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Linked Data Planet Key Note

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Information about Linked Data Planet Key Note
Science-Technology

Published on June 17, 2008

Author: rumito

Source: authorstream.com

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Creating, Deploying, and Exploiting Linked Data : © 2008 OpenLink Software, All rights reserved. Creating, Deploying, and Exploiting Linked Data By Kingsley Idehen Founder & CEO, OpenLink Software Presentation Goals : © 2008 OpenLink Software, All rights reserved. Presentation Goals Demystify Linked Data Demonstrate the unobtrusive nature of Linked Data Explore how Linked Data can Work for You! Situation Analysis : Situation Analysis User-generated content is growing exponentially Enterprise & individual connectivity is growing The line between the Individual & the Enterprise is blurring The discovery & exploitation of Data, Information, and Knowledge remain the ultimate critical success factors But there are still only 24 hours in a day! © 2008 OpenLink Software, All rights reserved. A Few Definitions : A Few Definitions What is Data ? How we express observation What is Information? How we use Context to perceive observation What is Knowledge? How we Comprehend what we perceive © 2008 OpenLink Software, All rights reserved. Important (IMHO) Note! : Important (IMHO) Note! Data, Information, and Knowledge are subjective terms Context [of the beholder] ultimately determines what’s actually what Data is the lowest common denominator Everything we do in IT ultimately comes down to Access, Manipulation, and Dissemination of Data across a spectrum of Context vectors. © 2008 OpenLink Software, All rights reserved. What is Data Access by Reference? : What is Data Access by Reference? How you access Data using Data Source Names (Identifiers) Identifiers may be Natural (human readable) or Synthetic (machine readable) © 2008 OpenLink Software, All rights reserved. Data Source Name Examples : Data Source Name Examples ODBC DSN=“CRM”;HOST=crm.example.org;SVT=Oracle;DATABASE=CRM;TABLE=CUSTOMER JDBC URL jdbc:openlink://crm.example.org/SVT=Oracle/DATABASE=CRM/TABLE=CUSTOMER LSID URN for “Elephant-eared kangaroo rat” from Universal Biological Indexer & Organizer urn:lsid:ubio.org:namebank:762537 Information Resource Uniform Resource Identifiers (URIs) http://myopenlink.net/dataspace/person/kidehen (Profile Page) Data Web Entity (that isn’t an Information Resource) Identifier http://myopenlink.net/dataspace/person/kidehen#this (this Entity that is primary topic of the Profile Page above) © 2008 OpenLink Software, All rights reserved. What is Linked Data? : What is Linked Data? A term coined by Tim Berners-Lee that describes HTTP-based Data Access by Reference for the Web A richer Linking mechanism for the Web that takes us from Hypertext Links (Document to Document) to Hyperdata Links (across things that documents are about) © 2008 OpenLink Software, All rights reserved. Why is Linked Data Important? : It exposes the compound nature of Web Resources It provides an Open Data Access & Connectivity mechanism for the Web It delivers a powerful mechanism for meshing disparate and heterogeneous data sources It offers an unobtrusive mechanism for unveiling the prowess of the broader Semantic Web vision. Why is Linked Data Important? © 2008 OpenLink Software, All rights reserved. Linked Data Tenets : Linked Data Tenets Give Names to things you describe so that they become uniquely Identifiable Resources (Data Sources) Incorporate HTTP into your naming scheme so that you extend data access scope to your internal networks and/or the World Wide Web © 2008 OpenLink Software, All rights reserved. Contd: Linked Data Tenets : Contd: Linked Data Tenets Use the RDF Data Model to describe your Resources Use HTTP-based Resource Names (URIs) when creating RDF Data Model records (Triples) © 2008 OpenLink Software, All rights reserved. Linked Data & ODBC Similarities : Linked Data & ODBC Similarities An ODBC Data Source Name (DSN) is equivalent to a Linked Data URI An ODBC Data Source is equivalent to a Linked Data Resource. © 2008 OpenLink Software, All rights reserved. Slide 13:  Linked Data & ODBC Similarities © 2008 OpenLink Software, All rights reserved. Linked Data & ODBC Differences : Linked Data & ODBC Differences Open Database Connectivity Lacks: Model Dexterity (tightly bound to Relational Model) Reference Granularity (stops at Table/View level) HTTP protocol component in Naming Scheme (vulnerable to DBMS engine, Host OS, Network Protocol, and other infrastructural specificity) © 2008 OpenLink Software, All rights reserved. What is the Linked Data Web? : What is the Linked Data Web? A World Wide Web of Named Data Sources (describing Documents or other Things) A Giant Global Graph of Named Data Sources where Hyperdata Links provide the Link Tapestry A evolution of the Web where the Description of anything is discernable via it’s Data Source Name (URI). © 2008 OpenLink Software, All rights reserved. How will Linked Data Materialize on the Web? : How will Linked Data Materialize on the Web? Generated “on the fly” via RDF middleware from: Existing Web Pages (POSH, Microformats, eRDF, RDFa, GRDDL) Web 2.0 Data Spaces (Social Networks, Blogs, Wikis, Bookmarks, Online Discussions / Conversations, etc.) Web Services (SOAP and REST) Enterprise Data Sources SOA oriented Web Services XML based Data Warehouses and Views Enterprise Databases (ODBC, JDBC, OLE-DB, ADO.NET, XMLA, Native CLIs) Community driven extraction efforts DBpedia, Bio2RDF, and many other Linking Open Data projects © 2008 OpenLink Software, All rights reserved. Slide 17: © 2008 OpenLink Software, All rights reserved.  