Social Music Network - Libre.fm

=Social Music Network - Libre.fm=

Libre.fm is the open source variant of Last.fm. It provides serialized Semantic Graphs as output for information requests on its API. Thereby, its knowledge representation model makes use of several Semantic Web ontologies, e.g., the FOAF Vocabulary, the Music Ontology, DCMI Metadata Terms or the Event Ontology (see here). RDFa is embedded in its web pages and its API can serialize Semantic Graphs as Turtle, N-Triples, JSON, RSS or RDF/XML data. The development is currently in an alpha state and hopefully in the future they will add further Semantic Web ontologies in the T-Box of their knowledge representation model.

Below are several different examples of serialized Semantic Graphs of different types of web pages on Libre.fm.

A Semantic Graph of a user web page on Libre.fm in RDF/N3
@prefix rdf: . @prefix xhv: . @prefix foaf: . @prefix gob: . @prefix mo: .

 xhv:stylesheet  ; xhv:alternate  ,  ; xhv:meta  ; foaf:homepage .

 gob:user .

 rdf:type mo:MusicArtist ; foaf:page  ; foaf:name "Zeroh G7" ; gob:user .

_:arccd75b1 gob:user <http://foaf.me/zazi#me>.

<http://alpha.libre.fm/artist/Zeroh+G7/track/Peace+and+Light+%28Juj%29> gob:user <http://foaf.me/zazi#me>.

<http://alpha.libre.fm/user/zazi0815#1293550510.df9e.artist> rdf:type mo:MusicArtist ; foaf:page <http://alpha.libre.fm/artist/Zeroh+G7/> ; foaf:name "Zeroh G7" ; gob:user <http://foaf.me/zazi#me>.

<http://alpha.libre.fm/artist/Zeroh+G7/track/Solara+Airlines+%28FlyLo%29> gob:user <http://foaf.me/zazi#me>.

<http://alpha.libre.fm/user/zazi0815#1293550394.983a.artist> rdf:type mo:MusicArtist ; foaf:page <http://alpha.libre.fm/artist/Zeroh+G7/> ; foaf:name "Zeroh G7" ; gob:user <http://foaf.me/zazi#me>.

<http://alpha.libre.fm/artist/Zeroh+G7/track/To+the+Dividers+%28G.A.M%29> gob:user <http://foaf.me/zazi#me>.

<http://alpha.libre.fm/user/zazi0815#1293550328.a27f.artist> rdf:type mo:MusicArtist ; foaf:page <http://alpha.libre.fm/artist/Zeroh+G7/> ; foaf:name "Zeroh G7" ; gob:user <http://foaf.me/zazi#me>.

<http://alpha.libre.fm/artist/Flako/track/MJ159+La+Burrita> gob:user <http://foaf.me/zazi#me>.

<http://alpha.libre.fm/user/zazi0815#1293548528.3799.artist> rdf:type mo:MusicArtist ; foaf:page <http://alpha.libre.fm/artist/Flako/> ; foaf:name "Flako" ; gob:user <http://foaf.me/zazi#me>.

<http://alpha.libre.fm/artist/NHK/track/Entire+set+2> gob:user <http://foaf.me/zazi#me>.

<http://alpha.libre.fm/user/zazi0815#1293548150.e430.artist> rdf:type mo:MusicArtist ; foaf:page <http://alpha.libre.fm/artist/NHK/> ; foaf:name "NHK" ; gob:user <http://foaf.me/zazi#me>.

<http://alpha.libre.fm/artist/Pixelord/track/Fish+Touch+%28Leonard+Dstroy+Remix%29> gob:user <http://foaf.me/zazi#me>.

<http://alpha.libre.fm/user/zazi0815#1293547977.d66f.artist> rdf:type mo:MusicArtist ; foaf:page <http://alpha.libre.fm/artist/Pixelord/> ; foaf:name "Pixelord" ; gob:user <http://foaf.me/zazi#me>.

<http://alpha.libre.fm/artist/Pogflipper/track/ITs+My+LucKy+cRaCK+PipE> gob:user <http://foaf.me/zazi#me>.

