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How does a knowledge graph sound like? (or: music is a graph)

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In this rather speculative talk, I'll pitch ideas around music and knowledge graphs. I'll describe a little experiment I conducted on a weekend involving electric guitars, a jam on a boat, music technology from the 1980s, and languages to represent knowledge graphs on the Web. I'll then discuss how a fun exercise can potentially be turned into meaningful research questions.

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How does a knowledge graph sound like? (or: music is a graph)

  1. 1. ‹#› Het begint met een idee 1 Het begint met een idee Thesis submitted & just approved “Refining Statistical Data on the Web”  60% of time is spent on data preparation  Intelligent solutions for statistical data integration on the Web  Use case on structured Humanities data Something different! 1 Faculty / department / title presentation WHY THIS TALK?
  2. 2. Vrije Universiteit Amsterdam  Maybe not that different… 2 SEMANTIC WEB AND THE HUMANITIES
  3. 3. ‹#› Het begint met een idee
  4. 4. Vrije Universiteit Amsterdam 4 ISWC 2013 JAM SESSION Jam’s “metadata”
  5. 5. Vrije Universiteit Amsterdam Besides how awesome this is…  The jam became global (i.e. de-referenceable URIs from anywhere) rather than local > But any video stream would have been more accurate (for humans)  The jam became machine readable > But not all of it  Digital music as Linked Data? 5 REPRESENTING MUSIC IN RDF
  6. 6. ‹#› Het begint met een idee HOW DOES A KNOWLEDGE GRAPH SOUND LIKE? (OR: MUSIC IS A GRAPH)
  7. 7. Vrije Universiteit Amsterdam  Music representation format which is 100% digital > (i.e. leaving nothing to analog signals  actual instruments)  MIDI (Musical Instrument Digital Interface) > Universal synthesizer interface > Roland (I. Kakehashi), Yamaha, Korg, Kawai (1981) > Digital, fine-grained representation of musical tracks and events > Wide range of controllers and instruments 7 WEEKEND EXPERIMENT
  8. 8. Vrije Universiteit Amsterdam 8 MIDI
  9. 9. Vrije Universiteit Amsterdam 9 MIDI2RDF https://github.com/albertmeronyo/midi2rdf
  10. 10. Vrije Universiteit Amsterdam  Music representation format which is > 100% digital (i.e. leaving nothing to analog signals) > Secundary list  MIDI (Musical Instrument Digital Interface) > Universal synthesizer interface > Roland (I. Kakehashi), Yamaha, Korg, Kawai (1981) > Digital, fine-grained representation of musical events > Wide range of controllers and instruments 10 WEEKEND EXPERIMENT
  11. 11. Vrije Universiteit Amsterdam  midi2rdf > Any MIDI to an RDF midi-comptabile representation > All MIDI resources get URIs (can link, be linked, de-referenced) > Music is a graph!  rdf2midi > Round trip conversion > Lossless! > MIDI subseteq RDF  playrdf.sh > RDF files can be ‘played’ without data loss > Demo 11 LOSSLESS CONVERSION
  12. 12. Vrije Universiteit Amsterdam  Enrichment of musical assets and events in Linked Data > Annotations > Provenance > Links to places, people, events > Music stream = live representation of music on play 12 APPLICATIONS (I)
  13. 13. Vrije Universiteit Amsterdam  Musical representation of knowledge graphs > Just as we care about visualization of knowledge graphs > Linkage of graph resources/properties to things that can be played > Size = pitch > Regularity = harmony (irregularity = dissonance) > Graph musical navigation > Music stream = navigation path 13 APPLICATIONS (II)
  14. 14. Vrije Universiteit Amsterdam
  15. 15. Vrije Universiteit Amsterdam Questions, comments, suggestions most welcome @albertmeronyo 15 THANK YOU!

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