Linked Data:

The Building Blocks of the Semantic Web

Ken Fujiuchi, Emerging Technology Librarian

  • Linked Data

  • Semantic Web

  • Examples of Linked Data

  • Discussion

Topics to Cover

The Internet

Fire Hose of Data

Linked Data

A web of "relationships"

Four Rules of Linked Data

"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
     

Use Uniform Resource Identifier (URI)s as names for things

Use HTTP URIs so that people can look up those names

When someone looks up a URI, provide useful information, using the standards (RDF*, SPARQL)

Include links to other URIs, so that they can discover more things

Linked Open Data

Linked data with open license

Linked Data Standards

RDF*, SPARQL, and Others

General framework for describing web metadata

RDF "Triples"

  • Subject

  • Predicate

  • Object

SPARQL

Query language for RDF

Schema and Microdata

The Semantic Web

Navigating the relationships of data

Examples

Bibliographic Framework

Persistent Digital Identifier for Researchers

Unified Authority File for Libraries

Discussion

Questions & Comments

Linked Data: the Building Blocks of the Semantic Web

By Ken Fujiuchi

Linked Data: the Building Blocks of the Semantic Web

The term "Linked Data" refers to a set of best practices for publishing and connecting structured data on the Web. The best way for librarians to understand is to think of Linked Data as MARC for the web. The big difference is that in the web environment the data can be inter-connected to multiple sources, formats, and meta-data, and by aggregating linked data, it is possible to gain more insight to the context and meaning of the data. The concept of linked data is to make the human interpretation of the data machine readable. Examples of data that can be linked include the US data.gov site, OCLC Virtual International Authority File (VIAF), and microformats. This workshop will cover a brief overview of linked data, look at some practical applications, and do some hands on exercises to demonstrate linked data.

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