The Squale Model - A Practice-based Industrial Quality Model

International audienceISO 9126 promotes a three-level model of quality (fac- tors, criteria, and metrics) which allows one to assess qual- ity at the top level of factors and criteria. However, it is dif- ficult to use this model as a tool to increase software quality. In the Squale model, we add practices as an intermediate level between metrics and criteria. Practices abstract away from raw information (metrics, tool reports, audits) and provide technical guidelines to respect. Moreover, practice marks are adjusted using formulae to suit company development habits or exigences: for example bad marks are stressed to point to places which need more attention. The Squale model has been developed and validated over the last couple of years in an industrial setting with Air France-KLM and PSA Peugeot-Citroën

Supporting Custom Quality Models to Analyse and Compare Open-Source Software

textabstractThe analysis and comparison of open source software can be improved by means of quality models supporting the evaluation of the software systems being compared and the final decision about which of them has to be adopted. Since software quality can mean different things in different scenarios, quality models should be flexible in order to accommodate the needs of different users. Over the years several quality models have been proposed. Even though some of them are tool supported, they are not designed to be extended or customized to better accommodate the requirements of specific business contexts. In this paper, instead of having a fixed model, we propose a workflow and a tool chain to support the specification of custom quality models, which can guide the automated analysis of open source software

The Squale Model - A Practice-based Industrial Quality Model

ISO 9126 promotes a three-level model of quality (fac- tors, criteria, and metrics) which allows one to assess qual- ity at the top level of factors and criteria. However, it is dif- ficult to use this model as a tool to increase software quality. In the Squale model, we propose the adjunction of prac- tices as an intermediate level between metrics and crite- ria. Practices abstract from raw information at the source (metrics, tool reports, audits) to provide the developer with technical guidelines to respect. Moreover, practice marks can be adjusted using formulae to suit company develop- ment habits or exigences: for example bad marks can be stressed to point to places which need the most attention. Dashboards allow one to spot faulty practices and find the source elements responsible for the bad marks. The Squale model has been developed and validated over the last cou- ple of years in an industrial setting with Air France-KML and PSA Peugeot-Citroën. Over 100 projects with a total of more than seven millions lines of code have been assessed and steered using Squale

The Squale Model - A Practice-based Industrial Quality Model

International audienceISO 9126 promotes a three-level model of quality (fac- tors, criteria, and metrics) which allows one to assess qual- ity at the top level of factors and criteria. However, it is dif- ficult to use this model as a tool to increase software quality. In the Squale model, we add practices as an intermediate level between metrics and criteria. Practices abstract away from raw information (metrics, tool reports, audits) and provide technical guidelines to respect. Moreover, practice marks are adjusted using formulae to suit company development habits or exigences: for example bad marks are stressed to point to places which need more attention. The Squale model has been developed and validated over the last couple of years in an industrial setting with Air France-KLM and PSA Peugeot-Citroën