<http://alpha.libre.fm/user/zazi0815#1293547887.b013.artist> rdf:type mo:MusicArtist ; foaf:page <http://alpha.libre.fm/artist/Pogflipper/> ; foaf:name "Pogflipper" ; gob:user <http://foaf.me/zazi#me>.

<http://alpha.libre.fm/artist/Pogflipper/track/Love+love+love> gob:user <http://foaf.me/zazi#me>.

<http://alpha.libre.fm/user/zazi0815#1293547726.2b4e.artist> rdf:type mo:MusicArtist ; foaf:page <http://alpha.libre.fm/artist/Pogflipper/> ; foaf:name "Pogflipper" ; gob:user <http://foaf.me/zazi#me>.

<http://alpha.libre.fm/artist/Pogflipper/track/winding+down+the+hours> gob:user <http://foaf.me/zazi#me>.

<http://alpha.libre.fm/user/zazi0815#1293547585.396a.artist> rdf:type mo:MusicArtist ; foaf:page <http://alpha.libre.fm/artist/Pogflipper/> ; foaf:name "Pogflipper" ; gob:user <http://foaf.me/zazi#me>.

A Semantic Graph of an artist web page on Libre.fm in RDF/N3
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>. @prefix xhv: <http://www.w3.org/1999/xhtml/vocab#>. @prefix foaf: <http://xmlns.com/foaf/0.1/>. @prefix mo: <http://purl.org/ontology/mo/>. @prefix dc: <http://purl.org/dc/terms/>.

<http://alpha.libre.fm/artist/Onra/> xhv:stylesheet <http://s.libre.fm/2010.css> ; foaf:page <http://alpha.libre.fm/artist/Onra/> ; foaf:primaryTopic <http://alpha.libre.fm/artist/Onra/> ; foaf:name "Onra".

<http://dbtune.org/musicbrainz/resource/artist/e6a76b1d-2cbb-4587-9c09-6b7333638a0a> rdf:type mo:MusicArtist.

<http://alpha.libre.fm/artist/Onra/album/1.0.8+%5BBo+Bun+Records%5D#album> rdf:type mo:Record ; dc:title "1.0.8 [Bo Bun Records]" ; foaf:page <http://alpha.libre.fm/artist/Onra/album/1.0.8+%5BBo+Bun+Records%5D>.

<http://alpha.libre.fm/artist/Onra/album/7X7+Beat#album> rdf:type mo:Record ; dc:title "7X7 Beat" ; foaf:page <http://alpha.libre.fm/artist/Onra/album/7X7+Beat>.

<http://alpha.libre.fm/artist/Onra/album/1.0.8#album> rdf:type mo:Record ; dc:title "1.0.8" ; foaf:page <http://alpha.libre.fm/artist/Onra/album/1.0.8>.

<http://alpha.libre.fm/artist/Onra/album/Chinoiseries+%28LRPBBR01%29#album> rdf:type mo:Record ; dc:title "Chinoiseries (LRPBBR01)" ; foaf:page <http://alpha.libre.fm/artist/Onra/album/Chinoiseries+%28LRPBBR01%29>.

<http://alpha.libre.fm/artist/Onra/album/7+X+7+Beat#album> rdf:type mo:Record ; dc:title "7 X 7 Beat" ; foaf:page <http://alpha.libre.fm/artist/Onra/album/7+X+7+Beat>.

<http://alpha.libre.fm/artist/Onra/album/Long+Distance#album> rdf:type mo:Record ; dc:title "Long Distance" ; foaf:page <http://alpha.libre.fm/artist/Onra/album/Long+Distance>.

<http://alpha.libre.fm/artist/Onra/album/Favorite+All+Stars+Volume+1#album> rdf:type mo:Record ; dc:title "Favorite All Stars Volume 1" ; foaf:page <http://alpha.libre.fm/artist/Onra/album/Favorite+All+Stars+Volume+1>.

<http://alpha.libre.fm/artist/Onra/album/Les+Chinoiseries#album> rdf:type mo:Record ; dc:title "Les Chinoiseries" ; foaf:page <http://alpha.libre.fm/artist/Onra/album/Les+Chinoiseries>.

