RBMS Preconference “Futures”, San Diego, 21 June 2012Cataloging & Linked DataFrom Strings toThingsMichael PanzerAssistant ...
Topics for today• Cataloging from a linked data perspective   • Describing vs. identifying   • Mapping vs. linking• Interl...
Define “metadata”Implications for descriptivecataloging                               “Metadata is data associated with   ...
Cataloging as string transformation         The world’s libraries. Connected.
Cataloging as string transformation100 1#   $a Peretz, Isaac Leib,         $d 1851 or 2-1915.          The world’s librari...
Cataloging as string transformation100 1#   $a Peretz, Isaac Leib,         $d 1851 or 2-1915.240 10   $a Short stories. $l...
Cataloging as string transformation100 1#   $a Peretz, Isaac Leib,         $d 1851 or 2-1915.240 10   $a Short stories. $l...
Strings bundled as records                            100 1# $a        Peretz, Isaac Leib, $d 1851 or 2-1915.             ...
Strings bundled as records                            100 1# $a        Peretz, Isaac Leib, $d 1851 or 2-1915.             ...
Strings bundled as records                            100 1# $a        Peretz, Isaac Leib, $d 1851 or 2-1915.             ...
Strings bundled as records                             100 1# $a        Peretz, Isaac Leib, $d 1851 or 2-1915.            ...
Strings bundled as records                             100 1# $a        Peretz, Isaac Leib, $d 1851 or 2-1915.            ...
Strings bundled as records                             100 1# $a        Peretz, Isaac Leib, $d 1851 or 2-1915.            ...
Strings bundled as records                             100 1# $a        Peretz, Isaac Leib, $d 1851 or 2-1915.            ...
Strings as keysPersonal name:100 1# $a Peretz, Isaac Leib, $d 1851 or 2-1915Geographic heading:151 ## $a Grand Canyon (Ari...
Strings as keysPersonal name:100 1# $a Peretz, Isaac Leib, $d 1851 or 2-1915Geographic heading:151 ## $a Grand Canyon (Ari...
Strings as keysIdentification by description• Heading construction based on elimination of ambiguities    • Parts are adde...
Clustering of records by co-occurrence of complex text strings    001    $a 3157881    100 1# $a Peretz, Isaac Leib, $d 18...
Links as keysPersonal name:Geographic heading:    The world’s libraries. Connected.
Links as keysPersonal name:Geographic heading:    The world’s libraries. Connected.
Links as keysIdentification by denotation      The world’s libraries. Connected.
Links as keysIdentification by denotation      The world’s libraries. Connected.
Links as keysIdentification by denotation                                    http://viaf.org/viaf/27070050      The world’...
Links as keysIdentification by denotation                                    http://viaf.org/viaf/27070050                ...
Links as keysIdentification by denotation                                    http://viaf.org/viaf/27070050                ...
Links as keysIdentification by denotation                                     http://viaf.org/viaf/27070050               ...
Links as keysIdentification by denotation                                                                    “Real-world o...
Links as keysIdentification by denotation                                     http://viaf.org/viaf/27070050               ...
Links as keysIdentification by denotation• Identifier acquired from defining data source• Actionable/verifiable by derefer...
Exploring the knowledge graph                                             http://viaf.org/viaf/27070050         The world’...
Exploring the knowledge graph                                             http://viaf.org/viaf/27070050                   ...
Exploring the knowledge graph                                                     http://viaf.org/viaf/27070050           ...
Exploring the knowledge graph                                                     http://viaf.org/viaf/27070050           ...
Exploring the knowledge graph                                                       http://viaf.org/viaf/27070050         ...
Exploring the knowledge graph                                                       http://viaf.org/viaf/27070050         ...
Exploring the knowledge graph                                                        http://viaf.org/viaf/27070050        ...
Metadata as textual data (aka “the well-wrought urn”)   • “Record” as paradigm   • Emphasis on creation     of “literal” d...
Metadata as textual data (aka “the well-wrought urn”)   • “Record” as paradigm   • Emphasis on creation     of “literal” d...
Metadata as linked data (aka “the deconstructed urn”)   • Graph as paradigm   • Emphasis on creation     of properties bet...
Metadata as linked data (aka “the deconstructed urn”)   • Graph as paradigm   • Emphasis on creation     of properties bet...
I„m confused; this is linked data?Technical Interlude    The world’s libraries. Connected.
