© 2010 openlink software, all rights reserved. exploiting linked data by kingsley idehenkingsley...

© 2010 OpenLink Software, All rights reserved.

Exploiting Linked Data

By Kingsley Idehen

Founder & CEO, OpenLink Software

http://kidehen.idehen.net/dataspace/person/kidehen#this

http://www.openlinksw.com/dataspace/organization/openlink#this

Presentation Goals

Demystify Linked Data

Demonstrate the unobtrusive nature

of Linked Data

Explore how Linked Data can

Work for You!


Situation Analysis

User Generated Content is Growing

Exponentially

Enterprise & Individual Connectivity is Growing

The Line Between The Individual & The

Enterprise is Blurring (Social Dimension is now

Palpable)

Access, Integration, Manipulation, Dissemination

of Data, Information, and Knowledge still

underlies our Agility!


Data, Information, and Knowledge

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


Late and loose Schema / Dictionary binding. Powerful mechanism for Data Access, Integration,

Manipulation, and Dissemination via Hyperlinks that’s platform agnostic and exploitable via: Native desktop productivity tools (spreadsheets, report writers,

business intelligence analytics, master data management, word processors, email etc.)

Native collaboration tools Native development tools and frameworks Web based collaboration tools with varying degrees of sociality

(macro and micro blogs, wikis, shared bookmarks, feeds, discussion forums etc.)

Web based development tools and frameworks .

Why is Linked Data Important?


What is Linked Data?

Hyperlink based Structured Data Representation where: Resources consist of fine-grained Data Objects Every Data Object is uniquely identified using a

functional (resolvable) Hyperlink based Name Every Data Object is accessible via a functional

(resolvable) Hyperlink based Address Every Object has Identity distinct from its Access

Address Data Object representation takes the form of a

directed graph pictorial where Attribute=Value pairs coalesce around a Data Object Name.


Contd: What is Linked Data?

Hyperlink based Structured Data Representation where: Object representation is expressible using a variety of

syntaxes that include: RDF family of syntaxes,

Microdata, OData, ASN.1 etc.

Data Object serialization formats for across the wire

transmission are varied and negotiable (if working with

HTTP)


Is Linked Data New?

No! Similar to “data access by reference”

patterns already established by ODBC modulo: Relational “Tables” Model Specificity

Coarse Grained Data Access Granularity

(stops at Table/View level i.e. cannot reference

individual data objects directly)


Contd: Is Linked Data New?

X.500 based Data Source Naming style

Data Representation & Data Access Protocol

Conflation

Operating Systems Specificity (for the most part re.

Driver Manager libraries).


Data Source Name (DSN) Types

ODBC DSN=“CRM”;HOST=crm.example.org;SVT=Oracle;DATABASE=C

RM;TABLE=CUSTOMER

JDBC URL jdbc:openlink://crm.example.org/SVT=Oracle/DATABASE=CRM/

TABLE=CUSTOMER

LSID based Data Object Name for “Elephant-eared kangaroo rat” from Universal Biological Indexer & Organizer urn:lsid:ubio.org:namebank:762537

Data Object Access Address (DSN with one level of indirection) http://kingsley.idehen.net/dataspace/person

Data Object Name/Handle (DSN with > one level of indirection) http://kingsley.idehen.net/dataspace/person#this


Linked Data & ODBC Similarities


The Linked Data Journey

Computer Network Infrastructure Distributed Computing Distributed Databases Compound Documents Distributed Data Objects


Network: Routers link Computers


Internet Layer: Cloud hides Routers


Internet: Computers Link to Documents


Web Layer: Links to Compound Docs


Web Layer: Page Links Hide Compound Docs


Data Layer: Links To Object Descriptors


Data Layer: Links to Object Descriptors Hide Pages


Linked Data Web Materialization 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


http://dbpedia.org/

http://dbpedia.org/

Linked Data Generation from Existing Dynamic Web Content


Linked Data Generation from Existing Web Services


Linked Data Generation from Enterprise Data Sources


Linked Data Generation from Existing Web Content


Linked Data Generation via Linked Middleware


Build or Buy a Linked Data Server capable of: Minting hyperlink based Identifiers that ensure Data Object

Names and Addresses are distinct

Publishing Data Objects that support a wide variety of across-

the-wire data serialization formats

Fine-grained access control lists for controlling access to Data

Objects

Create, Update, Read, and Delete operations

Generating Data Objects from a plethora of existing non Linked

Data oriented data sources

Horizontal Scale in line with Data Object growth.

How Do I Deploy Linked Data?


Linked Data Usage Examples

Enterprise 3.0 Customer, Orders, Employees, Products, Countries, Suppliers,

Competitors etc. are all represented via Data Objects.

Social Media Blog Posts, Tweets, Tags, Comments, Threaded Discussions,

Feeds, Wikis, Bookmarks, Likes, DisLikes, +1’s etc. are all

represented via Data Objects.

Policy Based Security & Access Controls

Agent Info Cards (security tokens) for Software, People, and

Organizations are represented via Data Objects.


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


Linked Data Exploitation: Social-Networking

Construction & Deconstruction of Social-Networks will

become a loose function of data links exposed via: Our Posts (macro and micro blogs)

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.


Linked Data Exploitation: Security & Privacy

Verifiable Identifiers via WebID protocol and Agent

Profiles where:

PKI is decoupled from centralized CA network

Info Cards bear WebID (an Agent Identifier) watermark

which makes federated proof of identity viable.

Access Control Lists

Applied to individuals

Groups / Circles.


Additional Information

OpenLink Software: OpenLink Software OpenLink Virtuoso OpenLink Data Explorer Universal Data Access Drivers http://www.openlinksw.com/blog/~kidehen/ (weblog)

Linking Open Data Community Projects http://dbpedia.org/ -- DBpedia http://lod.openlinksw.com -- LOD Cloud Cache


© 2010 openlink software, all rights reserved. exploiting linked data by kingsley idehenkingsley...

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