[Webinar] Semantic Technologies

Nuxeo & Semantic Technologies Stefane Fermigier - Nuxeo The Web - May 2011Wednesday, May 25, 2011

Agenda • A pragmatic introduction to the Semantic Web • Experience report and demos from NuxeoWednesday, May 25, 2011

1. Introduction to the Semantic WebWednesday, May 25, 2011

PreludeWednesday, May 25, 2011

Source: Mills Davis, “Semantic Social Computing”, sept. 2007Wednesday, May 25, 2011

HistoryWednesday, May 25, 2011

Wednesday, May 25, 2011

Invented the web in 1989 (yeah!)Wednesday, May 25, 2011

Invented the web in 1989 (yeah!) Invented the semantic web in 1994 (duh?)Wednesday, May 25, 2011

Historical perspective • From web 1.0: web of sites and pages, aka the World Wide Web • To web 2.0: web of people and of participation, aka the Social Web (Blogs, RSS, tags, Facebook, Wikipedia, etc.) • To web 3.0: web of data, of meaning and connected knowledge, aka the Semantic WebWednesday, May 25, 2011

Semantics & OntologiesWednesday, May 25, 2011

Wednesday, May 25, 2011

Some examples • FOAF: relationships between people (social network) • SIOC: relationships between websites, articles, blogs, comments • Rich Snippets: syndicate RDFa content for SEO by Google,Yahoo • good-relations: e-commerce (Ebay...) • rNews: metadata for news agencies (AFP, Reuters...)Wednesday, May 25, 2011

How is it related to the Web?Wednesday, May 25, 2011

The traditional Web • A principle: hypertext • A protocol: HTTP • An identiﬁcation scheme: URNs/URIs • A language: HTMLWednesday, May 25, 2011

“To a computer, then, the web is a ﬂat, boring world devoid of meaning” Tim Berners Lee, http://www.w3.org/Talks/WWW94Tim/Wednesday, May 25, 2011

“This is a pity, as in fact documents on the web describe real objects and imaginary concepts, and give particular relationships between them” Tim Berners Lee, http://www.w3.org/Talks/WWW94Tim/Wednesday, May 25, 2011

“Adding semantics to the web involves two things: allowing documents which have information in machine-readable forms, and allowing links to be created with relationship values.” Tim Berners Lee, http://www.w3.org/Talks/WWW94Tim/Wednesday, May 25, 2011

“The Semantic Web is not a separate Web but an extension of the current one, in which information is given well-deﬁned meaning, better enabling computers and people to work in cooperation.” Tim Berners Lee, http://www.w3.org/Talks/WWW94Tim/Wednesday, May 25, 2011

The traditional Web • A principle: hypertext • A protocol: HTTP • An identiﬁcation scheme: URNs/URIs • A language: HTMLWednesday, May 25, 2011

The semantic Web • A principle: hypertext • A protocol: HTTP • An identiﬁcation scheme: URNs/URIs • A language: HTML RDFWednesday, May 25, 2011

The W3C “Layer Cake”Wednesday, May 25, 2011

The W3C “Layer Cake” Already standardizedWednesday, May 25, 2011

URIs and the Web of Things • URIs (Unique Resource Identiﬁers) are used to identify things (also called entities) in the real world • For instance: people, places, events, companies, products, movies, etc.Wednesday, May 25, 2011

The RDF model RDF is used to describe relationships between objects, identiﬁed by their URIs Predicate Subject ObjectWednesday, May 25, 2011

Example Source: http://www.slideshare.net/AntidotNet/web-smantique-web-de-donnes- web-30-linked-data-quelques-repres-pour-sy-retrouverWednesday, May 25, 2011

RDF serialization As XML: Others, ex: N3:Wednesday, May 25, 2011

SPARQL • Query language for RDF databases • Several implementations • OSS: Apache Jena, Sesame, 4Store, Virtuoso, Mulgara, Redland, Open Anzo... • Proprietary: 5Store, AllegroGraph RDFStore, Stardog, Dydra, OWLIM... • More expressive than SQL, scalability is still an open questionWednesday, May 25, 2011

SPARQL SampleWednesday, May 25, 2011

Where and how to ﬁnd these data?Wednesday, May 25, 2011

Solution 1: “Lift” • One can use HTML scrapping and natural language processing (NLP) technique to extract semantic information from existing content / sites • Generic solutions: OpenCalais, Zemanta, Apache Stanbol • Pro: no need to change existing content • Con: error prone, needs human checksWednesday, May 25, 2011

Example: DBPediaWednesday, May 25, 2011

Solution 2: export • RDFa and microformats are used to embed semantic information (expressed using the RDF model) into regular web pages • RDFa does it using existing (rel) and additional (about, property, typeof) attributes • Microformats only use usual HTML attributes (class)Wednesday, May 25, 2011

Solution 3: reuse • Linked Open Data: (usually large) data repositories available on the web (for free or not), expressed using the RDF model • Interoperability between these repositories (their ontologies) must be deﬁnedWednesday, May 25, 2011