Linked data principles:Rules, stars, and bags of chips Four rules (Tim Berners-Lee):     The world’s libraries. Connected.
Linked data principles:Rules, stars, and bags of chips Four rules (Tim Berners-Lee): 1. Use URIs for things    (identifica...
Linked data principles:Rules, stars, and bags of chips Four rules (Tim Berners-Lee): 1. Use URIs for things    (identifica...
Linked data principles:Rules, stars, and bags of chips Four rules (Tim Berners-Lee): 1. Use URIs for things    (identifica...
Linked data principles:Rules, stars, and bags of chips Four rules (Tim Berners-Lee): 1. Use URIs for things    (identifica...
Let„s explore the first rule for a second          The world’s libraries. Connected.
Let„s explore the first rule for a second   • As seen, there is an     important distinction     between identifiers for  ...
Let„s explore the first rule for a second   • As seen, there is an     important distinction     between identifiers for  ...
Let„s explore the first rule for a second   • As seen, there is an     important distinction     between identifiers for  ...
Let„s explore the first rule for a second   • As seen, there is an     important distinction     between identifiers for  ...
Let„s explore the first rule for a second   • As seen, there is an     important distinction     between identifiers for  ...
Examples for publishing library linked dataDDC 23 as linkeddata    The world’s libraries. Connected.
Dewey URIs: Sample URIs• http://dewey.info/class/641/• http://dewey.info/class/641/about.rdf• http://dewey.info/class/641/...
Literals to Links                                              http://dewey.info/class/576.8/                             ...
Literals to Links                                                             576                                        B...
Literals to Links                                                              576                                        ...
Literals to Links                                                              576                                        ...
Literals to Links                                                              576                                        ...
Literals to Links                                                                576                                      ...
Dewey.info service (2009)(html view)   The world’s libraries. Connected.
Dewey.info service (2009)(RDF/SKOS view)   The world’s libraries. Connected.
Dewey.info service (2010)  The world’s libraries. Connected.
Dewey Linked Data Timeline2009                      2010               2011               2012dewey.info        Abridged E...
Dewey Distribution Environment         Translation                                                     WebDewey          S...
Dewey.info service (2012)  The world’s libraries. Connected.
Dewey Linked Data Timeline:  Next steps2009                 2010                    2011            2012               201...
Use Case:Links to GeoNames            The world’s libraries. Connected.
Use Case:Links to GeoNames    dewey.info               T2—797788 Tacoma            http://dewey.info/class/2--797788/     ...
Use Case:Links to GeoNames                                                     NYT articles    dewey.info               T2...
Use Case:Links to GeoNames                                                                           NYT articles    dewey...
Use Case:Links to GeoNames                                                                                     NYT article...
Use Case:Links to GeoNames                                                                                     NYT article...
Use Case:Links to GeoNames                                                                                     NYT article...
Two Views of T2—6626 Niger      The world’s libraries. Connected.
DDC + Geographic Viewpoints      The world’s libraries. Connected.
DDC + Geographic Viewpoints      The world’s libraries. Connected.
Examples for publishing library linked dataSchema.orgmicrodata inWorldCat.org    The world’s libraries. Connected.
The world’s libraries. Connected.
The world’s libraries. Connected.
Closing the circle, traversing the graphWhy shouldlibrarians care?    The world’s libraries. Connected.
Better living through LOD: role of libraries and librarians                                              • Librarians are ...
Better living through LOD: role of libraries and librarians                                              • Librarians are ...
Better living through LOD: role of libraries and librarians                                              • Librarians are ...
Borges‟ taxonomy vs. schema.org: but which one is which?   Animals   a) belonging to the Emperor   b) embalmed   c) traine...
Borges‟ taxonomy vs. schema.org: but which one is which?   Animals                                       • Intangible   a)...
Borges‟ taxonomy vs. schema.org: but which one is which?   Animals                                       • Intangible   a)...
Better living through LOD: role of libraries and librarians                                              • Librarians are ...
Better living through LOD: role of libraries and librarians                                              • Librarians are ...
Better living through LOD: role of libraries and librarians                                                     • Libraria...
Michael Panzerpanzerm@oclc.orgQuestions?   The world’s libraries. Connected.
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From Strings to Things: Cataloging & Linked Data

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From Strings to Things: Cataloging & Linked Data

  1. 1. RBMS Preconference “Futures”, San Diego, 21 June 2012Cataloging & Linked DataFrom Strings toThingsMichael PanzerAssistant Editor, DDCOCLC@MichaelPanzer The world’s libraries. Connected.
