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Sökning: WFRF:(Andersson Carina)

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31.
  • Andersson, Carina, et al. (författare)
  • A Case Study on Quality Monitoring in a Highly Iterative Software Development Process
  • 2005
  • Ingår i: Fifth Conference on Software Engineering Research and Practice in Sweden.
  • Konferensbidrag (refereegranskat)abstract
    • This paper describes a case study on quality monitoring conducted in an industrial environment. In a highly iterative project, everything seems to happen at the same time; analysis, design and testing. In the study, data collected from three software development projects is analyzed, to investigate which characteristics are stable across projects and feature groups of the product. Design and test activities are conducted in parallel in the incremental development environment, adding features to a product base continuously. The contribution of the paper is multifold, detailing the case study methodology used with its subgoals and procedure, presenting the lessons learned from the study, and the results as such from the case study give insights into a complex development environment and the trends of the retrieved data, which e.g. are used for a defect prediction model.
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32.
  • Andersson, Carina (författare)
  • A replicated empirical study of a selection method for software reliability growth models
  • 2007
  • Ingår i: Empirical Software Engineering. - : Springer Science and Business Media LLC. - 1573-7616 .- 1382-3256. ; 12:2, s. 161-182
  • Tidskriftsartikel (refereegranskat)abstract
    • Replications are commonly considered to be important contributions to investigate the generality of empirical studies. By replicating an original study it may be shown that the results are either valid or invalid in another context, outside the specific environment in which the original study was launched. The results of the replicated study show how much confidence we could possibly have in the original study. We present a replication of a method for selecting software reliability growth models to decide whether to stop testing and release software. We applied the selection method in an empirical study, conducted in a different development environment than the original study. The results of the replication study show that with the changed values of stability and curve fit, the selection method works well on the empirical system test data available, i.e., the method was applicable in an environment that was different from the original one. The application of the SRGMs to failures during functional testing resulted in predictions with low relative error, thus providing a useful approach in giving good estimates of the total number of failures to expect during functional testing.
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33.
  • Andersson, Carina, et al. (författare)
  • A replicated quantitative analysis of fault distributions in complex software systems
  • 2007
  • Ingår i: IEEE Transactions on Software Engineering. - 0098-5589. ; 33:5, s. 273-286
  • Tidskriftsartikel (refereegranskat)abstract
    • To contribute to the body of empirical research on fault distributions during development of complex software systems, a replication of a study of Fenton and Ohlsson is conducted. The hypotheses from the original study are investigated using data taken from an environment that differs in terms of system size, project duration, and programming language. We have investigated four sets of hypotheses on data from three successive telecommunications projects: 1) the Pareto principle, that is, a small number of modules contain a majority of the faults ( in the replication, the Pareto principle is confirmed), 2) fault persistence between test phases ( a high fault incidence in function testing is shown to imply the same in system testing, as well as prerelease versus postrelease fault incidence), 3) the relation between number of faults and lines of code ( the size relation from the original study could be neither confirmed nor disproved in the replication), and 4) fault density similarities across test phases and projects ( in the replication study, fault densities are confirmed to be similar across projects). Through this replication study, we have contributed to what is known on fault distributions, which seem to be stable across environments.
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34.
  • Andersson, Carina, et al. (författare)
  • A Spiral Process Model for Case Studies on Software Quality Monitoring - Method and Metrics
  • 2007
  • Ingår i: Software Process Improvement and Practice. - 1077-4866. ; 12:2, s. 125-140
  • Tidskriftsartikel (refereegranskat)abstract
    • This article presents a spiral process model for an iterative case study on quality monitoring, conducted in an industrial environment. In a highly iterative project, everything seems to happen at the same time: analysis, design and testing. We propose a spiral process model for case studies, and present a study conducted according to the proposed process. In the study, metrics collected from three software development projects are analysed to investigate which characteristics are stable across projects and feature groups of the product. The contribution of the article is multi-fold, detailing the case study methodology used with its sub-goals and procedures. Furthermore, the article presents the metrics collected and the results as such from the case study, which gives insights into a complex development environment and the trends of the retrieved data. The analysed data serve as feedback to the project staff to facilitate identification of software process improvement. The data have also been used for defect prediction.
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35.
  • Andersson, Carina, et al. (författare)
  • An experimental evaluation of inspection and testing for detection of design faults
  • 2003
  • Ingår i: Proceedings 2003 International Symposium on Empirical Software Engineering. ISESE 2003. - 0769520022 ; , s. 174-184
  • Konferensbidrag (refereegranskat)abstract
    • The two most common strategies for verification and validation, inspection and testing, are in a controlled experiment evaluated in terms of their fault detection capabilities. These two techniques are in the previous work compared applied to code. In order to compare the efficiency and effectiveness of these techniques on a higher abstraction level than code, this experiment investigates inspection of design documents and testing of the corresponding program, to detect faults originating from the design document. Usage-based reading (UBR) and usage-based testing (UBT) were chosen for inspections and testing, respectively. These techniques provide similar aid to the reviewers as to the testers. The purpose of both fault detection techniques is to focus the inspection and testing from a user's viewpoint. The experiment was conducted with 51 Master's students in a two-factor blocked design; each student applied each technique once, each application on different versions of the same program. The two versions contained different sets of faults, including 13 and 14 faults, respectively. The general results from this study show that when the two groups of subjects are combined, the efficiency and effectiveness are significantly higher for usage-based reading and that testing tends to require more learning. Rework is not taken into account, thus the experiment indicates strong support for design inspection over testing
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37.
  • Andersson, Carina, et al. (författare)
  • Design fixations among information design students : What has been seen cannot be unseen
  • 2012
  • Ingår i: Proceedings of the 14th International Conference on Engineering and Product Design Education: Design Education for Future Wellbeing, EPDE 2012. - 9781904670360 ; , s. 159-166
  • Konferensbidrag (refereegranskat)abstract
    • This research explores the phenomenon of design fixation by studying undergraduate design students undertaking an information product design problem. The research is based on a case study, with 64 students. The students were given a design problem, and their design processes were documented in a weblog, which was analyzed jointly with handouts and slide presentations. The research suggests that the formulation of ideas in and recording of an early group brainstorming sessions may contribute to fixation of the finale design solution.
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