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Linked Data Light
Link aggregation with BEACON




                   Jakob Voß
          Verbundzentrale des GBV (VZG)
   Semantic Web in Bibliotheken 2011 (#SWIB11)
               29. November 2011
Linked Data Light - Linkaggregation mit BEACON
link aggregation with BEACON




                                                                       CC-3.0 Jens Jäpel http://commons.wikimedia.org/wiki/File:Ur-Krostitzer_Bierdeckel_II.jpg
                               Linked Data principles
                               1. Use URIs as names for things.
                               2. 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.
link aggregation with BEACON
                               Linked Data principles
                               1. Use URIs as names for things.
                               2. 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.

                                  RDF/XML serialization, Non-Information
                                resources, 303 redirect, SPARQL version,
                                 entailment regimes... more beer, please!!!
link aggregation with BEACON   Linked Data Light
                               1. Use HTTP URIs
                                  as names for things.
                               2. When someone looks
                                  up a URI, provide useful information
                               3. Provide links between URIs
link aggregation with BEACON   Linked Data Light
                               1. Use HTTP URIs
                                  as names for things.
                               2. When someone looks
                                  up a URI, provide useful information
                               3. Provide links between URIs...



                                         ...for instance with BEACON
link aggregation with BEACON   BEACON in a nutshell
                               Many URIs contain local identifiers
                                                                      link
                               • http://name.for.thing/abc
                               • http://useful.informat.ion/?about=abc
link aggregation with BEACON   BEACON in a nutshell
                               Many URIs contain local identifiers
                                                                      link
                               • http://name.for.thing/abc
                               • http://useful.informat.ion/?about=abc




                                 #FORMAT: BEACON
                                 #PREFIX: http://name.for.thing/
                                 #TARGET: http://useful.informat.ion/?about={ID}

                                 abc
                                 xyz
                                 ...
link aggregation with BEACON   Aggregation of PND-based links
                               Many URIs contain local identifiers
                                                                    link
                               • http://d-nb.info/gnd/118540475
                               • http://opacplus.bsb-muenchen.de/search?
                                 pnd=118540475




                               #FORMAT: BEACON
                               #PREFIX: http://d-nb.info/gnd/
                               #TARGET: http://opacplus.bsb-muenchen.de/search?pnd={ID}
                               #INSTITUTION: Bayerische Staatsbibliothek

                               118540475
                               118580256
                               ...
link aggregation with BEACON   Use case: Wikipedia




                                                     context links
link aggregation with BEACON   Success
                               •   Libraries
                                   BSB, GBV,
                                   BSZ, Hebis...
                               •   Bibliographies
                               •   ~ 75 inst.
link aggregation with BEACON   More types of BEACON links
                               #FORMAT: BEACON
                               #PREFIX: http://d-nb.info/gnd/
                               #TARGET: http://opacplus.bsb-muenchen.de/search?pnd={ID}
                               #MESSAGE: {hits} Treffer im Katalog der BSB

                               118584596|6152
                               11850553X|4350
                               118508288|4251
                               ...

                                                                      number of hits

                               #FORMAT: BEACON
                               #PREFIX: http://d-nb.info/gnd/

                               118540475|http://example.org/emma-goldman
                               118580256|http://example.org/golda-meir
                               ...


                                                                 unstructured target
link aggregation with BEACON   Fully expanded BEACON links
                               •   source to link from
                               •   label/message
                               •   description
                               •   target to link to

                               <a href="target" title="description">label</a>

                               source|label|description|target

                               But if it get's complex, maybe you better use
                               another RDF serialization?
link aggregation with BEACON   Full BEACON compared to RDF

                                               predicate
                                  subject                        object



                               <a href="target" title="description">label</a>
link aggregation with BEACON   Full BEACON compared to RDF

                                               predicate
                                  subject                           object



                               <a href="target" title="description">label</a>

                                                          description

                                                   link
                                   source                           target


                                                            label
link aggregation with BEACON   Full BEACON compared to RDF

                                               predicate
                                  subject                          object



                               <a href="target" title="description">label</a>

                                                      description
                                                              dc:description
                                          foaf:primaryTopicOf
                                   source                        target

                                                                   dc:title
                                                           label
link aggregation with BEACON   Summary
                               •   Use URIs to identity things and to provide
                                   useful information about things
                               •   Provide links between things and useful
                                   information about things
                               •   BEACON files: lightweight dumps of links
                               •   People can aggregate this files