Linked Data Generation from Existing Dynamic Web Content Slide 18: © 2008 OpenLink Software, All rights reserved.  Linked Data Generation from Existing Web Services Slide 19: © 2008 OpenLink Software, All rights reserved.  Linked Data Generation from Enterprise Data Sources Slide 20: © 2008 OpenLink Software, All rights reserved.  Linked Data Generation from Relational Databases Slide 21: © 2008 OpenLink Software, All rights reserved.  Linked Data Generation from Existing Web Content How Do I Deploy Linked Data? : Obtain a Linked Data Server capable of: Creating URL rewrite-rules for handling Content Negotiation requests Associating URL rewrite-rules with RDF data store queries using SPARQL Generating Information Resources “on the fly” that provide physical provenance to Resource Descriptions Minting dereferenceable HTTP URIs (including wrapper/proxy URIs for non RDF Linked Data Source) Incorporating RDFization for transforming non-RDF Data into RDF) How Do I Deploy Linked Data? © 2008 OpenLink Software, All rights reserved. Slide 23: Linked Data Access Mechanics © 2008 OpenLink Software, All rights reserved. Linked Data Publishing Tenets : When a “User Agent” requests (X)HTML, make a “best effort” to expose associated RDF data via any of the following: Use the <head/> section’s <link/> tag to expose RDF Data Source Names Use simple RDFa or eRDF statements to embedded RDF Data Source Names within the (X)HTML via the <head/> section’s <profile/> tag for eRDF or RDFa use declaration and <link/> tag to expose RDF Data Source Names If XHTML, use GRDDL to glean RDF from the source document via a combination of the GRDDL use declaration in the <head/> section’s <profile/> tag and an XSLT stylesheet exposed via the <link/> tag When a “User Agent” requests XML Use GRDDL to Identity Transformation Stylesheet Linked Data Publishing Tenets © 2008 OpenLink Software, All rights reserved. Linked Data Usage Examples : Linked Data Usage Examples OpenLink Data Spaces Zitgist Data Services Bio2RDF DBpedia Library of Congress US Census Data Many others in the LOD Cloud © 2008 OpenLink Software, All rights reserved. Linked Data Exploitation: Web : Linked Data Exploitation: Web Data Silos will Die! Context [as opposed to Content] becomes King! Meshing (natural data linking) will replace Mashing (brute-force data linking) Crystallization of Information At Your Fingertips vision without platform comprises © 2008 OpenLink Software, All rights reserved. Linked Data Exploitation: Social-Networking : Linked Data Exploitation: Social-Networking Construction & Deconstruction of Social-Networks will become a loose function of data links exposed via: Our Tags Our Interests Our Realms of Discourse (comments associated with Blogs, Wikis, and other Data Spaces on the Web) It’s Community, Stupid! Community-building prowess will express Vitality Vitality will be an expression of “Link Density” Co-opetition will thrive. © 2008 OpenLink Software, All rights reserved. Slide 28: © 2008 OpenLink Software, All rights reserved.  A Personal Linked Data Space Slide 29: © 2008 OpenLink Software, All rights reserved.  Collective Intelligence Linked Data Exploitation: Enterprise : Linked Data Exploitation: Enterprise Conceptual interaction with Heterogeneous Data Sources that transcends DBMS engine models DBMS engine vendors APIs SOA Web Services Host Operating Systems Simply “Peel-Back” the containment of Applications by integrating Linked Data Source Names into ERP Systems CRM Systems Enterprise Collaboration Systems HR Systems Marketing Systems Web Content Management & Corporate Communications Systems © 2008 OpenLink Software, All rights reserved. Linked Data — The Web Done Right? : Linked Data — The Web Done Right? Yes, because it facilitates: Broadening our perspectives (pivoting on data behind documents) Serendipitous Discovery of relevant things via the Web Exploitation of collective intelligence via Discourse, Discovery, and Participation © 2008 OpenLink Software, All rights reserved. Additional Information : Additional Information OpenLink Software: http://www.openlinksw.com/ http://virtuoso.openlinksw.com/ http://www.openlinksw.com/blog/~kidehen (weblog) Linking Open Data Community Projects http://linkeddata.org/ http://dbpedia.org/ © 2008 OpenLink Software, All rights reserved.

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