  Applied ontology is a relatively new field which aims to apply theories and
methods from diverse disciplines such as philosophy, cognitive science,
linguistics and formal logics to perform or improve domain-specific tasks. To
support the development of effective research methodologies for applied
ontology, we critically discuss the question how its research results should be
evaluated. We propose that results in applied ontology must be evaluated within
their domain of application, based on some ontology-based task within the
domain, and discuss quantitative measures which would facilitate the objective
evaluation and comparison of research results in applied ontology.
