C. Maria Keet

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Many types of part-whole relations have been proposed in the literature to aid the conceptual modeller to choose the most appropriate type, but many of those relations lack a formal specification to give clear and unambiguous semantics to them. To remedy this, a formal taxonomy of types of mereological and meronymic part-whole relations is presented that(More)
In recent years, several efforts have been made to enhance conceptual data modelling with automated reasoning to improve the model’s quality and derive implicit information. One approach to achieve this in implementations, is to constrain the language. Advances in Description Logics can help choosing the right language to have greatest expressiveness yet to(More)
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  • C. Maria Keet
  • 2006 IEEE International Conference on Granular…
  • 2006
Multiple different understandings and uses exist of what granularity is and how to implement it, where the former influences success of the latter with regards to storing granular data and using granularity for reasoning over the data or information. We propose a taxonomy of types of granularity and discuss for each leaf type how the entities or instances(More)
There is an assumption that ontology developers will use a top-down approach by using a foundational ontology, because it purportedly speeds up ontology development and improves quality and interoperability of the domain ontology. Informal assessment of these assumptions reveals ambiguous results that are not only open to different interpretations but also(More)
Representing parthood relations in ORM has received little attention, despite its added-value of the semantics at the conceptual level. We introduce a high-level taxonomy of types of meronymic and mereological relations, use it to construct a decision procedure to determine which type of part-whole role is applicable, and incrementally add mandatory and(More)
A purpose of a foundational ontology is to solve interoperability issues among domain ontologies and they are used for ontologydriven conceptual data modelling. Multiple foundational ontologies have been developed in recent years, and most of them are available in several versions. This has re-introduced the interoperability problem, increased the need for(More)
Representing part-whole relations and effectively using them in domain ontologies and conceptual data models poses multiple challenges. In this paper we face the issue of imposing temporal constraints on part-whole relationships, introducing a way to account for essential and immutable parts (and wholes) in addition to the usual mandatory parts (and(More)