  2. 2. Topics for today• Cataloging from a linked data perspective • Describing vs. identifying • Mapping vs. linking• Interlude: Technical basis for linked data• Library Linked Data: 2 Examples • Dewey.info • WorldCat.org + schema.org• Why should librarians care? The world’s libraries. Connected.
  3. 3. Define “metadata”Implications for descriptivecataloging “Metadata is data associated with objects which relieves their potential- produces surrogates users of having to have full advance knowledge of their existence or- transforms textual characteristics.” information Dempsey/Heery (1997) The world’s libraries. Connected.
  4. 4. Cataloging as string transformation The world’s libraries. Connected.
  5. 5. Cataloging as string transformation100 1# $a Peretz, Isaac Leib, $d 1851 or 2-1915. The world’s libraries. Connected.
  6. 6. Cataloging as string transformation100 1# $a Peretz, Isaac Leib, $d 1851 or 2-1915.240 10 $a Short stories. $l English. $k Selections245 10 $a Stories and pictures / $c by Isaac Loeb Perez ; translated from the Yiddish by Helena Frank. The world’s libraries. Connected.
  7. 7. Cataloging as string transformation100 1# $a Peretz, Isaac Leib, $d 1851 or 2-1915.240 10 $a Short stories. $l English. $k Selections245 10 $a Stories and pictures / $c by Isaac Loeb Perez ; translated from the Yiddish by Helena Frank.260 ## $a Philadelphia : $b Jewish Publications Society of America, 1906. The world’s libraries. Connected.
  8. 8. Strings bundled as records 100 1# $a Peretz, Isaac Leib, $d 1851 or 2-1915. 240 10 $a Short stories. $l English. $k Selections 245 10 $a Stories and pictures / $c by Isaac Loeb Perez ; translated from the Yiddish by Helena Frank. 260 ## $a Philadelphia : $b Jewish Publications Society of America, 1906. The world’s libraries. Connected.
  9. 9. Strings bundled as records 100 1# $a Peretz, Isaac Leib, $d 1851 or 2-1915. 240 10 $a Short stories. $l English. $k Selections 245 10 $a Stories and pictures / $c by Isaac Loeb Perez ; translated from the Yiddish by Helena Frank. 260 ## $a Philadelphia : $b Jewish Publications Society of America, 1906. The world’s libraries. Connected.
  10. 10. Strings bundled as records 100 1# $a Peretz, Isaac Leib, $d 1851 or 2-1915. 240 10 $a Short stories. $l English. $k Selections 245 10 $a Stories and pictures / $c by Isaac Loeb Perez ; translated from the Yiddish by Helena Frank. 260 ## $a Philadelphia : $b Jewish Publications Society of America, 1906. The world’s libraries. Connected.
  11. 11. Strings bundled as records 100 1# $a Peretz, Isaac Leib, $d 1851 or 2-1915. 240 10 $a Short stories. $l English. $k Selections 245 10 $a Stories and pictures / $c by Isaac Loeb Perez ; translated from the Yiddish by Helena Frank. 260 ## $a Philadelphia : $b Jewish Publications Society of America, 1906.Cataloging as string transformation stilloperates (cum grano salis) within the confinesof a card catalog The world’s libraries. Connected.
  12. 12. Strings bundled as records 100 1# $a Peretz, Isaac Leib, $d 1851 or 2-1915. 240 10 $a Short stories. $l English. $k Selections 245 10 $a Stories and pictures / $c by Isaac Loeb Perez ; translated from the Yiddish by Helena Frank. 260 ## $a Philadelphia : $b Jewish Publications Society of America, 1906.Cataloging as string transformation stilloperates (cum grano salis) within the confinesof a card catalog• Focus on record as “end product” The world’s libraries. Connected.
  13. 13. Strings bundled as records 100 1# $a Peretz, Isaac Leib, $d 1851 or 2-1915. 240 10 $a Short stories. $l English. $k Selections 245 10 $a Stories and pictures / $c by Isaac Loeb Perez ; translated from the Yiddish by Helena Frank. 260 ## $a Philadelphia : $b Jewish Publications Society of America, 1906.Cataloging as string transformation stilloperates (cum grano salis) within the confinesof a card catalog• Focus on record as “end product”• Record as mark-up of text The world’s libraries. Connected.
