Rdf Primer / quote 15 of 55

What counts as a class in RDF Schema

RDF classes can be used to represent almost any category of thing, such as Web pages, people, document types, databases or abstract concepts. Classes are described using the RDF Schema resources rdfs:Class and rdfs:Resource, and the properties rdf:type and rdfs:subClassOf. [...] In RDF Schema, a class is any resource having an rdf:type property whose value is the resource rdfs:Class. So

Saved 26 February 2013 / www.w3.org ↗

#types #class #categories #people #database #resources

Related / other sources, sharing tags

A class is a category of shared traits

A class is a category of items that share one or more common traits serving as criteria to identify the items belonging to the class.

Cidoc-crm Version 4.2.4 - Reference Document #traits #class #categories #items #criteria

Orthogonality in faceted classifications

A true polyhierarchy really needs its individual hierarchies to be independent or orthogonal. Types in one should be independent of types in the other. That…

Classification, Facets, And Metaproperties #types #categories #levels #combination #implications

Classes model types, not instances

Classes (also called "terms" in this guide) model types of objects or processes in the real world. Note that classes model types, not instances. For example…

An Introduction To Obo Ontologies #class #objects #real-world #instances #types

Meetings cost programmers more

One reason programmers dislike meetings so much is that they're on a different type of schedule from other people. Meetings cost them more. (4-5)

Maker's Schedule, Manager's Schedule #meeting #schedule #people #types #different-types #programmers

A complete account is more than a physical one

It should be clear that this argument simply repeats the kind of category mistake identified by Ryle. So it is true, as Swinburne says, that a physical…

The Ego Trick (baggini, Julian) #materialism #dualism #description #categories

Ryle's category mistake

But why is this apparently simple error so common? A convincing explanation was offered by Gilbert Ryle in his 1949 classic The Concept of Mind. Ryle accused…

The Ego Trick (baggini, Julian) #dualism #mind #language #categories