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  • 1.
    Irshad, Mohsin
    et al.
    Blekinge Institute of Technology, Faculty of Computing, Department of Software Engineering.
    Petersen, Kai
    Blekinge Institute of Technology, Faculty of Computing, Department of Software Engineering.
    Poulding, Simon
    Blekinge Institute of Technology, Faculty of Computing, Department of Software Engineering.
    A systematic literature review of software requirements reuse approaches2018In: Information and Software Technology, ISSN 0950-5849, E-ISSN 1873-6025, Vol. 93, no Jan, p. 223-245Article in journal (Refereed)
    Abstract [en]

    Context: Early software reuse is considered as the most beneficial form of software reuse. Hence, previous research has focused on supporting the reuse of software requirements. Objective: This study aims to identify and investigate the current state of the art with respect to (a) what requirement reuse approaches have been proposed, (b) the methods used to evaluate the approaches, (c) the characteristics of the approaches, and (d) the quality of empirical studies on requirements reuse with respect to rigor and relevance. Method: We conducted a systematic review and a combination of snowball sampling and database search have been used to identify the studies. The rigor and relevance scoring rubric has been used to assess the quality of the empirical studies. Multiple researchers have been involved in each step to increase the reliability of the study. Results: Sixty-nine studies were identified that describe requirements reuse approaches. The majority of the approaches used structuring and matching of requirements as a method to support requirements reuse and text-based artefacts were commonly used as an input to these approaches. Further evaluation of the studies revealed that the majority of the approaches are not validated in the industry. The subset of empirical studies (22 in total) was analyzed for rigor and relevance and two studies achieved the maximum score for rigor and relevance based on the rubric. It was found that mostly text-based requirements reuse approaches were validated in the industry. Conclusion: From the review, it was found that a number of approaches already exist in literature, but many approaches are not validated in industry. The evaluation of rigor and relevance of empirical studies show that these do not contain details of context, validity threats, and the industrial settings, thus highlighting the need for the industrial evaluation of the approaches. © 2017 Elsevier B.V.

  • 2.
    Irshad, Mohsin
    et al.
    Blekinge Institute of Technology, Faculty of Computing, Department of Software Engineering.
    Torkar, Richard
    Petersen, Kai
    Blekinge Institute of Technology, Faculty of Computing, Department of Software Engineering.
    Afzal, Wasif
    Capturing cost avoidance through reuse: Systematic literature review and industrial evaluation2016In: ACM International Conference Proceeding Series, ACM Press, 2016, Vol. 01-03-June-2016Conference paper (Refereed)
    Abstract [en]

    Background: Cost avoidance through reuse shows the benefits gained by the software organisations when reusing an artefact. Cost avoidance captures benefits that are not captured by cost savings e.g. spending that would have increased in the absence of the cost avoidance activity. This type of benefit can be combined with quality aspects of the product e.g. costs avoided because of defect prevention. Cost avoidance is a key driver for software reuse. Objectives: The main objectives of this study are: (1) To assess the status of capturing cost avoidance through reuse in the academia; (2) Based on the first objective, propose improvements in capturing of reuse cost avoidance, integrate these into an instrument, and evaluate the instrument in the software industry. Method: The study starts with a systematic literature review (SLR) on capturing of cost avoidance through reuse. Later, a solution is proposed and evaluated in the industry to address the shortcomings identified during the systematic literature review. Results: The results of a systematic literature review describe three previous studies on reuse cost avoidance and show that no solution, to capture reuse cost avoidance, was validated in industry. Afterwards, an instrument and a data collection form are proposed that can be used to capture the cost avoided by reusing any type of reuse artefact. The instrument and data collection form (describing guidelines) were demonstrated to a focus group, as part of static evaluation. Based on the feedback, the instrument was updated and evaluated in industry at 6 development sites, in 3 different countries, covering 24 projects in total. Conclusion: The proposed solution performed well in industrial evaluation. With this solution, practitioners were able to do calculations for reuse costs avoidance and use the results as decision support for identifying potential artefacts to reuse.

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