                               •   BEACON is not the only/best/final method to
                                   provide links, but it is a simple method that
                                   works. Feel free to upgrade it to RDF or not.
link aggregation with BEACON   More resources
                               •   Jakob Voss, Mathias Schindler, Christian
                                   Thiele: Link server aggregation with BEACON.
                                   Proceedings of International Symposium for
                                   Information Science. p. 519-521, vwh 2011.
                                   http://hdl.handle.net/10760/15407
                               •   http://de.wikipedia.org/wiki/Wikipedia:BEACON
                               •   http://search.cpan.org/dist/Data-Beacon/

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Linked Data Light - Linkaggregation mit BEACON

  • 1. Linked Data Light Link aggregation with BEACON Jakob Voß Verbundzentrale des GBV (VZG) Semantic Web in Bibliotheken 2011 (#SWIB11) 29. November 2011
  • 3. link aggregation with BEACON CC-3.0 Jens Jäpel http://commons.wikimedia.org/wiki/File:Ur-Krostitzer_Bierdeckel_II.jpg Linked Data principles 1. Use URIs as names for things. 2. 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.
  • 4. link aggregation with BEACON Linked Data principles 1. Use URIs as names for things. 2. 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. RDF/XML serialization, Non-Information resources, 303 redirect, SPARQL version, entailment regimes... more beer, please!!!
  • 5. link aggregation with BEACON Linked Data Light 1. Use HTTP URIs as names for things. 2. When someone looks up a URI, provide useful information 3. Provide links between URIs
  • 6. link aggregation with BEACON Linked Data Light 1. Use HTTP URIs as names for things. 2. When someone looks up a URI, provide useful information 3. Provide links between URIs... ...for instance with BEACON
  • 7. link aggregation with BEACON BEACON in a nutshell Many URIs contain local identifiers link • http://name.for.thing/abc • http://useful.informat.ion/?about=abc
  • 8. link aggregation with BEACON BEACON in a nutshell Many URIs contain local identifiers link • http://name.for.thing/abc • http://useful.informat.ion/?about=abc #FORMAT: BEACON #PREFIX: http://name.for.thing/ #TARGET: http://useful.informat.ion/?about={ID} abc xyz ...
  • 9. link aggregation with BEACON Aggregation of PND-based links Many URIs contain local identifiers link • http://d-nb.info/gnd/118540475 • http://opacplus.bsb-muenchen.de/search? pnd=118540475 #FORMAT: BEACON #PREFIX: http://d-nb.info/gnd/ #TARGET: http://opacplus.bsb-muenchen.de/search?pnd={ID} #INSTITUTION: Bayerische Staatsbibliothek 118540475 118580256 ...
  • 10. link aggregation with BEACON Use case: Wikipedia context links
  • 11. link aggregation with BEACON Success • Libraries BSB, GBV, BSZ, Hebis... • Bibliographies • ~ 75 inst.
  • 12. link aggregation with BEACON More types of BEACON links #FORMAT: BEACON #PREFIX: http://d-nb.info/gnd/ #TARGET: http://opacplus.bsb-muenchen.de/search?pnd={ID} #MESSAGE: {hits} Treffer im Katalog der BSB 118584596|6152 11850553X|4350 118508288|4251 ... number of hits #FORMAT: BEACON #PREFIX: http://d-nb.info/gnd/ 118540475|http://example.org/emma-goldman 118580256|http://example.org/golda-meir ... unstructured target
  • 13. link aggregation with BEACON Fully expanded BEACON links • source to link from • label/message • description • target to link to <a href="target" title="description">label</a> source|label|description|target But if it get's complex, maybe you better use another RDF serialization?
  • 14. link aggregation with BEACON Full BEACON compared to RDF predicate subject object <a href="target" title="description">label</a>
  • 15. link aggregation with BEACON Full BEACON compared to RDF predicate subject object <a href="target" title="description">label</a> description link source target label
  • 16. link aggregation with BEACON Full BEACON compared to RDF predicate subject object <a href="target" title="description">label</a> description dc:description foaf:primaryTopicOf source target dc:title label
  • 17. link aggregation with BEACON Summary • Use URIs to identity things and to provide useful information about things • Provide links between things and useful information about things • BEACON files: lightweight dumps of links • People can aggregate this files • BEACON is not the only/best/final method to provide links, but it is a simple method that works. Feel free to upgrade it to RDF or not.
  • 18. link aggregation with BEACON More resources • Jakob Voss, Mathias Schindler, Christian Thiele: Link server aggregation with BEACON. Proceedings of International Symposium for Information Science. p. 519-521, vwh 2011. http://hdl.handle.net/10760/15407 • http://de.wikipedia.org/wiki/Wikipedia:BEACON • http://search.cpan.org/dist/Data-Beacon/