%0 Conference Paper %B OSS2009: Open Source Ecosystems: Diverse Communities Interacting (IFIP 2.13) %D 2009 %T Domain Drivers in the Modularization of FLOSS Systems %A Capiluppi, Andrea %X The classification of software systems into types has been achieved in the past by observing both their specifications and behavioral patterns: the SPE classification, for instance, and its further supplements and refinements, has identified the S-type (i.e., fully specified), the P-type (i.e., specified but dependent on the context) and the E-type (i.e., addressing evolving problems) among the software systems. In order to detect types, and establish similarities, among Free/Libre/Open Source Software (FLOSS) systems, this paper considers three modular characteristics (functions, files and folders) and their evolution: how they are evolving with size, if they are constant across systems, and whether recurring evolutionary patterns are observed. Using these various-grained characteristics,a set of models for the evolution of modularization are extracted from evolving systems, and then used to extract similarities and types from a wide sample of FLOSS projects. This paper provides three contributions: first, it shows that several models are needed to encompass the variety of modularization patterns; second, it provides three types of models (uni-variate, bi-variate and tri-variate) for the evolution of modularization, with significant goodness-of-fit’s. Finally, it shows that two of these patterns alone can interpolate the modular characteristics of the vast majority of a random choice of FLOSS projects. %B OSS2009: Open Source Ecosystems: Diverse Communities Interacting (IFIP 2.13) %S IFIP Advances in Information and Communication Technology %I Springer %V 299/2009 %P 3 - 19 %8 2009/// %G eng %& 3 %R http://dx.doi.org/10.1007/978-3-642-02032-2_3 %> https://flosshub.org/sites/flosshub.org/files/Domain%20Drivers%20in%20the%20Modularization.pdf