the web of data - tom heath
DESCRIPTION
Tom Heath's presentation at SSSW 2012TRANSCRIPT
![Page 1: The Web of Data - Tom Heath](https://reader034.vdocuments.mx/reader034/viewer/2022051609/547bac355906b572798b4660/html5/thumbnails/1.jpg)
shared innovation
The Web of Data
Tom Heath
Senior Research ScientistTalis Education Ltd
July 2012, SSSW2012, Cercedilla, Spain
![Page 2: The Web of Data - Tom Heath](https://reader034.vdocuments.mx/reader034/viewer/2022051609/547bac355906b572798b4660/html5/thumbnails/2.jpg)
shared innovation
This talk is about the basics!
![Page 3: The Web of Data - Tom Heath](https://reader034.vdocuments.mx/reader034/viewer/2022051609/547bac355906b572798b4660/html5/thumbnails/3.jpg)
shared innovation
Overview
• Why a Web of Data is not just about data on the Web
• Building blocks of a Web of Data (i.e. Linked Data fundamentals)
![Page 4: The Web of Data - Tom Heath](https://reader034.vdocuments.mx/reader034/viewer/2022051609/547bac355906b572798b4660/html5/thumbnails/4.jpg)
shared innovation
Data on the Web
![Page 5: The Web of Data - Tom Heath](https://reader034.vdocuments.mx/reader034/viewer/2022051609/547bac355906b572798b4660/html5/thumbnails/5.jpg)
shared innovation
Data on the Web
• Takes many different forms
• Falls on a continuum of accessibility/usability, structure, meaning and connectedness...
![Page 6: The Web of Data - Tom Heath](https://reader034.vdocuments.mx/reader034/viewer/2022051609/547bac355906b572798b4660/html5/thumbnails/6.jpg)
shared innovation
Data on the Web
PDF → HTML → Microformats → CSV/XML → Microdata →RDF
![Page 7: The Web of Data - Tom Heath](https://reader034.vdocuments.mx/reader034/viewer/2022051609/547bac355906b572798b4660/html5/thumbnails/7.jpg)
shared innovation
![Page 8: The Web of Data - Tom Heath](https://reader034.vdocuments.mx/reader034/viewer/2022051609/547bac355906b572798b4660/html5/thumbnails/8.jpg)
shared innovation
![Page 9: The Web of Data - Tom Heath](https://reader034.vdocuments.mx/reader034/viewer/2022051609/547bac355906b572798b4660/html5/thumbnails/9.jpg)
shared innovation
![Page 10: The Web of Data - Tom Heath](https://reader034.vdocuments.mx/reader034/viewer/2022051609/547bac355906b572798b4660/html5/thumbnails/10.jpg)
shared innovation
![Page 11: The Web of Data - Tom Heath](https://reader034.vdocuments.mx/reader034/viewer/2022051609/547bac355906b572798b4660/html5/thumbnails/11.jpg)
shared innovation
![Page 12: The Web of Data - Tom Heath](https://reader034.vdocuments.mx/reader034/viewer/2022051609/547bac355906b572798b4660/html5/thumbnails/12.jpg)
shared innovation
![Page 13: The Web of Data - Tom Heath](https://reader034.vdocuments.mx/reader034/viewer/2022051609/547bac355906b572798b4660/html5/thumbnails/13.jpg)
shared innovation
Schema.org
• The Semantic Web has gone mainstream!
• But they're trying to create one ontology for everything!
• Is it linked to anything else?
![Page 14: The Web of Data - Tom Heath](https://reader034.vdocuments.mx/reader034/viewer/2022051609/547bac355906b572798b4660/html5/thumbnails/14.jpg)
shared innovation
Issues, PDF through Microdata
• Structure, parseability– How do we validate what we're extracting?– Is there an underlying data model?
• How do we know what the data means?
• How do you relate parts of the data together?
• How do consumers discover related data?
![Page 15: The Web of Data - Tom Heath](https://reader034.vdocuments.mx/reader034/viewer/2022051609/547bac355906b572798b4660/html5/thumbnails/15.jpg)
shared innovation
Data on the Web != A Web of Data
![Page 16: The Web of Data - Tom Heath](https://reader034.vdocuments.mx/reader034/viewer/2022051609/547bac355906b572798b4660/html5/thumbnails/16.jpg)
shared innovation
If there are no links, it's not a Web!
