So, we should be able to formally specify the "domain" of identifiers. Perhaps
that could be derived from the type constraints in linked properties, but I think it would
make sense as an explicit property on the identifier.
Some identifiers, e.g., GND, VIAF, require special attention because they span multiple
domains. A person identifer from GND bears other opportunities for cross-linking than an
organization identifier. No idea so far how to handle that ...
Von: Wikidata [mailto:firstname.lastname@example.org] Im Auftrag von
Antonin Delpeuch (lists)
Gesendet: Mittwoch, 21. Februar 2018 10:57
Betreff: Re: [Wikidata] Metadata about Persistent Identifiers
Thanks, there seems to be quite a lot of work to do in this area indeed!
On 20/02/2018 19:49, Andy Mabbett wrote:
As an example, I created 'KoreaMed Unique
How could we improve that? What additional properties might we need?
What properties already exist, that we could make use of?
I have recently proposed to create a "number of records" property to store
number of identifiers in a given scheme:
This property could typically apply here. The idea behind this property is that
we could compare its values to the number of uses of the corresponding
property in Wikidata.
One other thing I would love to see happening on Wikidata is keeping track of
the links between identifier schemes. If identifier X and identifier Y are both
used by the same database Z, then we can probably use Z to "match" X to Y and
If we had many "uses (P2283)" and "used by (P1535)" statements to
identifiers to databases, we could then draw a graph of identifiers and
databases using them. Given two identifiers, we could analyze the paths
between these two identifiers…
For now the graph is a bit sparse: http://tinyurl.com/y89u3enx
(And you can already see one issue: even if we have a path from ORCID to ISNI,
that does not mean that we can convert an ORCID id to an ISNI for the same
person via this path, as GRID contains ISNIs for organizations
Thanks a lot Andy for adding such statements on
by the way!
Also, this query:
returns over 5000 instances/ subclasses of "unique identifier"
(Q6545185) but includes both /types/ of identifiers (like the example
above) and individual identifier values, like ".ar" as an internet TLD
(domain name itself - Q32635 - is a subclass, not an instance, of UID)
- how should we distinguish between the two classes?
Urgh, that's messy. I think I would just change the ontology:
"domain name" (Q32635) should not be a subclass of "unique
(Q6545185), but rather an instance of it. (Actually the uniqueness is debatable,
I don't think DNS is meant to enforce any uniqueness at all, as it is very
common for a website to have multiple domain names. So maybe just "domain
name" "instance of" "identifier (Q853614)" would do).
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