Does Linked Data Have to be Open?

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  • 30 January 2017, Lancster Data Conversations

    Reflections from the Pelagios Commons

    Leif Isaksen, Lancaster University Does Linked Data Have to be Open?


  • PleiadesPastPlaceGetty ThesauriPeriodOChronOntologyCanonical Text ServicesSENESCHALSNAPOCREGoogle Ancient Places (OU, Soton)Perseus Digital Library (Tufts)Arachne (Cologne)SPQR (King's College, London)Digital Memory Engineering (AIT)Open Context (UC Berkeley)CLAROS (Oxford)PtolemyMachine (Holy Cross)Ure Museum (Reading)FastiOnline (AIAC)Nomisma (ANS)Regnum Francorum (ISAW/NYU)Ports AntiquesOracc (U. Penn.)Meketre (Vienna)OCRE (ANS/ISAW)SquinchpixORBIS (Stanford)MJBC (Cambridge)ISAW Papers (ISAW)Totenbuch (Bonn/Cologne)PAS (The British Museum)SAWS (KCL/Uppsala/Stockholm/Vienna)Trismegistos (K. U. Leuven)AWMC (Chapel Hill)Encyclopaedia of the Hellenic World DM Project (Drew)Ancient History EncyclopediaDickinson College CommentariesEdinburgh Geoparser (Edinburgh)EDH (Heidelberg)EAGLELGPN (Oxford)...Linked Pasts| An Emerging Digital EcosystemResource Curators

    Concept SchemesConnectingInfrastructure & Support

  • What is Pelagios?

    A DecentralisedCommunity & Infrastructurefor Linked Open Geodata in the Humanities



  • *Connectivity through common references rather than a common schemaWhat Pelagios isnt | One ring to rule them allNot a data aggregatorNot a repository Not a standard data model



  • The concept | Dont Unify the Model Annotate!*



  • PleiadesAncientWorldResources

    Pelagios network | Interlinking different knowledge communities

  • Towards a digital scholarship | Future Footnotes



  • API v.3 query (Peripleo) | Searching by place

  • API v.3 query | The Pelagios network of different traditions

  • Things weve learned | 1. Open partnerships are more efficient than closed consortia Linking data is a social process:

    Involves multiple datasets, organisations, roles

    Inertia in one area has knock-on effects in many others

    Restricting visibility in one area reduces impact in others

    Greater likelihood of failure due to policy decsions

    Open partnerships more likely to:

    Attract new members

    Drive sectoral change

  • Stuff weve learned | 2. Speed-reading?Sources:

    Internet Archive

    Hathi Trust /(Google Books)

    Eighteenth Century Collections Online (2)

    115 books (in 2 days) 17/18/19th Century

    75 Books with historical descriptions of Forres

    40 books with no references

    16 inaccessible

  • OnlineOfflineHathiTrustNat. Lib. ScotlandSenate House Lib., London


  • Stuff weve learned | You cant do it all by yourself Metadata

    Visual content

    Character encoded


    Semantically tagged

    Semantically modelled