Defining Utility Functions for Multi-Stakeholder Self-Adaptive Systems
Rebekka Wohlrab and
David Garlan.
In Proceedings of the 27th International Working Conference on Requirements Engineering: Foundation for Software Quality, Essen, Germany (Virtual), 12-15 April 2021.
Online links:   Plain Text
Abstract
| [Context and motivation:] For realistic self-adaptive systems,
multiple quality attributes need to be considered and traded off
against each other. These quality attributes are commonly encoded in
a utility function, for instance, a weighted sum of relevant objectives.
[Question/problem:] The research agenda for requirements engineering
for self-adaptive systems has raised the need for decision-making
techniques that consider the trade-offs and priorities of multiple objectives.
Human stakeholders need to be engaged in the decision-making
process so that the relative importance of each objective can be correctly
elicited. [Principal ideas/results:] This research preview paper
presents a method that supports multiple stakeholders in prioritizing
relevant quality attributes, negotiating priorities to reach an agreement,
and giving input to define utility functions for self-adaptive systems.
[Contribution:] The proposed method constitutes a lightweight solution
for utility function definition. It can be applied by practitioners and
researchers who aim to develop self-adaptive systems that meet stakeholders'
requirements. We present details of our plan to study the application
of our method using a case study. |
Keywords: Self-adaptation.
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