The Web of data with meaning ...

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22 Οκτ 2013 (πριν από 3 χρόνια και 11 μήνες)

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The Web of data with meaning ...

By Michael Griffiths.


Right now, the World Wide Web contains virtually an endless amount of
information in the form of documents. We use computers to search for
these documents, but they still have to be read and interpreted by humans
before any useful information can be taken and utilized. Computers
present you with information but don’t understand exactly what
information is fittingly relevant to display given the circumstance of most
requests. The Semantic Web is going to change this by having data as well
as documents on the Web so that machines can process, utilize, assemble,
and even act on the data in the most efficient ways. Basically it means to
give data meaning for machines to understand what they are displaying on
the web.




The Semantic Web is built on syntaxes which use :



Applying URIs in triple based structures to represent data. (Uniform
Resource Identifier) are simply a Web identifier
eg
. http, www..


RDF (Resource Description Framework).
A language which utilises
three URI based structures and will be
held in databases, or
interchanged on the

World Wide Web.


OWL (
Web Ontology Language) is a family of knowledge
representation languages for authoring
ontologies
.



XML (
Extensible
Markup

Language) a set of rules for encoding
documents electronically.




Evolve the current web so that data has
meaning to machines.



Allow users and computers to use, find, share,
publish and create information more
efficiently.


A solution to the limitations of HTML.

CURRENT WEB

SEMANTIC WEB

<item>cat</item>
-

A non semantic web tag.


<item
rdf:about
="http://dbpedia.org/resource/Cat">Cat</item>
-

An example of a semantic web tag with same information.


Everything has a URI.

Another example: <http://example.com/2002/std6#col>






Source: Wikipedia


Semantic web is still a project and only
experimental applications have been
made for example FOAF
-
project. FOAF is
a website based on Semantic Web
syntaxes.

ADVANTAGES

DISADVANTAGES


More exciting world of web,
richer user experience.


More process able
information is available


People could Work, learn
and exchange knowledge
effectively


May be Inconsistent.


Users could take advantage
of the system and
manipulate URIs.


Time consuming to create
and publish content.

By Michael Griffiths.

In conclusion Semantic Web will give knowledge to computers so
that
they will
know
what they are
displaying on web pages.