints • Domain specific work is easier to understand • Shared state feeds groupware • Less is enough • Less is more

  14. Excel Spreadsheet Corpus Analysis (Daniel Ballinger)

  15. Semiotics of UI Design (Pippin Barr) Iconic: Resemblance Indexical: Causality Symbolic

  16. Work in Progress • Lightweight Wireless Collaboration • Wireless Usability Evaluation • Visual Interaction Analysis • Software Semiotics

  17. Easily Making IT Easy to Use Robert Biddle, James Noble Victoria University of Wellington http://www.mcs.vuw.ac.nz

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