Section: New Results

Software Quality

Participants : Stéphane Ducasse, Simon Denier, Nicolas Anquetil, Jannik Laval, Hani Abdeen.

ISO 9126 promotes a three-level model of quality (factors, criteria, and metrics) which allows one to assess quality at the top level of factors and criteria. However, it is difficult 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 abide by. Moreover, practice marks may be adjusted using formulae to suit a company's 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 [78] [23] , [33] .

MoQam.

The Qualixo model has been originally implemented on top of the Java platform. An implementation of this model, named MoQam (Moose Quality Assessment Model), is under development in the Moose open-source and free reengineering environment. A first experiment has been conducted  [78] . Exporters from Moose to the Squale software are under development.

Cohesion Metric Assessment.

We are assessing the metrics and practices used originally in the Qualixo model. We are also compiling a number of metrics for cohesion and coupling assessment. We want to assess for each of these metrics their relevance in a software quality setting [34] .