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The ISRE method for analyzing system requirements with virtual prototypes
Author(s) -
Sutcliffe Alistair,
Gault Brian
Publication year - 2004
Publication title -
systems engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.474
H-Index - 50
eISSN - 1520-6858
pISSN - 1098-1241
DOI - 10.1002/sys.20002
Subject(s) - usability , computer science , virtual prototyping , cognitive walkthrough , requirements analysis , software engineering , virtual reality , human–computer interaction , software walkthrough , systems engineering , engineering , software , simulation , usability engineering , software system , operating system , software construction
Virtual prototyping is a useful approach for refining requirements and testing designs in systems engineering; however, use of virtual reality technology can cause usability problems which can be interpreted as “false positive” requirements errors. The ISRE method guides the analysis of problems encountered during the testing of virtual prototypes and helps assign causes to either genuine design defects or usability issues with Virtual Reality (VR) technology. The method consists of techniques for walkthrough testing, testing with users, causal analysis of observed problems, and design of scenario‐based analysis sessions. A checklist of requirements questions is given, with guidance on scenario‐based testing of virtual prototypes and advice on configuring VR technology to obtain the best results from virtual prototyping sessions. The method is described and its use illustrated with a case study of validating requirements for an aircraft maintenance application. © 2004 Wiley Periodicals, Inc. Syst Eng 7: 123–143, 2004