Volume 6 - Issue 1
Quantitative Non Functional Requirements evaluation using softgoal weight
- Nobuhide Kobayashi
Nagoya University, Nagoya, Aichi 4648601 Japan
kobayashi.nobuhide@j.mbox.nagoya-u.ac.jp
- Shuji Morisaki
Nagoya University, Nagoya, Aichi 4648601 Japan
S.Morisaki.JP@ieee.org
- Noritoshi Atsumi
Nagoya University, Nagoya, Aichi 4648601 Japan
atsumi@nagoya-u.jp
- Shuichiro Yamamoto
Nagoya University, Nagoya, Aichi 4648601 Japan
syamamoto@acm.org
Keywords: Non-Functional Requirements, NFR framework, Softgoal Interdependency Graphs, softgoal weight, Attributed Goal Graph
Abstract
The goal oriented requirements analysis approaches have been introduced to compare non-functional
requirements (NFR), such as safety and security. Several approaches to manage goal attributes have
also been proposed to evaluate NFR goals quantitatively. In this paper, the quantitative weighted
softgoal is proposed based on the Softgoal Interdependency Graphs (SIG) that helps engineers evaluate
non-functional requirements. The evaluation results of the weighted SIG applications are shown
to develop non-functional requirements and choose alternative design decisions. Additionally, the
industrial case study of the weighted softgoal is shown to select the appropriate architecture decision
in an automotive software development domain.