Interacting with the Web of Data Dr. Tom Heath Platform Division - - PowerPoint PPT Presentation

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Interacting with the Web of Data Dr. Tom Heath Platform Division - - PowerPoint PPT Presentation

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shared innovation Interacting with the Web of Data Dr. Tom Heath Platform Division Talis Information Ltd tom.heath@talis.com http://tomheath.com/id/me Aberdeen, 6 May 2009 shared innovation About Talis UK-based software company

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Interacting with the Web of Data

  • Dr. Tom Heath

Platform Division Talis Information Ltd tom.heath@talis.com http://tomheath.com/id/me

Aberdeen, 6 May 2009

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About Talis

  • UK-based software company
  • Past: established 40 years ago to deliver large

collaborative metadata systems

  • Present: Very stable with over 100 customers -

public authorities and universities

  • Future: global data platform supporting ours and
  • thers' applications
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Talk Outline

  • From Web of Documents to Web of Data
  • Thing-centric not Document-centric
  • A Task-oriented Foundation for Semantic Web

Applications

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From Web of Documents to Web of Data

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The Web of Linked Documents

HTML HTML HTML API/ XML

untyped links untyped links untyped links

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The Web of Linked Data

Thing typed links typed links typed links typed links Thing Thing Thing Thing Thing Thing Thing Thing Thing

Don't just link the documents, link the things

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Linking Distributed Data Sets

<http://dbpedia.org/resource/Talis_Group> <http://xmlns.com/foaf/0.1/Person#based_near> <http://sws.geonames.org/3333125/>

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The LOD "Cloud" - May 2007

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The LOD "Cloud" - July 2007

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The LOD "Cloud" - August 2007

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The LOD "Cloud" - November 2007

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The LOD "Cloud" – February 2008

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The LOD "Cloud" – September 2008

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The LOD "Cloud" – March 2009

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Thing-centric not Document-centric

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What does it mean to "Browse" the Web of Data?

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http://dbpedia.org/resource/Brandenburg_Gate

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Not Document Browsers, but Thing Browsers

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[Dbpedia Mobile of Brandenburg Gate]

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Browsing in Multiple Dimensions

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Interaction Widgets for Browsing the Web of Data

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A Task-oriented Foundation for Linked Data Applications

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Search and Browse are great for Documents – but what other kinds of tasks can we enable with a Web of Data?

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Why do you visit...?

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Why do you visit...?

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Why do you visit...?

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Why do you visit...?

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11 Platform- and Application-Independent Tasks

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11 Platform- and Application-Independent Tasks

  • Locating
  • Exploring
  • Grazing
  • Monitoring
  • Notifying
  • Sharing
  • Asserting
  • Discussing
  • Evaluating
  • Arranging
  • Transacting
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Locating

  • Looking for an object or chunk of information which

is known or expected to exist

  • e.g. an article from a journal, a colleague's phone

number.

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Exploring

  • Gathering information about a specific concept or

entity to gain understanding or background knowledge

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Grazing

  • Moving speculatively between sources with no

specific information goal in mind, but an expectation that items of interest may be encountered

  • e.g. serial watching of YouTube videos.
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Monitoring

  • Checking known sources that are expected to

change, with the express intention of detecting the nature and occurrence of changes

  • e.g. checking news sites during an election,

checking email accounts for new messages, reading twitter/identi.ca.

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Notifying

  • Informing others of an event in time or a change of

state

  • e.g. emailing/tweeting/txting/IMing friends to tell

them you'll be going out at the weekend.

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Sharing

  • Making an object or chunk of information available

to others

  • e.g. sharing holiday photos via Flickr or MMS;

uploading preprints of papers to an eprints repository.

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Asserting

  • Making statements of fact or opinion
  • e.g. writing a review on Revyu.com, flagging a book

as one that you own.

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Discussing

  • Exchanging knowledge or opinions with others on a

specific topic

  • e.g. posting a comment on a discussion forum or

blog, email mailing lists, microblogging discussions.

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Evaluating

  • Determining whether a particular piece of

information is true, or assessing a number of alternative options

  • e.g. choosing which film to see at the weekend,

based on what's showing, where, and at what time; choosing a new digital camera; checking facts behind a news story.

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Arranging

  • Coordinating with third parties to ensure that

something will take place or will be possible at a certain time

  • e.g. arranging travel and accommodation for an

international conference.

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Transacting

  • Transferring money or credit between two locations
  • e.g. Paying a bill, or transferring money between

accounts.

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Conclusions

  • The Semantic Web is about linked, machine-

readable data – but has significant implications for human-computer interaction.

  • Linked Data applications can replicate linked

document applications, but why limit our horizons?

  • Task-centricity – the key to spotting Semantic Web

killer apps?

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Thank you

  • Acknowledgements

– The Disco and Marbles teams at FU Berlin

  • Further reading

– Sept/Oct 2008 issue of IEEE Internet Computing – http://linkeddata.org/

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RDF

  • The data format for building the Web of Linked Data
  • Resource Description Framework
  • In essence a simple data model
  • It's about writing down relations between things
  • See http://www.w3.org/RDF/
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Uniquely Identifying Things

  • We need to be able to identify things globally and

uniquely

  • URIs (URLs) already provide those capabilities
  • Name things with URIs, specifically http:// URIs
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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 RDF

information.

  • 4. Include RDF statements that link to other URIs so

that they can discover related things.

Tim Berners-Lee 2007 http://www.w3.org/DesignIssues/LinkedData.html

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Participants

  • Massachusetts Institute of

Technology (US)

  • University of Southampton (UK)
  • Freie Universität Berlin (DE)
  • DERI (IE)
  • KMi, Open University (UK)
  • University of London (UK)
  • Universität Hannover (DE)
  • University of Pennsylvania (US)
  • Universität Leipzig (DE)
  • Universität Karlsruhe (DE)
  • Joanneum (AT)
  • University of Toronto (CA)
  • BBC (UK)
  • Talis (UK)
  • Garlik (UK)
  • OpenLink (UK)
  • Zitgist (US)
  • Mondeca (FR)
  • Cyc Foundation (US)
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Geonames

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DBpedia

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Why do you visit...?