web13 semantic web: retrospective si perspective
DESCRIPTION
Retrospective si perspective referitoare la Web-ul semantic.TRANSCRIPT
Dr. Sabin Buraga http://www.purl.org/net/busaco
Semantic Web <?xml version=“1.0” ?><curs desc=“…” />
Web semantic
Dr. SabinCorneliu BuragaFacultatea de Informatica
Universitatea “A.I.Cuza” – Iasi, Romania
http://www.infoiasi.ro/~busaco/
Dr. Sabin Buraga http://www.purl.org/net/busaco
Semantic Web <?xml version=“1.0” ?><curs desc=“…” />
Webul semanticretrospective & perspective
Dr. Sabin Buraga http://www.purl.org/net/busaco
Semantic Web <?xml version=“1.0” ?><curs desc=“…” />
“Analfabetul viitorului nu va mai ficel care nu stie sa citeasca;
va fi cel care nu stie sa inteleaga.”
Alvin Toffler
Dr. Sabin Buraga http://www.purl.org/net/busaco
Semantic Web <?xml version=“1.0” ?><curs desc=“…” />
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
Dr. Sabin Buraga http://www.purl.org/net/busaco
Semantic Web <?xml version=“1.0” ?><curs desc=“…” />
ce este web‐ul semantic
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
Dr. Sabin Buraga http://www.purl.org/net/busaco
Semantic Web <?xml version=“1.0” ?><curs desc=“…” />
ce este web‐ul semantic
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
Dr. Sabin Buraga http://www.purl.org/net/busaco
Semantic Web <?xml version=“1.0” ?><curs desc=“…” />
meta‐date si relatii descrise semanticin cadrul si intre documentele Web
Dr. Sabin Buraga http://www.purl.org/net/busaco
Semantic Web <?xml version=“1.0” ?><curs desc=“…” />
Web‐ul semantic ofera un punct de vedere abstract “ascunde” documentele
Dr. Sabin Buraga http://www.purl.org/net/busaco
Semantic Web <?xml version=“1.0” ?><curs desc=“…” />
SW ofera premisele modelarii conceptuale a resurselor
relatia atomica(modelul RDF)
Dr. Sabin Buraga http://www.purl.org/net/busaco
Semantic Web <?xml version=“1.0” ?><curs desc=“…” />
Crearea de “punti” intre aplicatii via servere virtualeprocesind triple RDF (Tim Berners‐Lee, 2007)
www.w3.org/2007/Talks/1211whittbl/
Dr. Sabin Buraga http://www.purl.org/net/busaco
Semantic Web <?xml version=“1.0” ?><curs desc=“…” />
ce este web‐ul semantic
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
Dr. Sabin Buraga http://www.purl.org/net/busaco
Semantic Web <?xml version=“1.0” ?><curs desc=“…” />
ce este web‐ul semantic
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
Dr. Sabin Buraga http://www.purl.org/net/busaco
Semantic Web <?xml version=“1.0” ?><curs desc=“…” />
ce este web‐ul semantic
Alte mituri (Berners‐Lee, 2006):
the semantic Web is metadata for classifying documents
Dr. Sabin Buraga http://www.purl.org/net/busaco
Semantic Web <?xml version=“1.0” ?><curs desc=“…” />
ce este web‐ul semantic
Alte mituri (Berners‐Lee, 2006):
the semantic Web is about handannotatedWeb pages
such pages are interesting, but not the mainstay of semantic Web: too much trouble!
Dr. Sabin Buraga http://www.purl.org/net/busaco
Semantic Web <?xml version=“1.0” ?><curs desc=“…” />
ce este web‐ul semantic
Alte mituri (Berners‐Lee, 2006):
the semantic Web is mainly about contentextracted from text
no, it is primarily an interlinguafor relational data and logic
bridges will always be important
Dr. Sabin Buraga http://www.purl.org/net/busaco
Semantic Web <?xml version=“1.0” ?><curs desc=“…” />
ce este web‐ul semantic
Alte mituri (Berners‐Lee, 2006):
the semantic Web is about making one big ontology
the semantic Web is about a fractal messof interconnected ontologies
Dr. Sabin Buraga http://www.purl.org/net/busaco
Semantic Web <?xml version=“1.0” ?><curs desc=“…” />
ce este web‐ul semantic
Alte mituri (Berners‐Lee, 2006):
the semantic Web ontologies must all be consistent
only the parts I am using together
Dr. Sabin Buraga http://www.purl.org/net/busaco
Semantic Web <?xml version=“1.0” ?><curs desc=“…” />
ce este web‐ul semantic
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)
Dr. Sabin Buraga http://www.purl.org/net/busaco
Semantic Web <?xml version=“1.0” ?><curs desc=“…” />
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
Dr. Sabin Buraga http://www.purl.org/net/busaco
Semantic Web <?xml version=“1.0” ?><curs desc=“…” />
ce va fi web‐ul semantic
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
Dr. Sabin Buraga http://www.purl.org/net/busaco
Semantic Web <?xml version=“1.0” ?><curs desc=“…” />
ce va fi web‐ul semantic
Dr. Sabin Buraga http://www.purl.org/net/busaco
Semantic Web <?xml version=“1.0” ?><curs desc=“…” />
ce va fi web‐ul semantic
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
Dr. Sabin Buraga http://www.purl.org/net/busaco
Semantic Web <?xml version=“1.0” ?><curs desc=“…” />
ce va fi web‐ul semantic
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
Dr. Sabin Buraga http://www.purl.org/net/busaco
Semantic Web <?xml version=“1.0” ?><curs desc=“…” />
ce va fi web‐ul semantic
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
Dr. Sabin Buraga http://www.purl.org/net/busaco
Semantic Web <?xml version=“1.0” ?><curs desc=“…” />
ce va fi web‐ul semantic
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
Dr. Sabin Buraga http://www.purl.org/net/busaco
Semantic Web <?xml version=“1.0” ?><curs desc=“…” />
“Concluzii”
Radar Networks & Nova Spivack, 2007 –www.radarnetworks.com
Dr. Sabin Buraga http://www.purl.org/net/busaco
Semantic Web <?xml version=“1.0” ?><curs desc=“…” />
Rezumat
Webul semantic: prezent & viitor
Dr. Sabin Buraga http://www.purl.org/net/busaco
Semantic Web <?xml version=“1.0” ?><curs desc=“…” />
Multsucces!