W3C home > Mailing lists > Public > public-gld-wg@w3.org > December 2013

Re: ACTION-149 - back references

From: Dan Brickley <danbri@google.com>
Date: Wed, 11 Dec 2013 12:12:40 +0000
Message-ID: <CAK-qy=5ZkmQ4T2On5FCjoMkhhH+sVa1S_gNkMK=jD0Le1t9G2g@mail.gmail.com>
To: Phil Archer <phila@w3.org>
Cc: Public GLD WG <public-gld-wg@w3.org>
On 11 December 2013 11:54, Phil Archer <phila@w3.org> wrote:
> Hi Dan,
>
> This e-mail is triggered specifically by an action item I have within GLD. I
> know we've discussed this before and you've taken some actions in a specific
> case but I'd like to generalise if possible.
>
> To what extent, if any, is schema.org willing to include
> owl:equivalentClass/Property statements in the markup to point back to a
> term originally in another vocab (Good Relations, DCAT etc).
>
> Take schema:Dataset. At the bottom of http://schema.org/Dataset it says
> "This class is based upon W3C DCAT work, and benefits from collaboration
> around the DCAT, ADMS and VoID vocabularies. See
> http://www.w3.org/wiki/WebSchemas/Datasets for full details and mappings."
> which is useful human info but isn't as precise as
>
> schema:Dataset owl:equivalentClass dcat:Dataset
>
> which is not present in the RDFa.
>
> Where such equivalences exist (and that won't be everywhere of course) would
> the schema.org partners be willing to make such machine readable statements?
>
> Is there a policy? If not, do you think one might usefully be formulated? I
> would argue that including such triples would:
>
> - make schema.org less open to criticisms of its not-quite open process (I
> have been asked why W3C is so supportive of schema.org whilst its process is
> not fully open. I'm happy to answer that positively but it remains an issue
> for some);
>
> - give more weight to the more domain-specific terms since they will be seen
> to have come from a community within that domain;
>
> - make it easy to answer the question "which should I use, schema:dataset or
> dcat:Dataset" since the answer would be "either, they're the same;"
>
> - give credit where it's due.
>
> WDYT?

A reasonable request. Will need some coding - will work on it in early
2014. Some of the underlying pieces are in place though.

We do have

<div typeof="rdfs:Class" resource="http://schema.org/DataCatalog">
<span class="h" property="rdfs:label">DataCatalog</span>
<span property="rdfs:comment">A collection of datasets.</span>
<span>Subclass of: <a property="rdfs:subClassOf"
href="http://schema.org/CreativeWork">CreativeWork</a></span>
<span>Source: <a property="dc:source"
href="http://www.w3.org/wiki/WebSchemas/SchemaDotOrgSources#source_DatasetClass">DatasetClass</a></span></div>

... in http://schema.org/docs/schema_org_rdfa.html - however there's
nothing yet in that Wiki page about the datasets work. Having
equivalentClass point to dcat:Dataset would be useful I think.

cheers,

Dan
Received on Wednesday, 11 December 2013 12:13:08 UTC

This archive was generated by hypermail 2.3.1 : Wednesday, 11 December 2013 12:13:08 UTC