Towards a musical Semantic Web
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The document discusses the development of a musical semantic web, emphasizing the need for an organized, machine-readable framework to classify and access music-related information. It outlines various ontologies, like the music ontology and event ontology, to improve the search and classification of musical works, performances, and recordings. The document also considers the integration of open data sources and community-driven projects to enhance the richness of music data on the semantic web.
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![The Music Ontology Problem: no agreed ways of dealing with music-related information on the Semantic Web Solution: Let's launch a community project, based on previous ontology engineering efforts! http://musicontology.com/ Several facets [Pachet]: Complex editorial information Acoustic information ( cultural information)](https://image.slidesharecdn.com/towards-a-musical-semantic-web-11670/85/Towards-a-musical-Semantic-Web-10-320.jpg)
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Towards a musical Semantic Web
- 1. Towards a musical Semantic Web Yves Raimond Centre for Digital Music, Queen Mary, University of London May 6th, 2007
- 2. Overview Introduction Web Web of data The Semantic Web RDF Making sense of the data Content negotiation The Music Ontology The Timeline ontology The Event ontology FRBR + FOAF Music production specific concepts Workflow information Levels of expressiveness Extensions And now?? Linking open data on the Semantic Web Two applications
- 3. Introduction Web 1. I ask my favourite search engine for Lonah creative commons song Looking for Creative Commons-licensed song from the French band Lonah
- 4. Introduction Web Looking for Creative Commons-licensed song from the French band Lonah 2. I read the context 油of each of the first results 3. The second one seems ok... 4. I reach this last.fm page: 5. According to the tags, it looks like the band I am looking for... 6. I read Music available on ... and decide to visit the linked page 7. I reach the Jamendo website 8. I launch a search for Lonah , and, finally:
- 5. Introduction Web Now: Ask your computer to do the same thing! Some requirements emerging from this scenario: - I need an entry point: the search engine - I need to understand the context of the links - I need to find my way into the web maze
- 6. Introduction Web of data Turning the Web into a huge, semantic, democratic database in order to make machines able to look by themselves for particular informations KB1 KB2 KB3 KB4 Application1 Application 2
- 7. The Semantic Web Resources on the Web can be far more than just web pages! http://moustaki.org/foaf.rdf#moustaki is a resource representing me http://dbtune.org/jamendo/band/lonah is a resource representing the band Lonah When HTTP-GET ting, Let's leave fancy HTML pages for humans, and let's provide some useful descriptions for the machine! Resource Description Framework http://dbtune.org/jamendo/band/both http://dbtune.org/jamendo/artist/5 Both http://xmlns.com/foaf/0.1/Group
- 8. Ontologies - Making sense of the data Ontologies , to map these resources and properties (links) 油to real-world objects and relationships Providing a COMMON UNDERSTANDING An Album 油has several Tracks , a name , a release date ... A Performance 油has one location , one time , some performers , ... Ontologies are also described in RDF Instance data refers to ontologies through RDF triples such as: < http://dbtune.org/jamendo/artist/5 > rdf:type < http://purl.org/ontology/mo/Musicartist > < http://dbtune.org/jamendo/artist/5 > foaf:name Both
- 9. Content negotiation http://dbtune.org/jamendo/artist/5 <mo:MusicArtist rdf:about="http://dbtune.org/jamendo/artist/5"> <foaf:based_near rdf:resource="http://dbpedia.org/France"/> <foaf:homepage rdf:resource="http://www.both-world.com"/> <foaf:img rdf:resource="http://img.jamendo.com/artists/b/both.jpg"/> <foaf:name rdf:datatype="&xsd;string">Both</foaf:name> </mo:MusicArtist> HTML for human consumption RDF for machine consumption And now, let's make both the human 油and the machine happy!
- 10. The Music Ontology Problem: no agreed ways of dealing with music-related information on the Semantic Web Solution: Let's launch a community project, based on previous ontology engineering efforts! http://musicontology.com/ Several facets [Pachet]: Complex editorial information Acoustic information ( cultural information)
- 11. The Timeline ontology First thing to address: representing temporal information This performance happened the 9 th of March, 1984 This beat is occurring around sample 32480 The second verse is just before the second chorus ... Only four concepts: Instant , Interval , TimeLine (and TimeLineMap )
- 12. The Event ontology We need a way to classify space/time regions : Performances, recordings, beats, verses, composition, ...
- 13. FRBR + FOAF FRBR: Functional Requirements for Bibliographic Records We use three FRBR concepts: Work Manifestation Item The Expression concept seemed to fuzzy for being used: whole workflow between a work and its manifestation FOAF: Friend-of-a-friend Person Group Organization ... and the relationship vocabulary (married, brother of, etc.)
- 14. Music production specific concepts On top of FRBR: MusicalWork , MusicalManifestation ( Album , Track , Playlist, etc.) MusicalItem ( Stream , a particular Vynil , etc.) On top of FOAF: MusicArtist and MusicGroup (defined classes) Arranger , Engineer , Performer , Composer , etc. (same thing) On top of the Event ontology: Composition , Arrangement , Performance , Sound , Recording Others: Signal , Score , Genre , Instrument , etc.
- 16. Levels of expressiveness Flexibility of the ontolog y - Level 1: purely editorial This track is on that particular album and that compilation and was created by that artist - Level 2: introducing events This is a recording of this particular musician playing that jazz-rock arrangement of that particular piece - Level 3: introducing event decomposition In this performance, this key was played at this particular time by this person, who was playing the piano
- 17. Extensions Lots of anchor points (instrument, genre, signal, timeline, etc.) Already several extensions available: - Musical feature ontology : uses Event as a way to classify features on a signal' timeline - Instrument taxonomy : thanks to Musicbrainz! - Genre taxonomy : thanks to Wikipedia/DBPedia - The Key ontology Other possible extensions: - Audio recording devices under the Recording concept? - Mixing events dealing with Signal objects? - Sound cognition under the Sound / Listener concepts? - Symbolic music notation under Score ? - Chord ontology?
- 18. Linking open data on the Semantic Web W3C' Semantic Web Education and Outreach community project Lots of open data available: Wikipedia, Geonames, Musicbrainz, creative commons repositories, etc. Let's interlink them using Semantic Web technologies: DATA MASHUPS So far: - Jamendo - Magnatune - Musicbrainz - DBPedia - GeoNames - RDF book mashup - ...
- 19. And now?? - Your audio files are just other items of a particular manifestation , which has an URI - Store the corresponding statements in your SW-enabled application - And your collection gets access to the whole web of knowledge (well, in its current state:-) ) Give me all musical works composed in a city with more than 500 000 inhabitants Is there someone nearby really liking this band and the same beer as me, so that we can have a drink tomorrow? Place my collection on a timeline and make me listen something composed in the UK in 1560, followed by a rock song recorded in the 60s Give me all Jimmy Hendrix songs played by Brass Bands with at least 5 members Are there any other performances of this work? Give me one with a small part at 120 bpm
- 20. Thank you!!