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Authors:
Limbourg,
Q., Vanderdonckt, J.
Title:
Comparing Task
Models for User Interface Design
Book:
The Handbook of Task Analysis for Human-Computer Interaction.
Abstract
Many task models, task analysis methods, and supporting
tools have been
introduced in the literature and are widely used in practice. With this
comes a need to understand their scopes and their differences. This chapter
provides a thorough review of selected, significant task models along
with their method and supporting tools. For this purpose, a meta-model
of each task model is expressed as an Entity-Relationship-Attribute schema
(ERA) and discussed.
This leads to a comparative analysis of task models according to aims
and goals, discipline, concepts and relationships, expressiveness of static
and dynamic structures. Following is discussion of the model with respect
to developing life cycle steps, tool support, advantages, and shortcomings.
This comparative analysis provides a reference framework against which
task models can be understood with respect to each other. The appreciation
of the similarities and the differences allows practioners to identify
a task model that fits a situation’s given requirements. It shows
how a similar concept or relationship translates in different task usage
models.
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