![Page 17: The Web of Data - Tom Heath](https://reader034.vdocuments.mx/reader034/viewer/2022051609/547bac355906b572798b4660/html5/thumbnails/17.jpg)
shared innovation
The Web of Data
![Page 18: The Web of Data - Tom Heath](https://reader034.vdocuments.mx/reader034/viewer/2022051609/547bac355906b572798b4660/html5/thumbnails/18.jpg)
shared innovation
What is the Web of Data?
• A boundless graph of interconnected data available online...
![Page 19: The Web of Data - Tom Heath](https://reader034.vdocuments.mx/reader034/viewer/2022051609/547bac355906b572798b4660/html5/thumbnails/19.jpg)
shared innovation
What is a Graph?
Tom
Enrico
Talis Education
Spain
SSSW2012
Cercedilla
Italy
Madrid
2012-07-08
employedBy
studentOf
tutorAt
startedOn
bornIn
locatedIn
England
near
capitalOf
locatedIn
![Page 20: The Web of Data - Tom Heath](https://reader034.vdocuments.mx/reader034/viewer/2022051609/547bac355906b572798b4660/html5/thumbnails/20.jpg)
shared innovation
One Graph, Many Documents
Tom
Enrico
Talis Education
Spain
SSSW2012
Cercedilla
Italy
Madrid
2012-07-08
employedBy
studentOf
tutorAt
startedOn
bornIn
locatedIn
England
near
capitalOf
lost Euro2012Final
locatedIn
won
![Page 21: The Web of Data - Tom Heath](https://reader034.vdocuments.mx/reader034/viewer/2022051609/547bac355906b572798b4660/html5/thumbnails/21.jpg)
shared innovation
SubjectObject
Predicate
The RDF Data Model: Triples
![Page 22: The Web of Data - Tom Heath](https://reader034.vdocuments.mx/reader034/viewer/2022051609/547bac355906b572798b4660/html5/thumbnails/22.jpg)
shared innovation
TomTalis
employedBy
The RDF Data Model: Triples
![Page 23: The Web of Data - Tom Heath](https://reader034.vdocuments.mx/reader034/viewer/2022051609/547bac355906b572798b4660/html5/thumbnails/23.jpg)
shared innovation
Why I RDF
• Clear underlying data model
• Linkability baked into the data model
• Ways to express what the data means
• Many different ways to write it (for different use cases)
• Very easily parsed (in some cases)
![Page 24: The Web of Data - Tom Heath](https://reader034.vdocuments.mx/reader034/viewer/2022051609/547bac355906b572798b4660/html5/thumbnails/24.jpg)
shared innovation
RDF Serialisation Formats
• RDFa
• RDF/XML
• N-Triples
• Turtle
• RDF/JSON
![Page 25: The Web of Data - Tom Heath](https://reader034.vdocuments.mx/reader034/viewer/2022051609/547bac355906b572798b4660/html5/thumbnails/25.jpg)
shared innovation
Identifying Things in the Graph
• Use URIs
• But not any old URIs
• HTTP URIs– (almost completely) distributed ownership– anyone (with a credit card) can create/own them– can identify anything– lookup mechanism is baked in
![Page 26: The Web of Data - Tom Heath](https://reader034.vdocuments.mx/reader034/viewer/2022051609/547bac355906b572798b4660/html5/thumbnails/26.jpg)
shared innovation
http://tomheath.com/id/mehttp://www.talis.com/id/company
http://example.org/employedBy
HTTP URIs for Things
![Page 27: The Web of Data - Tom Heath](https://reader034.vdocuments.mx/reader034/viewer/2022051609/547bac355906b572798b4660/html5/thumbnails/27.jpg)
shared innovation
Retrieving Humans over the Web
![Page 28: The Web of Data - Tom Heath](https://reader034.vdocuments.mx/reader034/viewer/2022051609/547bac355906b572798b4660/html5/thumbnails/28.jpg)
shared innovation
Linked Data Hands-On Session
• Goal:– Give practical experience of working with Linked Data from
the Web– Give exposure to different application architectures
• Scenario– Building a travel guide application
• Tools– Curl, LDSpider, Fuseki, Rapper, Squin
![Page 29: The Web of Data - Tom Heath](https://reader034.vdocuments.mx/reader034/viewer/2022051609/547bac355906b572798b4660/html5/thumbnails/29.jpg)
shared innovation
Questions?
• Contact Info– [email protected]– http://tomheath.com/id/me– http://www.talis.com/– @tommyh (twitter)
• Slides– http://tomheath.com/slides/2012-07-cercedilla-
web-of-data.pdf
![Page 30: The Web of Data - Tom Heath](https://reader034.vdocuments.mx/reader034/viewer/2022051609/547bac355906b572798b4660/html5/thumbnails/30.jpg)
shared innovation