Yearb Med Inform 2013; 22(01): 132-146
DOI: 10.1055/s-0038-1638845
Original Article
Georg Thieme Verlag KG Stuttgart

Formal Ontologies in Biomedical Knowledge Representation

S. Schulz
1   Institute for Medical Informatics, Statistics and Documentation, Medical University of Graz, Austria
2   Institute of Medical Biometry and Medical Informatics, University Medical Center, Freiburg, Germany
,
L. Jansen
3   Institute of Philosophy, University of Rostock, Rostock, Germany
› Author Affiliations
Further Information

Publication History

Publication Date:
05 March 2018 (online)

Summary

Objectives: Medical decision support and other intelligent applications in the life sciences depend on increasing amounts of digital information. Knowledge bases as well as formal ontologies are being used to organize biomedical knowledge and data. However, these two kinds of artefacts are not always clearly distinguished. Whereas the popular RDF(S) standard provides an intuitive triple-based representation, it is semantically weak. Description logics based ontology languages like OWL-DL carry a clear-cut semantics, but they are computationally expensive, and they are often misinterpreted to encode all kinds of statements, including those which are not ontological.

Method: We distinguish four kinds of statements needed to comprehensively represent domain knowledge: universal statements, terminological statements, statements about particulars and contingent statements. We argue that the task of formal ontologies is solely to represent universal statements, while the non-ontological kinds of statements can nevertheless be connected with ontological representations. To illustrate these four types of representations, we use a running example from parasitology.

Results: We finally formulate recommendations for semantically adequate ontologies that can efficiently be used as a stable framework for more context-dependent biomedical knowledge representation and reasoning applications like clinical decision support systems.