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What flavor of linked data is best for your collec6on? Debra Shapiro UWMadison SLIS

What flavor of linked data is best for your collection?

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Presentation at the Upper Midwest Digital Collections Conference August 19, 2014

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What  flavor  of  linked  data  is  best  for  your  collec6on?  

Debra  Shapiro  UW-­‐Madison  SLIS  

 

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…  using  other  methods.  

…  useful  It  builds  upon  standard  Web  technologies  such  as  HTTP,  RDF  and  URIs,  but  rather  than  using  them  to  serve  web  pages  for  human  readers,  it  extends  them  to  share  informaHon  in  a  way  that  can  be  read  automaHcally  by  computers.  This  enables  data  from  different  sources  to  be  connected  and  queried.  

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Strawman  

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make  your  stuff  available  on  the    Web  (whatever  format)  under  an    open  license    make  it  available  as  structured  data    (e.g.,  Excel  instead  of  image  scan  of  a    table    use  non-­‐proprietary  formats    (e.g.,  CSV  instead  of  Excel)    use  URIs  to  denote  things,  so  that    people  can  point  at  your  stuff    link  your  data  to  other  data  to    provide  context      h[p://5stardata.info/    

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h[p://vimeo.com/36752317    

What  is  europeana?  

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•  T-­‐Shirt  is  the  subject  (resource  you’re  describing)  •  Color  is  the  property  (relaHonship)  •  White  is  the  object        

h[p://www.linkeddatatools.com/introducing-­‐rdf    

RDF  triples,  HUH??  

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Richard  Wallis,  for  OCLC,  2014    

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To  summarize:  

•  Linked  data  is:  •  Method  for  gecng  authoritaHve  descripHve  data  from  Libraries,  Archives  &  Museums  out  onto  the  web,  so  that  it  can  be  recombined  with  all  the  other  data  stuff  garbage  out  there  

•  Two  main  problems    brain  benders  for  LAMs  community:  

•  Linked  data  is  atomized  •  Lined  data  is  dynamic  

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Just  two  flavors  today  

1.   RDFa/HTML  microdata  –  Schema.org  –   OCLC’s  deployment  of  Schema.org  

2.   RDF/XML  – BIBFRAME  – Europeana      

 

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What  is  Schema.org?  

“ html  tags,  that  webmasters  can  use  to  markup  their  pages  in  ways  recognized  by  major  search  providers  ”

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What  is  BIBFRAME?  

“In  addiHon  to  being  a  replacement  for  MARC,  BIBFRAME  serves  as  a  general  model  for  expressing  and  connecHng  bibliographic  data.  A  major  focus  of  the  iniHaHve  will  be  to  determine  a  transiHon  path  for  the  MARC  21  formats  while  preserving  a  robust  data  exchange  that  has  supported  resource  sharing  and  cataloging  cost  savings  in  recent  decades.”

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RDFa/HTML  vs.  RDF/XML  •  Linked  data  in  HTML  way  to  enrich  the  html  of  web  pages  –  that  can  be  displaying  collecHon  informaHon  –  Schema.org  originally  designed  for  e-­‐commerce;  vocabulary  being  extended  for  cultural  heritage  informaHon  

–  OCLC  doing  this  automaHcally    •  RDF/XML  way  to  re-­‐encode  metadata  in  a  linked  data  consumeable  way  –  BIBFRAME  is  an  experiment  to  convert  MARC  to  linked  data  in  RDF/XML  

–  ExisHng  MARC  data  can  be  batch  transformed  to  BIBFRAME;  Europeana  also  harvests  metadata  &  re-­‐encodes  

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What  I  recommend  

•  Become  a  joiner  –  –  Expose  metadata  –  Big  iniHaHves  like  europeana  and  DPLA  can  ingest  all  kinds  of  metadata  –  including  MARC  

– OCLC  is  shiling  everyone  to  the  WorldShare  Metadata  CollecHon  Manager  –  MARC,  MARCXML,  MODS,  DC,  all  kinds  of  data  from  publishers  and  Hathi  Trust  …  

•  Educate  yourself  –  see  bibliography  •  Advocate  for  openness  

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What  I  believe  

•  Don’t  lose  sleep!  •  Linked  data  is  for  discovery  •  Content,  Data  &  ProperHes  -­‐  RULE  •  <  >,  encoding,  screens  &  screens  of  RDF,  Do  not  ma[er  as  much  as  Quality  metadata  that  can  be  shared  

•  CONTEXT  Linked  data  is  HUGE  opportunity  for  librarians,  archivists,  collecHon  managers    

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Why  should  we  be  interested  in  doing  this  again?  

•  Get  LAMs  data  out  on  the  open  web?  •  Make  Google  happy?  •  Context?  •  Openness  and  accessibility?  •  Torture  librarians  &  collecHon  managers  ….  "    All  of  the  above  

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LODLAM  Training  Day  $75  

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Sites  cited  « W3C  h[p://www.w3.org/standards/semanHcweb/data  

« Linkeddata.org  h[p://linkeddata.org/      « What  is  linked  data  video  h[p://vimeo.com/36752317      « Schema.org  h[p://schema.org      « European  Linked  Open  data  h[p://pro.europeana.eu/linked-­‐open-­‐data    

 

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Sites  cited  « BIBFRAME  h[p://bibframe.org/  

« LoC  Linked  Data  Service  h[p://id.loc.gov/      «   Zepheira/LibHub  h[p://www.libhub.org/    « WorldCat  Linked  Data  Vocabularies  

h[ps://www.oclc.org/developer/develop/linked-­‐data/worldcat-­‐vocabulary.en.html    

 « Linked  data  demysHfied  h[p://goo.gl/vezuZw  

«   LODLAM  h[p://lodlam.net/    «   Zepheira/LibHub  h[p://www.libhub.org/       45