NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.
Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.
An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
This describes an extension to the Resource Description Framework/Schema (RDF/S) to specify relations between parts of the same whole (composite structure). For example, the relation between engine and wheels in a car applies in each individual car, rather than between parts of different cars or to engines in boats. The extension can be used with other extensions of RDF/S, such as Ontology Web Language (OWL), and augments techniques for representing relations between part and whole. An OWL version of the extension is also provided.
Bock, C.
(2006),
Part-part Relations in an RDF/S and OWL Extension, Journal of Web Semantics, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=822630
(Accessed October 13, 2025)