1.
a) Briefly explain how graph theory has been used to provide static metrics for the usability of an interactive web site.
[5 marks]
b) Outline the main features of a graph theoretic algorithm that can be used to assess the navigational structure of a web site. What are the principle limitations of this approach?
[10 marks]
c) A major UK Bank has recently discovered that many users are so focussed on finding their account information that they miss the links and other features that designers provide to help them navigate around the Bank's web site. As a result, staff members spend much of their time responding to telephone calls and email helping customers find information even though those customers have visited pages that include links to this information. You have been commissioned to write a brief technical report for the bank's site manager. This document will provide ten guidelines on how to address the problem of users missing important navigational information.
[12 marks]
2.
a) Describe three different metrics for subjective satisfaction with interactive web sites.
[4 marks]
b) Briefly explain why web logs cannot be relied upon as an indicator of subjective satisfaction and usability for many web sites.
[6 marks]
c) A recent survey of E-commerce usability has identified a number of different tasks that users have to perform whenever they make a purchase over the Internet:[15 marks]
3. Question on second half of the course.
[Total 25 marks]
4. Question on second half of the course.
[Total 25 marks]
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