Although a considerable degree of precision has been introduced both into the formulation and the discussion of ontological theories by the use of formal methods there is still a remarkable indefiniteness about foundational issues. In particular it is not clear what an ontological category is and why we regard something as an ontological category. This is amazing given that the notion of ontological category is in fact the most basic of the whole of ontology: it is what this discipline is (...) about. (shrink)

Despite their recent development, geo-ontologies represent a complicated conundrum for the different experts involved in their design. Computer scientists use ontologies for describing the meaning of data and their semantics in order to make information resources built for humans understandable also for artificial agents. Geographers pursue conceptualizations that describe the domain of interest in a way that should be accessible, informative, and complete for their final recipients. In this context, philosophers are not required to sketch the historical background of ontology. (...) Rather, they should offer conceptual solutions for carving nature at the joints and choosing how best to categorize and classify the different entities belonging to the geographical domain in question. Accordingly, the aim of this paper is to combine assumptions and requirements coming from these different areas of research in order to show what different categories might potentially complete the current domain of geo-ontologies. (shrink)

The current (still limited) use of the notion of informativeness in the domain of information system ontologies seems to indicate that such ontologies are informative if and only if they are understandable for their final recipients. This paper aims at discussing some theoretical issues emerging from that use which, as we will see, connects the informativeness of information system ontologies to their representational primitives, domains of knowledge, and final recipients. Firstly, we maintain that informativeness interacts not only with the actual (...) representational primitives, but also with their variability over time. Secondly, we discuss the correspondence between representational primitives and domains of knowledge of those ontologies. Finally, we explore the possibility of an epistemological discrepancy between human beings and software systems on the understanding of ontological contents. (shrink)

In this paper, I discuss how to distinguish between ontological categories and ordinary categories. Using an argument against van Inwagen’s proposed account of what makes a category ontological as a springboard, I argue that if ontological categories are modally robust, then ontological categories need to be understood hyperintensionally. This conclusion opens up a wide range of new ways to define ‘ontological category’, and I close by briefly outlining one such way in order to illustrate the advantages of embracing hyperintensionality in (...) this debate. (Published Open Access). (shrink)