<http://alpha.libre.fm/artist/Onra/album/The+Big+Payback#album> rdf:type mo:Record ; dc:title "The Big Payback" ; foaf:page <http://alpha.libre.fm/artist/Onra/album/The+Big+Payback>.

<http://alpha.libre.fm/artist/Onra/album/Tribute#album> rdf:type mo:Record ; dc:title "Tribute" ; foaf:page <http://alpha.libre.fm/artist/Onra/album/Tribute>.

<http://alpha.libre.fm/artist/Onra/album/Present+Tribute#album> rdf:type mo:Record ; dc:title "Present Tribute" ; foaf:page <http://alpha.libre.fm/artist/Onra/album/Present+Tribute>.

<http://alpha.libre.fm/artist/Onra/album/Blalock%27s+Indie%2FRock+Playlist%3A+November+%282010%29#album> rdf:type mo:Record ; dc:title "Blalock's Indie/Rock Playlist: November (2010)" ; foaf:page <http://alpha.libre.fm/artist/Onra/album/Blalock%27s+Indie%2FRock+Playlist%3A+November+%282010%29>.

A Semantic Graph of an album web page on Libre.fm in RDF/N3
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>. @prefix xhv: <http://www.w3.org/1999/xhtml/vocab#>. @prefix foaf: <http://xmlns.com/foaf/0.1/>. @prefix dc: <http://purl.org/dc/terms/>. @prefix mo: <http://purl.org/ontology/mo/>.

<http://alpha.libre.fm/artist/Onra/album/Tribute/> xhv:stylesheet <http://s.libre.fm/2010.css> ; xhv:meta <http://alpha.libre.fm/rdf.php?fmt=xml&page=%2Fartist%2FOnra%2Falbum%2FTribute> ; foaf:maker <http://dbtune.org/musicbrainz/resource/artist/e6a76b1d-2cbb-4587-9c09-6b7333638a0a> ; foaf:page <http://alpha.libre.fm/artist/Onra/album/Tribute/> ; foaf:primaryTopic <http://alpha.libre.fm/artist/Onra/album/Tribute/> ; dc:title "Tribute".

<http://dbtune.org/musicbrainz/resource/artist/e6a76b1d-2cbb-4587-9c09-6b7333638a0a> rdf:type mo:MusicArtist ; foaf:page <http://alpha.libre.fm/artist/Onra/> ; foaf:name "Onra" ; foaf:made <http://alpha.libre.fm/artist/Onra/album/Tribute/>.

<http://alpha.libre.fm/artist/Onra/> foaf:primaryTopic <http://dbtune.org/musicbrainz/resource/artist/e6a76b1d-2cbb-4587-9c09-6b7333638a0a>.

<http://alpha.libre.fm/artist/Onra/album/Tribute#album> rdf:type mo:Record ; mo:track <http://alpha.libre.fm/artist/Onra/album/Tribute/track/Settle+Back+-+Intro#track> , <http://alpha.libre.fm/artist/Onra/album/Tribute/track/Ready#track> , <http://alpha.libre.fm/artist/Onra/album/Tribute/track/In+My+Place#track> , <http://alpha.libre.fm/artist/Onra/album/Tribute/track/On+A+Sunny+Day#track> , <http://alpha.libre.fm/artist/Onra/album/Tribute/track/Far+From+Here#track> , <http://alpha.libre.fm/artist/Onra/album/Tribute/track/Stop+-+Walk+On+By#track> , <http://alpha.libre.fm/artist/Onra/album/Tribute/track/47.6#track> , <http://alpha.libre.fm/artist/Onra/album/Tribute/track/Dans+Mon+Bus#track>.

<http://alpha.libre.fm/artist/Onra/album/Tribute/track/Settle+Back+-+Intro#track> rdf:type mo:Track ; foaf:page <http://alpha.libre.fm/artist/Onra/album/Tribute/track/Settle+Back+-+Intro> ; dc:title "Settle Back - Intro".

<http://alpha.libre.fm/artist/Onra/album/Tribute/track/Ready#track> rdf:type mo:Track ; foaf:page <http://alpha.libre.fm/artist/Onra/album/Tribute/track/Ready> ; dc:title "Ready".