  14. 14. Strings bundled as records 100 1# $a Peretz, Isaac Leib, $d 1851 or 2-1915. 240 10 $a Short stories. $l English. $k Selections 245 10 $a Stories and pictures / $c by Isaac Loeb Perez ; translated from the Yiddish by Helena Frank. 260 ## $a Philadelphia : $b Jewish Publications Society of America, 1906.Cataloging as string transformation stilloperates (cum grano salis) within the confinesof a card catalog• Focus on record as “end product”• Record as mark-up of text• But: transformations can be extremely sophisticated! The world’s libraries. Connected.
  15. 15. Strings as keysPersonal name:100 1# $a Peretz, Isaac Leib, $d 1851 or 2-1915Geographic heading:151 ## $a Grand Canyon (Ariz. : City) The world’s libraries. Connected.
  16. 16. Strings as keysPersonal name:100 1# $a Peretz, Isaac Leib, $d 1851 or 2-1915Geographic heading:151 ## $a Grand Canyon (Ariz. : City) The world’s libraries. Connected.
  17. 17. Strings as keysIdentification by description• Heading construction based on elimination of ambiguities • Parts are added to increase specificity of description to avoid conflicts with other headings• Use of abbreviations, punctuation, special delimiters• Form of heading carries meaning (dates, etc.)• Headings relate to other headings• Keys act as access points for records, not described entities ≈ cutting a key based on a vague description of a lock that may not even exist The world’s libraries. Connected.
  18. 18. Clustering of records by co-occurrence of complex text strings 001 $a 3157881 100 1# $a Peretz, Isaac Leib, $d 1851 or 2-1915 ... Bib record Authority record 001 $a oca00046566# 100 1# $a Peretz, Isaac Leib, $d 1851 or 2-1915 400 1# $a Perez, Isaac Loeb, $d 1851 or 2-1915 400 1# $a ‫$ ,.פרץ י. ל‬d 1851 or 2-1915 400 1# $a ‫.ּפרץ. י. ל‬ ... 001 $a 21331058 100 1# $6 880-01 $a Peretz, Isaac Leib, $d 1851 or 2-1915 880 1# $6 100-01/(2/r $a .‫פרץ, י. ל‬ ... Bib record The world’s libraries. Connected.
  19. 19. Links as keysPersonal name:Geographic heading: The world’s libraries. Connected.
  20. 20. Links as keysPersonal name:Geographic heading: The world’s libraries. Connected.
  21. 21. Links as keysIdentification by denotation The world’s libraries. Connected.
  22. 22. Links as keysIdentification by denotation The world’s libraries. Connected.
  23. 23. Links as keysIdentification by denotation http://viaf.org/viaf/27070050 The world’s libraries. Connected.
  24. 24. Links as keysIdentification by denotation http://viaf.org/viaf/27070050 owl:sameAs rdf:type rdf:type http://dbpedia.org/ resource/Isaac_Leib_Peretz rdaEnt:Person foaf:Person The world’s libraries. Connected.
  25. 25. Links as keysIdentification by denotation http://viaf.org/viaf/27070050 owl:sameAs rdf:type rdf:type http://dbpedia.org/ resource/Isaac_Leib_Peretz rdaEnt:Person foaf:Person http://viaf.org/viaf/27070050/ The world’s libraries. Connected.
  26. 26. Links as keysIdentification by denotation http://viaf.org/viaf/27070050 owl:sameAs rdf:type rdf:type http://dbpedia.org/ resource/Isaac_Leib_Peretz rdaEnt:Person foaf:Person foaf:focus http://viaf.org/viaf/27070050/ The world’s libraries. Connected.
  27. 27. Links as keysIdentification by denotation “Real-world object” (non-information resource) http://viaf.org/viaf/27070050 owl:sameAs rdf:type rdf:type http://dbpedia.org/ resource/Isaac_Leib_Peretz rdaEnt:Person foaf:Person Web document (information resource) foaf:focus http://viaf.org/viaf/27070050/ The world’s libraries. Connected.
  28. 28. Links as keysIdentification by denotation http://viaf.org/viaf/27070050 owl:sameAs rdf:type rdf:type http://dbpedia.org/ resource/Isaac_Leib_Peretz rdaEnt:Person foaf:Person foaf:focus http://viaf.org/viaf/27070050/ The world’s libraries. Connected.
