Meta-model of Spago4Q, the open source platform to measure, analyze and monitor quality of products, processes and services

Spago4Q meta-model follows the Meta-Object Facility (MOF) approach, proposed by Object Management Group (OMG). In Spago4Q, the three major meta-model components are the Process, Measurement and Assessment meta-models.

The Process meta-model has been defined starting from a simplified version of the OMG's Software Process Engineering Meta-model (SPEM) specifications, which describes a concrete software development process.

The Measurement meta-model has been defined following the Goal-Question-Metric (GQM) paradigm. Following GQM principles, the meta-model defines three main entities:

  • measurableConcept: the goals of the analysis (i.e. the concepts to measure)
  • measurableAttribute: the attributes to be measured for evaluating a specific goal
  • KPI (Key Process Indicator) and metric: the operations to apply on measured attributes

The Assessment meta-model fully supports both Capability Maturity Model Integration (CMMI) and ISO 9001:2000 assessment frameworks. For example, the CMMI practices are monitored by specific Key Performance Indicators (KPIs) and metrics, examining their values according to predefined thresholds. Spago4Q gives a reliable snapshot of company state and allows managers and assessors to monitor the adherence of CMMI goals.

By means of the meta-model, users can represent:

  • specific development processes or services
  • Quality models or assessment frameworks (CMMI, ISO 9001:2000, ISO9126, QualiPSo OMM)
  • KPIs and metrics related to Quality models for the assessment of products, processes and services

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