DocumentCode :
2418473
Title :
From task-oriented to goal-oriented Web requirements analysis
Author :
Bolchini, Davide ; Mylopoulos, John
Author_Institution :
TEC Lab., Lugano Univ., Switzerland
fYear :
2003
fDate :
10-12 Dec. 2003
Firstpage :
166
Lastpage :
175
Abstract :
Task analysis has been used traditionally in HCI and CSCW to define requirements for user interfaces, Web-based or otherwise. This paper argues that a shift of paradigm is needed in Web engineering from task-oriented to goal-oriented approaches for designing applications delivering a quality user experience and achieving the objectives of the stakeholders. Task models focus on fine-grained and precisely defined user needs, thereby risking a commitment to premature design decisions. Moreover, since task analysis focuses on users doing things with the system, tasks do not capture the goals of other stakeholders who are not users. Goal-oriented methods, on the other hand, provide specific support for coping with high-level users´ and stakeholders´ goals, facilitates the exploration of design alternatives and the definition of requirements at a suitable level of abstraction. As such, goal-based techniques are more suitable for early stages of requirements analysis; task models can be used for later stages, such as detailed interaction design and usability evaluation. The paper conducts a detailed comparison of task and goal-analysis design techniques, using an ongoing project for a museum Web site to illustrate the two techniques and their relative strengths.
Keywords :
Internet; Web design; formal specification; task analysis; user interfaces; Web engineering; Web requirements analysis; Web site design; goal-analysis design; goal-oriented approach; interaction design; stakeholders; task analysis; task-analysis design; task-oriented approach; usability evaluation; user interfaces; Application software; Computer science; Design engineering; History; Human computer interaction; Information systems; Internet; Usability; User interfaces; Web page design;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Web Information Systems Engineering, 2003. WISE 2003. Proceedings of the Fourth International Conference on
Print_ISBN :
0-7695-1999-7
Type :
conf
DOI :
10.1109/WISE.2003.1254480
Filename :
1254480
Link To Document :
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