  29. 29. Links as keysIdentification by denotation• Identifier acquired from defining data source• Actionable/verifiable by dereferencing through web protocols• Opaque• Link directly to things• Allow targeted knowledge acquisition across domain boundaries ≈ Key is inseparably connected to an entity (person, place, object, concept, …) and unlocks further knowledge The world’s libraries. Connected.
  30. 30. Exploring the knowledge graph http://viaf.org/viaf/27070050 The world’s libraries. Connected.
  31. 31. Exploring the knowledge graph http://viaf.org/viaf/27070050 foaf:name owl:sameAs “Peretz, Isaac Leib, dct:created 1851 or 2-1915” rdf:type http://dbpedia.org/ resource/Isaac_Leib_Peretz http://www.worldcat.org/oclc/ foaf:Person 21331058 The world’s libraries. Connected.
  32. 32. Exploring the knowledge graph http://viaf.org/viaf/27070050 foaf:name owl:sameAs “Peretz, Isaac Leib, dct:created 1851 or 2-1915” rdf:type http://dbpedia.org/ resource/Isaac_Leib_Peretz http://www.worldcat.org/oclc/ dbpedia-owl: foaf:Person 21331058 dateOfBirth dbpedia-owl: foaf:depiction dateOfDeath “1851-05-18” http://upload.wikimedia.org/ “1915-04-03” wikipedia/commons/2/2d/ I_L_Peretz_postcard.jpg The world’s libraries. Connected.
  33. 33. Exploring the knowledge graph http://viaf.org/viaf/27070050 foaf:name owl:sameAs “Peretz, Isaac Leib, dct:created 1851 or 2-1915” rdf:type http://dbpedia.org/ resource/Isaac_Leib_Peretz http://www.worldcat.org/oclc/ dbpedia-owl: foaf:Person 21331058 dateOfBirth dbpedia-owl: foaf:depiction dateOfDeath rdf:type library: placeOfPublication “1851-05-18” http://upload.wikimedia.org/ schema:Book “1915-04-03” wikipedia/commons/2/2d/ I_L_Peretz_postcard.jpg http://sws.geonames.org/ 4560349/ The world’s libraries. Connected.
  34. 34. Exploring the knowledge graph http://viaf.org/viaf/27070050 foaf:name owl:sameAs “Peretz, Isaac Leib, dct:created 1851 or 2-1915” rdf:type http://dbpedia.org/ resource/Isaac_Leib_Peretz http://www.worldcat.org/oclc/ dbpedia-owl: foaf:Person 21331058 dateOfBirth dbpedia-owl: foaf:depiction dateOfDeath rdf:type library: placeOfPublication “1851-05-18” http://upload.wikimedia.org/ schema:Book “1915-04-03” wikipedia/commons/2/2d/ I_L_Peretz_postcard.jpg http://sws.geonames.org/ “39.95234” 4560349/ wgs84_pos:lat -75.16379 wgs84_pos:long The world’s libraries. Connected.
  35. 35. Exploring the knowledge graph http://viaf.org/viaf/27070050 foaf:name owl:sameAs “Peretz, Isaac Leib, dct:created 1851 or 2-1915” rdf:type http://dbpedia.org/ resource/Isaac_Leib_Peretz http://www.worldcat.org/oclc/ dbpedia-owl: foaf:Person 21331058 dateOfBirth dbpedia-owl: foaf:depiction dateOfDeath rdf:type library: placeOfPublication “1851-05-18” http://upload.wikimedia.org/ schema:Book “1915-04-03” wikipedia/commons/2/2d/ I_L_Peretz_postcard.jpg http://sws.geonames.org/ “39.95234” 4560349/ wgs84_pos:lat -75.16379 gn:parentFeature wgs84_pos:long http://www.geonames.org/ http://sws.geonames.org/ gn:parentCountry 6252001/ 5205788/ The world’s libraries. Connected.
