QuESo-model

In this section, we describe the QuESo-model.This is composed of two types of interrelated elements: quality characteristics and measures. Quality characteristics correspond to the attributes of an open source software ecosystem that are considered relevant for evaluation.

The quality characteristics in QuESo-model have been organized in three dimensions: (1) those that relate to the platform around which the ecosystem is built, (2) those that relate to the community (or set of communities) of the ecosystem and (3) those that are related to the ecosystem as a network of interrelated elements, such as projects or companies (see Figure below).

Platform-related quality characteristics

Platform-related quality characteristics consist of the set of attributes that are relevant for the evaluation of the software platform. As a result of our SM , we have observed that the selected papers do not provide measures for evaluating open source platform-related quality characteristics. This fact may indicate that there are not significant differential issues for open source software quality with respect to generic software quality that motivates the need of specific measures.

Then, similarly as done in the QualOSS model, since a mature proposal such as ISO 25000-SQuaRE (ISO/IEC 25000, 2014) focuses on generic software quality, QuESo-model adopts directly the characteristics and sub-characteristics proposed by ISO 25000-SQuaRE and this part of the quality model is omitted in this document

Community-related quality characteristics

The QuESo-model proposal for community-related quality characteristics is based both on the set of measures identified in our SM and on the QualOSS quality model (Soto and Ciolkowski, 2009) We specifies three community characteristics, namely, maintenance capacity, sustainability and process maturity.

Ecosystem network quality characteristics

Since QualOSS does not address the network-related quality, this part of QuESo is exclusively based on the analysis of measures identified in our SM. QuESo proposes two ecosystem network-related characteristics: resource health and network health.

All publication related to the OSSECO-model are here