Direct or indirect expression of properties and values

To be completed. About expressing properties and annotations on property values, such as unit, origin, uncertainty, version... in which case using simple datatype properties is no longer suitable.

Best overview can be found in the references below:

References

Buildings and Semantics: Data models and web technologies for the built environment, edited by Pieter Pauwels and Kris McGlinn, CRC Press/Balkema, 2023

See Part I, chapter 2.

Representation of floating point values in RDF

We follow the recommendations provided in this open access paper by Jan Martin Keil and Merle Gänßinger, published in 2022, by using xsd:decimal for representing floating-point values, rather than xsd:float or xsd:double.

This orientation raises a consistency issue with geosparql that uses xsd:double as a range for such properties as hasMetricLength, from which we derived hasNominalMetricLength (see geosparql adapter).