  36. 36. Exploring the knowledge graph http://viaf.org/viaf/27070050 foaf:name owl:sameAs “Peretz, Isaac Leib, dct:created 1851 or 2-1915” rdf:type http://dbpedia.org/ resource/Isaac_Leib_Peretz http://www.worldcat.org/oclc/ dbpedia-owl: foaf:Person 21331058 dateOfBirth dbpedia-owl: foaf:depiction dateOfDeath rdf:type library: placeOfPublication “1851-05-18” http://upload.wikimedia.org/ schema:Book “1915-04-03” wikipedia/commons/2/2d/ I_L_Peretz_postcard.jpg http://sws.geonames.org/“Leta Zunze “39.95234” 4560349/ Ubumwe zaAmerika”@rn wgs84_pos:lat -75.16379 gn:parentFeature wgs84_pos:longgn:officalName http://www.geonames.org/ gn:parentCountry http://sws.geonames.org/ 6252001/ 5205788/ The world’s libraries. Connected.
  37. 37. Metadata as textual data (aka “the well-wrought urn”) • “Record” as paradigm • Emphasis on creation of “literal” descriptions • Structured, but flat • Schema-dependent • Assembled from strings • Collection of complex values with meaning also carried by syntax and relative position The world’s libraries. Connected.
  38. 38. Metadata as textual data (aka “the well-wrought urn”) • “Record” as paradigm • Emphasis on creation of “literal” descriptions • Structured, but flat • Schema-dependent • Assembled from strings • Collection of complex values with meaning also carried by syntax and relative position The world’s libraries. Connected.
  39. 39. Metadata as linked data (aka “the deconstructed urn”) • Graph as paradigm • Emphasis on creation of properties between entities • Structured, but open- ended • Schema-free • Assembled from building blocks • Collection of knowledge statements The world’s libraries. Connected.
  40. 40. Metadata as linked data (aka “the deconstructed urn”) • Graph as paradigm • Emphasis on creation of properties between entities • Structured, but open- ended • Schema-free • Assembled from building blocks • Collection of Brian H. Nielsen knowledge statements The world’s libraries. Connected.
  41. 41. I„m confused; this is linked data?Technical Interlude The world’s libraries. Connected.
  42. 42. Linked data principles:Rules, stars, and bags of chips Four rules (Tim Berners-Lee): The world’s libraries. Connected.
  43. 43. Linked data principles:Rules, stars, and bags of chips Four rules (Tim Berners-Lee): 1. Use URIs for things (identification) The world’s libraries. Connected.
  44. 44. Linked data principles:Rules, stars, and bags of chips Four rules (Tim Berners-Lee): 1. Use URIs for things (identification) 2. Use http-URIs so people can look up those names (dereferenceability) The world’s libraries. Connected.
  45. 45. Linked data principles:Rules, stars, and bags of chips Four rules (Tim Berners-Lee): 1. Use URIs for things (identification) 2. Use http-URIs so people can look up those names (dereferenceability) 3. When someone looks up a URI, provide useful information, using the standards The world’s libraries. Connected.
  46. 46. Linked data principles:Rules, stars, and bags of chips Four rules (Tim Berners-Lee): 1. Use URIs for things (identification) 2. Use http-URIs so people can look up those names (dereferenceability) 3. When someone looks up a URI, provide useful information, using the standards 4. Include links to other URIs, so that they can discover more things (relationships) The world’s libraries. Connected.
  47. 47. Let„s explore the first rule for a second The world’s libraries. Connected.
  48. 48. Let„s explore the first rule for a second • As seen, there is an important distinction between identifiers for things and for descriptions of things The world’s libraries. Connected.
  49. 49. Let„s explore the first rule for a second • As seen, there is an important distinction between identifiers for things and for descriptions of things • URLs for things that have no web representation The world’s libraries. Connected.
  50. 50. Let„s explore the first rule for a second • As seen, there is an important distinction between identifiers for things and for descriptions of things • URLs for things that have no web representation • Reusing web infrastructure to resolve URL for non- information resources The world’s libraries. Connected.
  51. 51. Let„s explore the first rule for a second • As seen, there is an important distinction between identifiers for things and for descriptions of things • URLs for things that have no web representation • Reusing web infrastructure to resolve URL for non- information resources • Web of data overlays web of things The world’s libraries. Connected.
  52. 52. Let„s explore the first rule for a second • As seen, there is an important distinction between identifiers for things and for descriptions of things • URLs for things that have no web representation • Reusing web infrastructure to resolve URL for non- information resources • Web of data overlays web of things • Big idea of early semantic web; linked data approach more prudent The world’s libraries. Connected.
  53. 53. Examples for publishing library linked dataDDC 23 as linkeddata The world’s libraries. Connected.
