PowerPointPrsentation

1
Music Ontologies - Some starting points for
discussion - Ludger van Elst ONTOlogen
Session 13.04.02
2
MusicBrainz (Schwarz, IEEE 2002)
ltmmArtist rdfabout"http//mm.musicbrainz.org/ar
tist/8f6bd1e4-fbe1-4f50-aa9b-94c450ec0f11gt
ltdctitlegtPortisheadlt/dctitlegtltmmsortNamegtPorti
sheadlt/mmsortNamegt ltmmalbumListgt
ltrdfSeqgt ltrdfli rdfresource"http//mm.
musicbrainz.org/album/911e3f30-192e-4c3d-aa25-2a89
d4202a3e"/gt ... ltrdfli
rdfresource"http//mm.musicbrainz.org/album/035d
097b-edf9-43fa-a2b9-0282592eb88c"/gt
lt/rdfSeqgt lt/mmalbumListgtlt/mmArtistgt
ltmmAlbum rdfabout"http//mm.musicbrainz.org/alb
um/911e3f30-192e-4c3d-aa25-2a89d4202a3e"gt
ltdctitlegtDummylt/dctitlegt ltdccreator
rdfresource"http//mm.musicbrainz.org/artist/8f6
bd1e4-fbe1-4f50-aa9b-94c450ec0f11"/gt
ltmmtrackListgt ltrdfSeqgt ltrdfli
rdfresource"http//mm.musicbrainz.org/track/fda4
55fb-1b25-4863-8619-10173e721c84"
mmtrackNum"3"/gt ... ltrdfli
rdfresource"http//mm.musicbrainz.org/track/8fac
b8ab-0b31-4d06-907f-0a9c9a72383c"
mmtrackNum"1"/gt ... lt/rdfSeqgt
lt/mmtrackListgt lt/mmAlbumgt
ltmmTrack rdfabout"http//mm.musicbrainz.org/tra
ck/8facb8ab-0b31-4d06-907f-0a9c9a72383c"gt
ltdctitlegtMysteronslt/dctitlegt ltdccreator
rdfresource"http//mm.musicbrainz.org/artist/8f6
bd1e4-fbe1-4f50-aa9b-94c450ec0f11"/gt
ltmmtrmidgtb4475531-d98e-49d0-94f6-d566391cd0adlt/mm
trmidgt ltmmtrmidgteb2367b0-ac8e-414a-b397-254c
061fec2dlt/mmtrmidgtlt/mmTrackgt

• KISS
• Open Source
• Relatively Appl. Driven
• No Schema

3
Some RDF Topics from MusicBrainz
4
A Taxonomy of Musical Genres (Pachet, Cazaly/Sony)

• Typical ontology situation Not starting from
  zero, but already lots of approaches in use
  (Amazon, AMG, MP3)
• Meta-ontology often undef., what is the
  meaning/semantics of a link
• Genres/MetaGenres division seems mainly
  application driven (Presentation on web pages)
• The papers design section seems to ask many of
  the right questions (methodology!).

5
Meta Genres in MP3.com, AMG, Amazon
Both AMG!, different top levels
6
MPEG-7 Ontology (Hunter)

• Quite comprehensive
• Multi(!) Media
• Non-MM entities Agents, Roles, Place, Time,
  Instrument
• Nice Web Metadata Architecture

7
Ontimusica (Chaouch LvE, work in progress)

• Music ontology for first studies on distributed
  inferences for IR
• Covers multiple aspects
• Musical Genres
• Artwork (most important distinction between the
  work an sich and the interpretation and its
  manifestation)
• Artists and business people
• Starting point Allmusic.com
• Implemented in Protégé-2000
• -( The actual version is worse than previous
  beta versions Some design and implementation
  errors!