From 0c83d9223ac5636045df23e57b4acf027e3c7721 Mon Sep 17 00:00:00 2001 From: Jakob Voss Date: Wed, 23 Oct 2024 18:24:11 +0200 Subject: [PATCH] Add E41 Appellation (close #4) --- index.qmd | 23 ++++++++++++++++++++--- 1 file changed, 20 insertions(+), 3 deletions(-) diff --git a/index.qmd b/index.qmd index 2160335..55bf974 100644 --- a/index.qmd +++ b/index.qmd @@ -24,7 +24,7 @@ CRM defines abstract types of entities (CRM classes) such as events, measurement The CRM classes [E61 Time Primitive], [E94 Space Primitive], and [E95 Spacetime Primitive] are both subclasses of [E59 Primitive Value] and of [E41 Appellation], so the latter can be used when a mapping to established RDF data types is not applicable. -Instances of **[E61 Time Primitive] and [E52 Time-Span]** are better expressed as RDF literals of type `xsd:date`, `xsd:time`, `xsd:dateTime`, or `xsd:dateTimeStamp` if applicable. More complex time values should be expressed using the [Extended Date/Time Format (EDTF)](https://www.loc.gov/standards/datetime/) but there is no established method to calculate with EDTF in RDF yet.^[See for a draft.] CRM includes its own classes and properties to model more complex temporal values so this has not been decided yet. +Instances of **[E61 Time Primitive] and [E52 Time-Span]** are better expressed as RDF literals of type `xsd:date`, `xsd:time`, `xsd:dateTime`, or `xsd:dateTimeStamp` if applicable. More complex time values should be expressed using the [Extended Date/Time Format (EDTF)](https://www.loc.gov/standards/datetime/) but there is no established method to calculate with dates in RDF yet.^[See discussion to extend SPARQL [for simple dates](https://github.com/w3c/sparql-dev/blob/main/SEP/SEP-0002/sep-0002.md) and [EDTF in RDF](https://periodo.github.io/edtf-ontology/).] CRM includes its own classes and properties to model more complex temporal values so this has not been decided yet. ~~~ttl @prefix edtf: @@ -86,6 +86,8 @@ CRM also defines class [E55 Type] with properties [P127 has broader term] and [P [E31 Document]: http://www.cidoc-crm.org/cidoc-crm/E31 [E32 Authority Document]: http://www.cidoc-crm.org/cidoc-crm/E32 [E55 Type]: http://www.cidoc-crm.org/cidoc-crm/E55 +[E35 Title]: http://www.cidoc-crm.org/cidoc-crm/E35 +[E41 Appellation]: http://www.cidoc-crm.org/cidoc-crm/E41 [E55 Identifier]: http://www.cidoc-crm.org/cidoc-crm/E42 [E58 Measurement Unit]: http://www.cidoc-crm.org/cidoc-crm/E58 @@ -106,9 +108,24 @@ Defintion of instances of [E58 Measurement Unit] should be avoided but either ta ] . ~~~ -#### E42 Identifier +#### E41 Appellation + +**[E42 Appellation]** and its subclasses ([E35 Title] and [E42 Identifier]) should be avoided (see [above](#primitive-values) for additional subclasses [E61 Time Primitive], [E94 Space Primitive], and [E94 Space Primitive]): + +~~~ttl + + crm:P102_has_title "RMS Titanic"@en . +~~~ + +If there are multiple names with one preferred name per language and optional name alias, use `skos:prefLabel` and `skos:altLabel`: + +~~~ttl + + skos:prefLabel "RMS Titanic"@en ; + skos:altLabel "Titanic"@en, "Royal Mail Steamship Titanic"@en . +~~~ -Don't use [E42 Identifier] for URIs if these URIs are meant to identify an RDF resource. If a resource happens to have multiple equivalent URIs, choose a preferred URI and use `owl:sameAs` to record aliases. +If an identifier **[E42 Identifier] is an URI** meant to identify an RDF resource, dont use plain strings but resource URIs in RDF. If a resource happens to have multiple equivalent URIs, choose a preferred URI and use `owl:sameAs` to record aliases: ~~~ttl a crm:E18_Physical Thing ;