Linked Data: from Library Entities to the Web of Data

Richard Wallis

Linked Data: from Library Entities to the Web of DataTechnology Evangelist@rjw

Linked Data

Linked Data

edition

author location

holding

date of publication

classification

publisher

title

source

ISBN

author location

holding

classification

publisher

person place

object concept

organization work

library data:

stored as records

title

authorperson place

object concept

organization work

subjectitemavailability

library data stored as entities

person place

object concept

organization work

library data stored as entitieslibrary knowledge graph

A graph of relationships

What’s Happening on The Web:schema.org

15% Of Web

Use Schema.org

markup!

What’s Happening for Libraries:SchemaBibExtend

• W3C Activity• Schema.org Based

http://www.w3.org/community/schemabibex/

WorldCat Entities

Works

• 197+ million Work descriptions and URIs• Schema.org• RDF Data formats – RDF/XML, Turtle, Triples, JSON-LD

• Links to WorldCat manifestations• Links to Dewey, LCSH, LCNAF, VIAF, FAST• Open Data license• Released April 2014

Part of the Web of Data

• A Technology• Standard on the Web – RDF, URIs, Vocabularies• Identifying and Linking resources on the Web• Important powerful enabling technology

• But only a technology… for the systems folks to worry about• Real benefits flow from: Entity Based Data Architecture

Powered by Linked Data

Linked Data

Entity Based Data

on the Web

Knowledge Graphs

Semantic Search

… beneficial effects for libraries

http://www.theeuropeanlibrary.org/tel4/newsitem/5350

“… more than 80 per cent of these visitors coming from search engines …”

• To get their products/resources in front of users- Next Generation SEO

• It is a shared approach from the Search Engines- But not exclusive to them

Why is the Web Adopting This?(Entities, Semantic Search, Linked Data)

Syndication For Libraries

• Aggregate to a central site - National Library, Consortia, WorldCat.org

• Details published to syndication partners- WorldCat: Amazon, Google Scholar, EasyBib,

EBSCO, OpenLibrary, FindMyLibrary, RedLaser, Yelp, …

• Links from aggregators to individual libraries- Find in a library

Today

Efficient but indirect

WorldCat

Syndication

Year to June 2013

• 77 Million referrals from partners

• 8.7 Million click-through to libraries

Syndication For Libraries

• Individual libraries publish resource data- Linked Data in local discovery interfaces- Links to authoritative hubs – set global context• VIAF, LoC, WorldCat Works, …

• Recognized and identified on the Web- Google, Bing, Yahoo!, Yandex, etc.- Where our users are

• Users referred directly to resources in the library

On the Web of Data

Direct and Effective

Bibliographic Entities in the Web of Data

Cataloging

Integration with the web

Cascading updates More options

Intuitive searching

OCLC Entity Based Data Strategy VIAF, ISNI, FAST Publish Linked Data

WorldCat.org Linked Data Release – using Schema.org

Internal agreement on data strategy

Evangelism

Research & Design with Data Architecture Group

Data mining of WorldCat resources

WorldCat Works Released

2012

2014

Application Integration WorldCat Discovery

Analytics

Discovery API

Cataloging

2015

More Entities Released Person

Organization

Event

Concept

New Products

Continuing Evangelism

New Services

Continuing Innovation

2013

2016

Yeah – but what can I do?• Your resources in the Web of Data

- Contribute to WorldCat

• Start linking your resources - WorldCat Work URIs in your data

• Register institution on the web - Schema.org – Organization/Library- WorldCat Registry- Schema.org across your Website(s)

• Talk to system providers / projects- Not just a Linked Data feature- Exposing Entities in global context

Explore. Share. Magnify.

Richard WallisTechnology Evangelist

Richard.wallis@oclc.org

@rjw

Linked Data: from Library Entities to the Web of Data