  54. 54. Dewey URIs: Sample URIs• http://dewey.info/class/641/• http://dewey.info/class/641/about.rdf• http://dewey.info/class/641/about.en• http://dewey.info/class/641/about.it• http://dewey.info/class/641.5/a14/• http://dewey.info/class/641/e23/about.en.rdf• http://dewey.info/class/641.23/e23/2012-06-14/about.en The world’s libraries. Connected.
  55. 55. Literals to Links http://dewey.info/class/576.8/ Broader terms Related terms Narrower terms Mapped terms Relative Index terms The world’s libraries. Connected.
  56. 56. Literals to Links 576 Broader terms http://dewey.info/class/576.8/ Related terms Narrower terms Mapped terms Relative Index terms The world’s libraries. Connected.
  57. 57. Literals to Links 576 Broader terms http://dewey.info/class/576.8/ Related terms Mapped terms Relative Index terms Narrower terms 591.38 576.8… … The world’s libraries. Connected.
  58. 58. Literals to Links 576 Broader terms http://dewey.info/class/576.8/ Mapped terms Relative Index terms 231.7652 Related terms Narrower terms 576.8… 591.38 … The world’s libraries. Connected.
  59. 59. Literals to Links 576 Broader terms Relative Index terms http://dewey.info/class/576.8/ Homoplasy Mapped terms 231.7652 Related terms Narrower terms 576.8… 591.38 … The world’s libraries. Connected.
  60. 60. Literals to Links 576 Broader terms Relative Index terms http://dewey.info/class/576.8/ Mapped terms Homoplasy FAST 231.7652 Related terms GND Narrower terms 576.8… 591.38 … The world’s libraries. Connected.
  61. 61. Dewey.info service (2009)(html view) The world’s libraries. Connected.
  62. 62. Dewey.info service (2009)(RDF/SKOS view) The world’s libraries. Connected.
  63. 63. Dewey.info service (2010) The world’s libraries. Connected.
  64. 64. Dewey Linked Data Timeline2009 2010 2011 2012dewey.info Abridged Edition 12th language DDC 23 inlaunched with DDC 14 in 3 languages added to DDC dewey.infoSummaries in 11 Summaries inlanguages dewey.info New data format New data format and distribution and distribution environment environment introduced for extended to Dewey data dewey.info British Library FAO DNB DDC in LOD Cloud The world’s libraries. Connected.
  65. 65. Dewey Distribution Environment Translation WebDewey Software OCLC German EN EN/DE ESS OCLC Translation WebDewey Software German Italian DE EN/IT Translation WebDewey Software Swedish French DISTRIBUTION mixed EN/SV EN/FR SERVER Translation WebDewey Software French Arabic FR EN/AR Translation WebDewey Software Italian Norwegian IT EN/NO Linked Translation DDC Web Software WebDewey Services . Norwegian Swedish . NO EN/SV . The world’s libraries. Connected.
  66. 66. Dewey.info service (2012) The world’s libraries. Connected.
  67. 67. Dewey Linked Data Timeline: Next steps2009 2010 2011 2012 2013dewey.info Abridged Edition 12th language DDC 23 in DDC 23 facetslaunched with 14 in 3 added to DDC dewey.info FASTDDC Summaries languages Summaries in MSCin 11 languages dewey.info Table 2 + GeoNames New data format New data format and distribution and distribution environment environment introduced for extended to Dewey data dewey.info British Library FAO DNB DDC in LOD Cloud The world’s libraries. Connected.
  68. 68. Use Case:Links to GeoNames The world’s libraries. Connected.
  69. 69. Use Case:Links to GeoNames dewey.info T2—797788 Tacoma http://dewey.info/class/2--797788/ The world’s libraries. Connected.
  70. 70. Use Case:Links to GeoNames NYT articles dewey.info T2—797788 Tacoma http://dewey.info/class/2--797788/ The world’s libraries. Connected.
  71. 71. Use Case:Links to GeoNames NYT articles dewey.info T2—797788 Tacoma http://dewey.info/class/2--797788/ Geo- Names http://sws.geonames.org/5812944/ The world’s libraries. Connected.
  72. 72. Use Case:Links to GeoNames NYT articles dewey.info T2—797788 Tacoma http://dewey.info/class/2--797788/ NYT Tacoma (Wash) http://data.nytimes.com/N51488338864578420851 Geo- Names http://sws.geonames.org/5812944/ The world’s libraries. Connected.
