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S. Dixon, C. Mesnage, B. Norton. LinkedBrainz Live
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S. Dixon, C. Mesnage, B. Norton. LinkedBrainz Live

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Simon Dixon, Cedric Mesnage and Barry Norton (Centre for Digital Music, Queen Mary University of London).

Simon Dixon, Cedric Mesnage and Barry Norton (Centre for Digital Music, Queen Mary University of London).
Music Linked Data Workshop, 12 May 2011, JISC, London.

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    S. Dixon, C. Mesnage, B. Norton. LinkedBrainz Live S. Dixon, C. Mesnage, B. Norton. LinkedBrainz Live Presentation Transcript

    • LinkedBrainz Live! LiveSimon Dixon, Cedric Mesnage, Barry Norton Centre for Digital Music, Queen Mary SPARQL + = RDF RDFa HTTP URIs
    • MusicBrainz• MusicBrainz is “an open music encyclopedia ... collects & makes available... music metadata”• It aims to be: – The ultimate source of music information by allowing anyone to contribute and releasing the data under open licenses. – The universal lingua franca for music by providing a reliable and unambiguous form of music identification, enabling both people & machines to have meaningful conversations about music.• It currently describes >9M tracks, soon to be >30M LinkedBrainz Live, Dixon, Mesnage and Norton 2 Music Linked Data Workshop, 12th May 2011
    • Linked Data• Defined in a W3C Technical Note including these core principles:1. Use URIs as names for things2. Use HTTP URIs so that people can look up those names.3. When someone looks up a URI, provide useful information, using the standards (RDF*, SPARQL)4. Include links to other URIs. so that they can discover more things. LinkedBrainz Live, Dixon, Mesnage and Norton 3 Music Linked Data Workshop, 12th May 2011
    • Linked Open Data• The Linking Open Data (LOD) project of the W3C Semantic Web Outreach and Education Task Force has developed a good deal of best practice and exposed a large number of interlinked datasets LinkedBrainz Live, Dixon, Mesnage and Norton 4 Music Linked Data Workshop, 12th May 2011
    • Comparison of MusicBrainz & LOD 1• MusicBrainz is a relational schema where (internal) primary keys are externalised as UUIDs, “Universally Unique” Identifiers• Disambiguation easier if entity type included: • artist/1. Use URIs as names for things b10bbbfc-cf9e-42e0-be17-e2c3e1d2600d2. Use HTTP URIs so that people can look up (The Beatles)those names.3. When someone looks up a URI, provide useful • recording/information, using the standards (RDF*, SPARQL) efe365d3-a1d8-42dc-a63d-0b4cc6ecfaed4. Include links to other URIs. so that they can (‘With a Little Help from my Friends’)discover more things. LinkedBrainz Live, Dixon, Mesnage and Norton 5 Music Linked Data Workshop, 12th May 2011
    • Comparison of MusicBrainz & LOD 2http://musicbrainz.org/artist/b10bbbfc-cf9e-42e0-be17-e2c3e1d2600d1. Use URIs as names for things2. Use HTTP URIs so that people can look upthose names.3. When someone looks up a URI, provide usefulinformation, using the standards (RDF*, SPARQL)4. Include links to other URIs. so that they candiscover more things. LinkedBrainz Live, Dixon, Mesnage and Norton 6 Music Linked Data Workshop, 12th May 2011
    • Comparison of MusicBrainz & LOD 3 <?xml version="1.0" encoding="UTF-8"?> <metadata xmlns="http://musicbrainz.org/ns /mmd-1.0#"> <artist id="b10bbbfc-cf9e-42e0-be17-e2c3e1d2600d" type="Group"> <name>The Beatles</name> <sort-name>Beatles, The</sort-name> <life-span begin="1957" end="1970-04-10"/> </artist> </metadata>http://musicbrainz.org/ws/1/artist/b10bbbfc-cf9e-42e0-be17-e2c3e1d2600d?type=xmlhttp://musicbrainz.org/artist/b10bbbfc-cf9e-42e0-be17-e2c3e1d2600d1. Use URIs as names for things2. Use HTTP URIs so that people can look upthose names.3. When someone looks up a URI, provide usefulinformation, using the standards (RDF*, SPARQL)4. Include links to other URIs. so that they candiscover more things. LinkedBrainz Live, Dixon, Mesnage and Norton 7 Music Linked Data Workshop, 12th May 2011
