MobileMedia Study

COSMOS* vs COSMOS*-AO vs OO vs AO

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This webpage describes a part of the MobileMedia study and complements some results published on the Journal of Information and Software Technology (DOI). The objective of this study was to assess when aspects and components promote Product Line Architecture (PLA) stability in the presence of various types of evolutionary change. The assessment was based on conventional metric suites for change impact and modularity. This webpage presents the calculations regarding the change impact analysis.

Change impact analysis

We refer to Siegel and Castellan book called Nonparametric statistics for the behavioral science and Inferential statistics for more details about the procedures. Both Friedman and Wilcoxon analysis were based on change impact metrics.

Change impact on modules and operations

These tables show the total change impact on modules and operations from R2 to R8 for all techniques

Friedman two-way analysis of variance by ranks

The calculations for the Friedman two-way analysis of variance by ranks

Wilcoxon signed-ranks analysis

The calculations for the Wilcoxon analysis

Last update: March 30, 2010