REFSQ 2023
Mon 17 - Thu 20 April 2023 Barcelona, Spain

Context: Some believe that Requirements Engineering (RE) for a computer-based system (CBS) should be done up front, producing a complete requirements specification before any of the CBS’s software (SW) is written. Problem: A common complaint is that (1) new requirements never stop coming; so upfront RE goes on forever with an ever growing scope. However, data show that (2) the cost to modify written SW to include a new requirement is at least 10 times the cost of writing the SW with the requirement included from the start; so upfront RE saves development costs, particularly if the new requirement is one that was needed to prevent a failure of the implementation of a requirement already included in the scope. The scope of a CBS is the set of requirements that drive its implementation. Hypothesis: We believe that both (1) and (2) are correct, but each is about a different category of requirements, (1) scope determininG (G) or (2) scope determineD (D), respectively. Past Work: Re-examination of the reported data of some past case studies through the lens of these categories indicates that when a project failed, a large number of its defects were due to missing D requirements, and when a project succeeded, the project focused its RE on finding all of its D requirements. Conclusions: The overall aim of the future research is to empirically show that focusing RE for a chosen scope, including for a sprint in an agile development, on finding all and only the D requirements for the scope, while deferring any G requirements to later releases or sprints, allows upfront RE (1) that does not go on forever, and (2) that discovers all requirements whose addition after implementation would be wastefully expensive, wasteful because these requirements are discoverable during RE if enough time is devoted to looking for them.

Tue 18 Apr

Displayed time zone: Brussels, Copenhagen, Madrid, Paris change

14:00 - 15:30
Session R3 - Requirements Communication and Conceptualization IIResearch Papers at Sitges
Chair(s): Eric Knauss Chalmers | University of Gothenburg
Scientific evaluation
Requirements Engineering Issues Experienced by Software Practitioners: A Study on Stack Exchange
Research Papers
P: Rodrigo Spinola Virginia Commonwealth University, A: Sávio Freire Federal Institute of Ceará, A: Felipe Gomes Federal University of Bahia, A: Larissa Barbosa Federal University of Bahia, A: Thiago Souto Mendes Federal Institute of Bahia, A: Galdir Reges Salvador University, A: Rita S. P. Maciel Federal University of Bahia, A: Manoel Mendonça Federal University of Bahia, D: Victoria Sakhnini University of Waterloo
Research preview
Bringing Stakeholders Along for the Ride: Towards Supporting Intentional Decisions in Software Evolution
Research Papers
P: Alicia M. Grubb Smith College, D: Paola Spoletini Kennesaw State University, D: Rodrigo Spinola Virginia Commonwealth University
Research preview
Scope Determined (D) and Scope Determining (G) Requirements: A New Categorization of Functional Requirements
Research Papers
P: Victoria Sakhnini University of Waterloo, A: Dan Berry University of Waterloo, A: Marcia Lucena Universidade Federal do Rio Grande do Norte, A: Abhishek Dhakla University of Waterloo, D: Paola Spoletini Kennesaw State University