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- W2808943522 abstract "Context. Non-functional requirements (NFRs) are not easy to elicit and formulate. Therefore, some experts advocate using templates, i.e., statement patterns with parameters and optional parts. Unfortunately, there is still scarcity of evidence showing the benefits of this approach. Objective.We aim at evaluating the usefulness of catalog of NFR templates in the context of inexperienced requirements elicitors and the effort required to maintain such catalog. Method.To investigate the usefulness of NFR templates, an experiment was conducted with 107 participants. The participants, individually or in teams, elicited NFRs based on a business case concerning an e-commerce system. To study the maintenance effort, we analyzed 2231 NFRs, 41 industrial projects to simulate the development of a catalog of NFR templates. We investigated how the characteristics of the catalog, essential from the maintenance perspective, change over a series of projects (a counterpart of elapsing time). Results.The participants using NFR templates provided NFRs that were more complete, less ambiguous, more detailed, and better from the point of view of verifiability than their counterparts using the ad hoc approach. However, the catalog of templates did not speed up the elicitation process. As regards the maintenance effort, we introduced the notion of mature catalog. In our case, ca. 40 projects were needed to make the catalog mature and then it contained 400 templates but less than 10% of them were used by a single project. The mature catalog subjected to the Pareto principle—about 20% of templates resulted in almost 80% of NFRs. Moreover, when updating the catalog after each project, less than 10% of templates had to be modified or added. Conclusions.Catalog of NFR templates seems useful. It increases the quality of NFRs and does not hinder elicitation speed. However, it takes time to make such catalog mature." @default.
- W2808943522 created "2018-06-29" @default.
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- W2808943522 date "2018-11-01" @default.
- W2808943522 modified "2023-10-04" @default.
- W2808943522 title "An empirical study on catalog of non-functional requirement templates: Usefulness and maintenance issues" @default.
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- W2808943522 doi "https://doi.org/10.1016/j.infsof.2018.06.009" @default.
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