Re: Proposal for Schema.org extension mechanism

On 15 Feb 2015, at 14:14, Dan Brickley <danbri@google.com<mailto:danbri@google.com>> wrote:

Could you help by providing some more realistic examples of cases
where a description mixes core schema.org<http://schema.org> terms with those from
Bibliograph?

Below are a few examples of live data from OCLC’s worldcat.org<http://www.worldcat.org> containing some BiblioGraph.net<http://BiblioGraph.net> terms mixed with core schema.org<http://schema.org>, plus a few other bits and pieces.  I’ve provided extracts, and include links to the full descriptions, in turtle.  (if you prefer other flavours, swap the .ttl suffix for .nt, .rdf, .jsonld, or remove it for the html/rdfa version)

bgn:translationOfWork
(http://experiment.worldcat.org/oclc/682372219.ttl)
<http://www.worldcat.org/oclc/682372219>

        a                           schema:Book ;
        rdfs:label                  "Daxiong zai mo jie da mao xian" ;
        bgn:translationOfWork       <http://www.worldcat.org/title/-/oclc/682372219#CreativeWork/unidentifiedOriginalWork> ;
        schema:about                <http://experiment.worldcat.org/entity/work/data/918676648#Thing/you_mo_man_hua> , <http://experiment.worldcat.org/entity/work/data/918676648#Thing/mao_xian_man_hua> ;
        schema:bookEdition          "Chu ban." ;
        schema:contributor          <http://experiment.worldcat.org/entity/work/data/918676648#Person/qiu_changkai> ;
        schema:creator              <http://experiment.worldcat.org/entity/work/data/918676648#Person/tengzi_f_bu_erxiong> ;
        schema:datePublished        "2006" ;
        schema:description          "「大雄在魔界大冒險」是動畫電影的原著。這次的舞臺是以大雄創造出來的魔法世界為背景。但這個異次元世界與現實世界卻只有一線之隔。在這裡, 大雄與哆啦A夢等人同心協力一起對抗地球所面臨的危機。" ;
        schema:exampleOfWork        <http://worldcat.org/entity/work/id/918676648> ;


bgn:Thesis, bgn:inSupportOf
(http://experiment.worldcat.org/oclc/725508408.ttl)
<http://www.worldcat.org/oclc/725508408>

        a                     schema:CreativeWork , bgn:Thesis , schema:Book , pto:Web_document ;
        bgn:inSupportOf       "Thesis / Dissertation ETD" ;
        library:oclcnum       "725508408" ;
        schema:about          <http://experiment.worldcat.org/entity/work/data/901584627#Thing/diplomarbeit> , <http://experiment.worldcat.org/entity/work/data/901584627#Thing/da<sseldorf> , <http://experiment.worldcat.org/entity/work/data/901584627#Thing/fb_2> , <http://experiment.worldcat.org/entity/work/data/901584627#Thing/arts> ;
        schema:creator        <http://experiment.worldcat.org/entity/work/data/901584627#Agent/klein_karina> ;
        schema:datePublished  "2009” ;



bgn:MusicScore
(http://experiment.worldcat.org/oclc/11222068.ttl)
<http://www.worldcat.org/oclc/11222068>

        a                           bgn:MusicScore ;
        library:oclcnum             11222068 ;
        library:placeOfPublication  <http://id.loc.gov/vocabulary/countries/nyu> , <http://dbpedia.org/resource/New_York_City> ;
        schema:about                <http://id.loc.gov/authorities/classification/M557> , <http://id.worldcat.org/fast/1906674> ;
        schema:copyrightYear        "1963" ;
        schema:creator              <http://viaf.org/viaf/25022519> ;
        schema:datePublished        "1963" ;
        schema:exampleOfWork        <http://worldcat.org/entity/work/id/2260835954> ;
        schema:inLanguage           "zxx" ;
        schema:name                 "Twilight crane = fantasy for woodwind quintet = Yuzuru" ;
        schema:publication          <http://www.worldcat.org/title/-/oclc/11222068#PublicationEvent/new_york_g_schirmer_c1963> ;
        schema:publisher            <http://experiment.worldcat.org/entity/work/data/2260835954#Agent/g_schirmer> ;
        wdrs:describedby            <http://www.worldcat.org/title/-/oclc/11222068> .


These few examples are from a set of 300+ million bibliographic descriptions in worldcat.org<http://worldcat.org>, with links to some 200 million Work descriptions derived from the same source.  As a work in progress there are still a few issues to resolve both in vocabulary and data terms.  However they are an effective live demonstration of using schema.org<http://schema.org> as a core vocabulary and extending it with BiblioGraph.net<http://BiblioGraph.net> - the pattern being proposed for bib.schema.org<http://bib.schema.org>.

~Richard.