User Expressions Translated into Requirements
Grounding the development of mobile and ubiquitous services on actual needs
and behaviors of users, rather than on designers' intuition, is a well-established tradition.
However, gathering data about users in different contexts usually results in large amounts
of data that have to be analyzed and translated into requirements. This crucial activity and
its outcome are often shaped by the preconceptions of the developers or researchers.
Despite this subjectivity, the translation process is seldom transparent. The aim of this
paper, therefore, is to contribute to the field by presenting a process for translating user
expressions into needs and later into requirements using Reiss' taxonomy of human needs.
By adopting this process of translation, we were able to identify two hierarchical levels of
needs: needs of a service and needs in a service. These two levels provide a transparent
bridge between user expressions and system requirements.
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