<http://alpha.libre.fm/artist/Onra/album/Tribute/track/In+My+Place#track> rdf:type mo:Track ; foaf:page <http://alpha.libre.fm/artist/Onra/album/Tribute/track/In+My+Place> ; dc:title "In My Place".

<http://alpha.libre.fm/artist/Onra/album/Tribute/track/On+A+Sunny+Day#track> rdf:type mo:Track ; foaf:page <http://alpha.libre.fm/artist/Onra/album/Tribute/track/On+A+Sunny+Day> ; dc:title "On A Sunny Day".

<http://alpha.libre.fm/artist/Onra/album/Tribute/track/Far+From+Here#track> rdf:type mo:Track ; foaf:page <http://alpha.libre.fm/artist/Onra/album/Tribute/track/Far+From+Here> ; dc:title "Far From Here".

<http://alpha.libre.fm/artist/Onra/album/Tribute/track/Stop+-+Walk+On+By#track> rdf:type mo:Track ; foaf:page <http://alpha.libre.fm/artist/Onra/album/Tribute/track/Stop+-+Walk+On+By> ; dc:title "Stop - Walk On By".

<http://alpha.libre.fm/artist/Onra/album/Tribute/track/47.6#track> rdf:type mo:Track ; foaf:page <http://alpha.libre.fm/artist/Onra/album/Tribute/track/47.6> ; dc:title "47.6".

<http://alpha.libre.fm/artist/Onra/album/Tribute/track/Dans+Mon+Bus#track> rdf:type mo:Track ; foaf:page <http://alpha.libre.fm/artist/Onra/album/Tribute/track/Dans+Mon+Bus> ; dc:title "Dans Mon Bus".

A Semantic Graph of a track web page on Libre.fm in RDF/N3
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>. @prefix xhv: <http://www.w3.org/1999/xhtml/vocab#>. @prefix foaf: <http://xmlns.com/foaf/0.1/>. @prefix dc: <http://purl.org/dc/terms/>. @prefix mo: <http://purl.org/ontology/mo/>. @prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>.

<http://alpha.libre.fm/artist/Onra/album/Tribute/track/Ready> xhv:stylesheet <http://s.libre.fm/2010.css> ; xhv:meta <http://alpha.libre.fm/rdf.php?fmt=xml&page=%2Fartist%2FOnra%2Falbum%2FTribute%2Ftrack%2FReady> ; foaf:page <http://alpha.libre.fm/artist/Onra/album/Tribute/track/Ready> ; foaf:primaryTopic <http://alpha.libre.fm/artist/Onra/album/Tribute/track/Ready> ; dc:title "Ready".

<http://alpha.libre.fm/artist/Onra/album/Tribute/track/Ready#track> rdf:type mo:Track ; foaf:maker <http://dbtune.org/musicbrainz/resource/artist/e6a76b1d-2cbb-4587-9c09-6b7333638a0a> ; rdfs:comment "Playcount: 1" , "Listeners: 1".

<http://dbtune.org/musicbrainz/resource/artist/e6a76b1d-2cbb-4587-9c09-6b7333638a0a> rdf:type mo:MusicArtist ; foaf:page <http://alpha.libre.fm/artist/Onra/> ; foaf:name "Onra" ; foaf:made <http://alpha.libre.fm/artist/Onra/album/Tribute/track/Ready#track>.

<http://alpha.libre.fm/artist/Onra/> foaf:primaryTopic <http://dbtune.org/musicbrainz/resource/artist/e6a76b1d-2cbb-4587-9c09-6b7333638a0a>.

<http://alpha.libre.fm/artist/Onra/album/Tribute#album> rdf:type mo:Record ; foaf:page <http://alpha.libre.fm/artist/Onra/album/Tribute> ; dc:title "Tribute" ; mo:track <http://alpha.libre.fm/artist/Onra/album/Tribute/track/Ready#track>.

<http://alpha.libre.fm/artist/Onra/album/Tribute> foaf:primaryTopic <http://alpha.libre.fm/artist/Onra/album/Tribute#album>.
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