Retrospective si perspective referitoare la Web-ul semantic.

1. <?xml version=“1.0” ?>
Semantic Web <curs desc=“…” />
Web semantic
Dr. Sabin­Corneliu Buraga
Facultatea de Informatica
Universitatea “A.I.Cuza” – Iasi, Romania
http://www.infoiasi.ro/~busaco/
Dr. Sabin Buraga http://www.purl.org/net/busaco

2. <?xml version=“1.0” ?>
Semantic Web <curs desc=“…” />
Web­ul semantic
retrospective & perspective
Dr. Sabin Buraga http://www.purl.org/net/busaco

3. <?xml version=“1.0” ?>
Semantic Web <curs desc=“…” />
“Analfabetul viitorului nu va mai fi
cel care nu stie sa citeasca;
va fi cel care nu stie sa inteleaga.”
Alvin Toffler
Dr. Sabin Buraga http://www.purl.org/net/busaco

4. <?xml version=“1.0” ?>
Semantic Web <curs desc=“…” />
ce este web‐ul semantic
Conform Tim Berners‐Lee (2006):
data interoperability across applications and
organizations (for IT)
a set of interoperable standards
for knowledge exchange
an architecture for interconnected communities
and vocabularies
Dr. Sabin Buraga http://www.purl.org/net/busaco

5. <?xml version=“1.0” ?>
Semantic Web <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 bazeze
pe probabilitate sau noroc
Dr. Sabin Buraga http://www.purl.org/net/busaco

6. <?xml version=“1.0” ?>
Semantic Web <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 realizeze
intr‐o maniera descentralizata & standardizata
Dr. Sabin Buraga http://www.purl.org/net/busaco

7. <?xml version=“1.0” ?>
Semantic Web <curs desc=“…” />
meta‐date si relatii descrise semantic
in cadrul si intre documentele Web
Dr. Sabin Buraga http://www.purl.org/net/busaco

8. <?xml version=“1.0” ?>
Semantic Web <curs desc=“…” />
Web‐ul semantic ofera un punct de vedere abstract
“ascunde” documentele
Dr. Sabin Buraga http://www.purl.org/net/busaco

9. <?xml version=“1.0” ?>
Semantic Web <curs desc=“…” />
relatia atomica
(modelul RDF)
SW ofera premisele modelarii conceptuale a resurselor
Dr. Sabin Buraga http://www.purl.org/net/busaco

10. <?xml version=“1.0” ?>
Semantic Web <curs desc=“…” />
Crearea de “punti” intre aplicatii via servere virtuale
procesind triple RDF (Tim Berners‐Lee, 2007)
www.w3.org/2007/Talks/1211­whit­tbl/
Dr. Sabin Buraga http://www.purl.org/net/busaco

11. <?xml version=“1.0” ?>
Semantic Web <curs desc=“…” />
ce este web‐ul semantic
Mit:
the semantic Web technology is Description Logic
OWL este doar un limbaj al Web‐ului semantic
aplicatiile care doresc sa exprime diverse expresivitati
il pot utiliza
trebuie insa asigurata interoperabilitatea
folosirea si altor limbaje via URI
nu trebuie reinventata functionalitatea
deja oferita de standardele actuale
Dr. Sabin Buraga http://www.purl.org/net/busaco

12. <?xml version=“1.0” ?>
Semantic Web <curs desc=“…” />
ce este web‐ul semantic
Mit: SW is about public data
tehnologiile 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

13. <?xml version=“1.0” ?>
Semantic Web <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

14. <?xml version=“1.0” ?>
Semantic Web <curs desc=“…” />
ce este web‐ul semantic
Alte mituri (Berners‐Lee, 2006):
the semantic Web is about hand­annotated
Web pages
such pages are interesting,
but not the mainstay of semantic Web: too much trouble!
Dr. Sabin Buraga http://www.purl.org/net/busaco

15. <?xml version=“1.0” ?>
Semantic Web <curs desc=“…” />
ce este web‐ul semantic
Alte mituri (Berners‐Lee, 2006):
the semantic Web is mainly about content
extracted from text
no, it is primarily an interlingua
for relational data and logic
bridges will always be important
Dr. Sabin Buraga http://www.purl.org/net/busaco

16. <?xml version=“1.0” ?>
Semantic Web <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 mess
of interconnected ontologies
Dr. Sabin Buraga http://www.purl.org/net/busaco

17. <?xml version=“1.0” ?>
Semantic Web <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

18. <?xml version=“1.0” ?>
Semantic Web <curs desc=“…” />
ce este web‐ul semantic
Web: You know, He is always talking about
the 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

19. <?xml version=“1.0” ?>
Semantic Web <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 bazeaza Web‐ul semantic
ofera 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

20. <?xml version=“1.0” ?>
Semantic Web <curs desc=“…” />
ce va fi web‐ul semantic
Oamenii codifica & partajeaza cunostintele
via limbaj(e):
natural: documente, speech, naratiuni
vizual: 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

21. <?xml version=“1.0” ?>
Semantic Web <curs desc=“…” />
ce va fi web‐ul semantic
Dr. Sabin Buraga http://www.purl.org/net/busaco

22. <?xml version=“1.0” ?>
Semantic Web <curs desc=“…” />
ce va fi web‐ul semantic
Semantici:
Integrare
Implicite, formale, powerful
Aspecte‐cheie ale Web‐ului semantic:
Inter‐
Meaning, infrastructura sigura,
ontologii, knowledge flow, colaborare operabilitate
Arii de aplicabilitate & contexte:
Societatea bazata pe cunoastere Proiectare &
E­business, e­government, e­learning
implementare
Stiinte ale vietii, sanatate (e­health)
Biblioteci digitale
Strategii
Semantic social media
…
Dr. Sabin Buraga http://www.purl.org/net/busaco

23. <?xml version=“1.0” ?>
Semantic Web <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 representation
semantic social computing: semantic e­mail, semantic
blog, semantic desktop & webtop, semantic IM
semantic collaboration: semantic wikis, semantic agents,
collective knowledge systems, semantic CMS
Dr. Sabin Buraga http://www.purl.org/net/busaco

24. <?xml version=“1.0” ?>
Semantic Web <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 & programming
knowledge­based applications: semantic mashups,
knowledge centered engineering, “in silico” science
semantic architectures: semantic enterprise architecture,
semantic SOA, semantic interoperability
semantic enterprise processes
Dr. Sabin Buraga http://www.purl.org/net/busaco

25. <?xml version=“1.0” ?>
Semantic Web <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 engineering
intelligent systems: robots, blogjects, machine learning
automated reasoning: multiple types of inferencing,
logics for uncertainty, conflicts & values
semantic ecosystem(s): semantic cloud computing,
knowledge commerce, autonomic intellectual property
Dr. Sabin Buraga http://www.purl.org/net/busaco

26. <?xml version=“1.0” ?>
Semantic Web <curs desc=“…” />
“Concluzii”
Radar Networks & Nova Spivack, 2007 – www.radarnetworks.com
Dr. Sabin Buraga http://www.purl.org/net/busaco

27. <?xml version=“1.0” ?>
Semantic Web <curs desc=“…” />
Rezumat
Web­ul semantic: prezent & viitor
Dr. Sabin Buraga http://www.purl.org/net/busaco

28. <?xml version=“1.0” ?>
Semantic Web <curs desc=“…” />
Mult
succes!
Dr. Sabin Buraga http://www.purl.org/net/busaco