Within the information systems field, the task of conceptual modeling involves building a
representation of selected phenomena in some domain. High-quality conceptual modeling …

The main objective of this thesis is to contribute to the theory of Conceptual Modeling by
proposing ontological foundations for structural conceptual models. Conceptual Modeling is …

Abstract The Unified Foundational Ontology (UFO) was developed over the last two decades
by consistently putting together theories from areas such as formal ontology in philosophy …

This paper describes a long-term research program on develo** ontological foundations
for conceptual modeling. This program, organized around the theoretical background of the …

Abstract Types are fundamental for conceptual modeling and knowledge representation,
being an essential construct in all major modeling languages in these fields. Despite that …

Due to the rapidly evolving medical, technological, and technical possibilities, surgical
procedures are becoming more and more complex. On the one hand, this offers an …

The digitalization of human society continues at a relentless rate. However, to develop
modern information technologies, the increasing complexity of the real-world must be …

Foundational ontologies provide the basic concepts upon which any domain-specific
ontology is built. This paper presents a new foundational ontology, UFO, and shows how it …

Organizations' increasing reliance on externally produced information, such as online user-
generated content (UGC) and crowdsourcing, challenges common assumptions about …

UML class diagrams can be used as a language for expressing a conceptual model of a
domain. In a series of papers [1, 2, 3] we have been using the General Ontological …