  This preprint specifies quality requirements for a core ontology whose
ontological elements such as terms, non-taxonomic relationships, among others,
are based on a foundational ontology. The quality requirements are represented
in a quality model that is structured in the form of a requirements tree
composed of characteristics and attributes to be measured and evaluated. An
attribute represents an atomic aspect of an entity, that is, an elementary
non-functional requirement that can be measured by a direct or indirect metric
and evaluated by an elementary indicator. In contrast, characteristics that
model less atomic aspects of an entity cannot be measured by metrics, but
rather are evaluated by derived indicators generally modeled by an aggregation
function. Therefore, this preprint shows the design of direct and indirect
metrics in addition to the design of elementary indicators, which are used to
implement measurement and evaluation activities to obtain the results of a
quality requirements tree. In particular, this document shows the applicability
of the designed metrics and indicators that are used by a evaluation and
comparison strategy. Two process core ontologies were preselected, evaluated
and compared in order to adopt strengths in the target entity named ProcessCO.
The data and information resulting from this study are also recorded, as well
as the outcomes of the revaluation after improvement of the target entity.