  73. 73. Use Case:Links to GeoNames NYT articles dewey.info T2—797788 Tacoma http://dewey.info/class/2--797788/ NYT Tacoma (Wash) http://data.nytimes.com/N51488338864578420851 Geo- Names http://sws.geonames.org/5812944/ The world’s libraries. Connected.
  74. 74. Use Case:Links to GeoNames NYT articles dewey.info T2—797788 Tacoma http://dewey.info/class/2--797788/ NYT Tacoma (Wash) http://data.nytimes.com/N51488338864578420851 Geo- Names http://sws.geonames.org/5812944/ The world’s libraries. Connected.
  75. 75. Two Views of T2—6626 Niger The world’s libraries. Connected.
  76. 76. DDC + Geographic Viewpoints The world’s libraries. Connected.
  77. 77. DDC + Geographic Viewpoints The world’s libraries. Connected.
  78. 78. Examples for publishing library linked dataSchema.orgmicrodata inWorldCat.org The world’s libraries. Connected.
  79. 79. The world’s libraries. Connected.
  80. 80. The world’s libraries. Connected.
  81. 81. Closing the circle, traversing the graphWhy shouldlibrarians care? The world’s libraries. Connected.
  82. 82. Better living through LOD: role of libraries and librarians • Librarians are uniquely qualified, they just have to get more involved The world’s libraries. Connected.
  83. 83. Better living through LOD: role of libraries and librarians • Librarians are uniquely qualified, they just have to get more involved • From producing metadata records (back?) to extracting and engineering knowledge The world’s libraries. Connected.
  84. 84. Better living through LOD: role of libraries and librarians • Librarians are uniquely qualified, they just have to get more involved • From producing metadata records (back?) to extracting and engineering knowledge • Do we really want to leave the field to the engineers? • Borges vs. schema.org The world’s libraries. Connected.
  85. 85. Borges‟ taxonomy vs. schema.org: but which one is which? Animals a) belonging to the Emperor b) embalmed c) trained d) piglets e) sirens f) fabulous g) stray dogs h) included in this classification i) trembling like crazy j) innumerables k) drawn with a very fine camelhair brush l) et cetera m) just broke the vase n) from a distance look like flies The world’s libraries. Connected.
  86. 86. Borges‟ taxonomy vs. schema.org: but which one is which? Animals • Intangible a) belonging to the Emperor • Enumeration b) embalmed • JobPosting • Language c) trained • Offer d) piglets • Quantity e) sirens • Rating f) fabulous • Structured Value g) stray dogs h) included in this classification i) trembling like crazy j) innumerables k) drawn with a very fine camelhair brush l) et cetera m) just broke the vase n) from a distance look like flies The world’s libraries. Connected.
  87. 87. Borges‟ taxonomy vs. schema.org: but which one is which? Animals • Intangible a) belonging to the Emperor • Enumeration b) embalmed • JobPosting • Language c) trained • Offer d) piglets • Quantity e) sirens • Rating f) fabulous • Structured Value g) stray dogs • Organization h) included in this classification • EducationalOrganization i) trembling like crazy • CollegeOrUniversity j) innumerables • ElementarySchool • HighSchool k) drawn with a very fine camelhair brush • MiddleSchool l) et cetera • Preschool m) just broke the vase • School n) from a distance look like flies The world’s libraries. Connected.
  88. 88. Better living through LOD: role of libraries and librarians • Librarians are uniquely qualified, they just have to get more involved • From producing metadata records (back?) to extracting and engineering knowledge • Do we really want to leave the field to the engineers? • Borges vs. schema.org The world’s libraries. Connected.
  89. 89. Better living through LOD: role of libraries and librarians • Librarians are uniquely qualified, they just have to get more involved • From producing metadata records (back?) to extracting and engineering knowledge • Do we really want to leave the field to the engineers? • Borges vs. schema.org • Librarians can continued to do what they have always done best ... We have just been handed sharper tools! The world’s libraries. Connected.
  90. 90. Better living through LOD: role of libraries and librarians • Librarians are uniquely qualified, they just have to get more involved • From producing metadata records (back?) to extracting and engineering knowledge • Do we really want to leave the field to the engineers? • Borges vs. schema.org© John Kovalic • Librarians can continued to do what they have always done best ... We have just been handed sharper tools! The world’s libraries. Connected.
  91. 91. Michael Panzerpanzerm@oclc.orgQuestions? The world’s libraries. Connected.

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