Linked Open Data in 2007“Linking Open Data cloud diagram, by Richard Cyganiak and Anja Jentzsch. http://lod-cloud.net/”Wednesday, May 25, 2011

2008“Linking Open Data cloud diagram, by Richard Cyganiak and Anja Jentzsch. http://lod-cloud.net/”Wednesday, May 25, 2011

Good for Enterprise apps too!Diagram source: http://www.w3.org/2007/Talks/0130-sb-W3CTechSemWeb/Wednesday, May 25, 2011

Why now?Wednesday, May 25, 2011

Key Enablers Open Data and Linked Online Data Advances in automatic content analysis (linguistics, image processing) and machine learning Classical logic and classical AI Computing power (Moore’s law + MapReduce)Wednesday, May 25, 2011

The technologies and data are available, Let’s put them to use!Wednesday, May 25, 2011

2. Nuxeo & Semantic ECMWednesday, May 25, 2011

NuxeoWednesday, May 25, 2011

Nuxeo: an open source ECM vendor Our Focus is Enterprise Content Management ECM as a Platform for Content Applications Open Source as Efﬁcient Development Model Modern architecture for 21st Century business “Lean, mobile, social, interoperable” A Social Marketplace in action Innovation driven by community of customers, partners, and our core developersWednesday, May 25, 2011

Nuxeo ECM - From Platform to Products Construction Media Government Life Sciences Business Solutions Correspondence Contracts Records Invoice Processing Management Management Management Case Structured Horizontal Document Digital Asset Content Management Document Packages Management Management Framework Server Aggregator Nuxeo Enterprise Platform Complete set of components covering all aspects of ECM Platform Content Infrastructure Nuxeo Core Lightweight, scalable, embeddable content repository 49Wednesday, May 25, 2011

Major CustomersWednesday, May 25, 2011

GoalsWednesday, May 25, 2011

Goals for Semantic ECM Repurpose existing content Improve search and collaboration Make information contextual Extract and use information from your content Make your content smarter!Wednesday, May 25, 2011

Semantic ECMWednesday, May 25, 2011

Semantic ECM Text Sound Image Video ContentWednesday, May 25, 2011

Semantic ECM Metadata Text Sound Tags Entities Image Relations Video Reasoning Content MeaningWednesday, May 25, 2011

Architectural Challenge Content Stack vs. Knowledge CakeWednesday, May 25, 2011

Business value from semantic ECM Efﬁciency gains: 20% to 90% (ex: in search, collaboration) Effectiveness gains: better returns from your assets (ex: news and images from AFP) Strategic edge: growth, value capture, new services, gain unfair strategic advantage (ex: vertical ontologies for CEVAs / CCAs)Wednesday, May 25, 2011

Demo 56Wednesday, May 25, 2011

How does it work?Wednesday, May 25, 2011

IKS project • European project under the FP7, with 13 partners (6 SMEs) and a 8.5 MEUR budget • Goal: create a semantic software “stack” that will be used by CMS vendors to add semantic features to their products • Started in Jan. 2009, will last until Dec. 2012 • First tangible result: Apache Stanbol, already integrated in a Nuxeo plugin 58Wednesday, May 25, 2011

59Wednesday, May 25, 2011

Stanbol: a semantic engine • From unstructured content to Knowledge • Language guessing • Topic classiﬁcation (Business, Sports, Media, ...) • Named Entities extraction and linking • Relationships and properties extraction • Pluggable with proprietary engines (ex: Temis)Wednesday, May 25, 2011

RESTful is Beautiful 63Wednesday, May 25, 2011

= Semantic Engines (Apache OpenNLP) + Fast Linked Data local index (Apache Solr) + Semantic Rule Engine 64 (Apache Jena)Wednesday, May 25, 2011

Apache Stanbol Engine 1 DBpedia Engine 2 2 1 Engine 3 Freebase Nuxeo DM 3 addon Geonames LDAP Local IT infrastructure (LAN) 65Wednesday, May 25, 2011

How to try it?Wednesday, May 25, 2011

https://connect.nuxeo.com/nuxeo/site/marketplace/category/semanticWednesday, May 25, 2011

Notes • Nuxeo EP 5.4.2 (next week) will have signiﬁcant improvements to enable new features of the semantic plugins • Source code here: http://hg.nuxeo.org/ addons/nuxeo-platform-semantic-entities/ • Join us at the IKS Paris Workshop on July 5-6 to learn much more about Nuxeo and semantic technologies!Wednesday, May 25, 2011

Resources • http://iks-project.eu • http://stanbol.demo.nuxeo.com • http://incubator.apache.org/stanbol • http://blogs.nuxeo.com/dev • http://hadoop.apache.org/ • http://incubator.apache.org/opennlp/ 69Wednesday, May 25, 2011

Questions? 70Wednesday, May 25, 2011

Up Next! Live Demo - Nuxeo Studio June 1, 2011 Building Packages for the Nuxeo Marketplace Juen 8, 2011 71Wednesday, May 25, 2011

http://www.nuxeo.com	71
http://staging.nuxeo.com	14
http://thinnk.net	13
http://www.thinnk.net	13

[Webinar] Semantic Technologies

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