    • Comparison of MusicBrainz & LOD 2’• Non-informational resource:http://musicbrainz.org/artist/b10bbbfc-cf9e-42e0-be17-e2c3e1d2600d#_• Informational resources:http://musicbrainz.org/ws/1/artist/b10bbbfc-cf9e-42e0-be17-e2c3e1d2600d?type=rdfhttp://musicbrainz.org/ws/1/artist/b10bbbfc-cf9e-42e0-be17-e2c3e1d2600d?type=xmlhttp://musicbrainz.org/artist/b10bbbfc-cf9e-42e0-be17-e2c3e1d2600d1. Use URIs as names for things2. Use HTTP URIs so that people can look upthose names.3. When someone looks up a URI, provide usefulinformation, using the standards (RDF*, SPARQL)4. Include links to other URIs. so that they candiscover more things. LinkedBrainz Live, Dixon, Mesnage and Norton 8 Music Linked Data Workshop, 12th May 2011
    • Comparison of MusicBrainz & LOD 41. Use URIs as names for things2. Use HTTP URIs so that people can look upthose names.3. When someone looks up a URI, provide usefulinformation, using the standards (RDF*, SPARQL)4. Include links to other URIs. so that they candiscover more things. LinkedBrainz Live, Dixon, Mesnage and Norton 9 Music Linked Data Workshop, 12th May 2011
    • MB Next Generation Schema• Artist As before, but further attributes• Artist Credit Allows joint credit• Release Group Generalises ‘release type’ (cf. album) entity, cf.• Release • Track • Work• Medium • Track List • Recording LinkedBrainz Live, Dixon, Mesnage and Norton 10 Music Linked Data Workshop, 12th May 2011
    • Music Ontology LinkedBrainz Live, Dixon, Mesnage and Norton 11 Music Linked Data Workshop, 12th May 2011
    • Music Ontologyd2rq:ClassMap d2rq:ClassMap map:Recording a d2rq:ClassMap; d2rq:dataStorage map:database; map:recording_name a d2rq:PropertyBridge; d2rq:class mo:Signal; d2rq:belongsToClassMap map:Recording; d2rq:classDefinitionLabela"Signal"@en; map:recording_credit d2rq:PropertyBridge; d2rq:property dct:title, rdfs:label; ... map:DBpediaTrans a d2rq:TranslationTable; d2rq:uriPattern "recording/@@musicbrainz.recording.gid@@#_". d2rq:join "musicbrainz.recording.name => d2rq:join "musicbrainz.recording.artist_credit => d2rq:javaClass "translators.WikipediaTranslator". musicbrainz.track_name.id"; musicbrainz.artist_credit.id"; d2rq:column "musicbrainz.track_name.name". d2rq:join "musicbrainz.artist_credit_name.artist_credit => map:artist_dbpedia a d2rq:PropertyBridge; musicbrainz.artist_credit.id"; ... d2rq:property owl:sameAs; d2rq:join "musicbrainz.artist_credit_name.artist => ... d2rq:condition "musicbrainz.link_type.id=213"; musicbrainz.artist.id". map:DBpediaTrans. LinkedBrainz Live, Dixon, Mesnage and Norton ... d2rq:translateWith 12 Music Linked Data Workshop, 12th May 2011
    • RDFa Roll-out<div class="recordingheader" about="http://ngs.musicbrainz.org/recording/efe365d3-a1d8-42dc-a63d-0b4cc6ecfaed#_" typeof="mo:Signal"> <h1>“<a rel="foaf:isPrimaryTopicOf" href="http://ngs.musicbrainz.org/recording/efe365d3-a1d8-42dc-a63d-0b4cc6ecfaed" property="dct:title rdfs:label" xml:lang="" datatype=""> With a Little Help From My Friends</a>” </h1> <p class="subheader"> <span class="prefix">~</span> Recording by <a title="Beatles, The" rel="foaf:maker“ resource="[mbz:artist/b10bbbfc-cf9e-42e0-be17-e2c3e1d2600d#_]“ LinkedBrainz Live, Dixon, Mesange and Norton href="http://ngs.musicbrainz.org/artist/b10bbbfc-cf9e-42e0-be17-e2c3e1d2600d"> 13 Music Linked Data Workshop, 12th May 2011 The Beatles</a></p></div>
    • Future Work• Complete D2R mappings – Regular dumps to be made available – Deferencing to RDF from (NI) MB URIs – SPARQL endpoint – Completion of mappings (advanced relationships, interlinkage to further datasets), consistency testing• Tutorials on using LinkedBrainz Summer School (23rd May) Linked Services Tutorial (30th May) LinkedBrainz Live, Dixon, Mesnage and Norton 14 Music Linked Data Workshop, 12th May 2011