web13 semantic web: retrospective si perspective

Dr. Sabin Buraga http://www.purl.org/net/busaco

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Web semantic

Dr. SabinCorneliu BuragaFacultatea de Informatica

Universitatea “A.I.Cuza” – Iasi, Romania

http://www.infoiasi.ro/~busaco/



Webul semanticretrospective & perspective



“Analfabetul viitorului nu va mai ficel care nu stie sa citeasca;

va fi cel care nu stie sa inteleaga.”

Alvin Toffler



ce este web‐ul semantic

Conform Tim Berners‐Lee (2006):data interoperability across applications and

organizations (for IT)

a set of interoperable standardsfor knowledge exchange

an architecture for interconnected communitiesand vocabularies




Principii de independenta a datelor(M. Daconta, 2003):

datele sunt mai importante decit aplicatiile

valoarea datelor creste proportional cu numarul de conexiuni pe care o resursa le are cu altele

relatiile dintre resurse nu trebuie sa se bazezepe probabilitate sau noroc




Principii de independenta a datelor(M. Daconta, 2003):

modelarea datelor trebuie sa tina cont de sintaxa, de semantica si de pragmatica

modelarea datelor face implicitul explicit

modelarea datelor trebuie sa se realizezeintr‐o maniera descentralizata & standardizata



meta‐date si relatii descrise semanticin cadrul si intre documentele Web



Web‐ul semantic ofera un punct de vedere abstract “ascunde” documentele



SW ofera premisele modelarii conceptuale a resurselor

relatia atomica(modelul RDF)



Crearea de “punti” intre aplicatii via servere virtualeprocesind triple RDF (Tim Berners‐Lee, 2007)

www.w3.org/2007/Talks/1211whittbl/




Mit:the semantic Web technology is Description Logic

OWL este doar un limbaj al Web‐ului semanticaplicatiile care doresc sa exprime diverse expresivitati

il pot utiliza

trebuie insa asigurata interoperabilitateafolosirea si altor limbaje via URI

nu trebuie reinventata functionalitateadeja oferita de standardele actuale




Mit: SW is about public datatehnologiile Web‐ului semantic se pot aplica

in cazul datelor la nivel: personal – blog, calendare de evenim. personale, adrese,…

de grup – retele sociale, wiki‐uri, review‐uri, citari etc.

de agentie – mediatizare: stiri, calendare publice,…

de enterprise – ebusiness, intranet, extranet, ERP, CRM, workflow‐uri si altele




Alte mituri (Berners‐Lee, 2006):

the semantic Web is metadata for classifying documents





the semantic Web is about handannotatedWeb pages

such pages are interesting, but not the mainstay of semantic Web: too much trouble!





the semantic Web is mainly about contentextracted from text

no, it is primarily an interlinguafor relational data and logic

bridges will always be important





the semantic Web is about making one big ontology

the semantic Web is about a fractal messof interconnected ontologies





the semantic Web ontologies must all be consistent

only the parts I am using together




Web: You know, He is always talking aboutthe Semantic Web, but to be honest, I still don’t get it.

Semantics: Really? The great giant graph, information available for machines to process,

Webscale intelligent applications,…Web: Yeah, of course, but this is all geek things for geeks.

What about the real users?Mathieu d’Aquin & Vanessa Lopez

Nodalities, #4 (2008)



ce va fi web‐ul semantic

Tranzitia spre Web‐ul semantic al oamenilor(human semantic Web)

conform Vossen, Lytras & Koudas, 2007

tehnologiile pe care se bazeazaWeb‐ul semanticofera premisele unei tranzitii

de la knowledge push la knowledge pull,in termenii modelelor de interactiune sociala




Oamenii codifica & partajeaza cunostintelevia limbaj(e):

natural: documente, speech, naratiunivizual: tabele, grafice, harti, ilustratii, fotografii,…

formal: modele, scheme, logica, matematica, notatii etc.comportamental: cod‐sursa, specificatii, functii, algoritmi

senzorial: user experience, interactiuni om‐masina

conform (M. Davies, 2007) & Project10x




Semantici:Implicite, formale, powerful

Aspecte‐cheie ale Web‐ului semantic:Meaning, infrastructura sigura, ontologii, knowledge flow, colaborare

Arii de aplicabilitate & contexte:Societatea bazata pe cunoastereEbusiness, egovernment, elearningStiinte ale vietii, sanatate (ehealth)Biblioteci digitaleSemantic social media…

Integrare

Inter‐operabilitate

Proiectare & implementare

Strategii




Tendinte (Mills Davies, 2008):semantic user experience: mobility, semantic browsing

semantic content tools: semantic authoring, semantic content generation, context awareness

knowledge representationsemantic social computing: semantic email, semantic

blog, semantic desktop & webtop, semantic IMsemantic collaboration: semantic wikis, semantic agents,

collective knowledge systems, semantic CMS




Tendinte (Mills Davies, 2008):semantic storage: triple stores, semantic DBMS

semantic transport: serviceoriented knowledge utilities, semantic security, semantic mobility

semantic processing & programmingknowledgebased applications: semantic mashups, knowledge centered engineering, “in silico” science

semantic architectures: semantic enterprise architecture, semantic SOA, semantic interoperabilitysemantic enterprise processes




Tendinte (Mills Davies, 2008):semantic software development: semantic application

platforms, semantic social OS, semantic multiagent systems, doityourself services,

goaloriented software engineeringintelligent systems: robots, blogjects, machine learningautomated reasoning: multiple types of inferencing,

logics for uncertainty, conflicts & valuessemantic ecosystem(s): semantic cloud computing,knowledge commerce, autonomic intellectual property



“Concluzii”

Radar Networks & Nova Spivack, 2007 –www.radarnetworks.com



Rezumat

Webul semantic: prezent & viitor



Multsucces!

web13 semantic web: retrospective si perspective

Education