The Semantic Web

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Semantic web

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The Semantic Web:

The Semantic Web Sumbitted to: Submitted to: Presented By: Mr.Brijesh Naik Mr. Ankith Garg Computer Engineering Computer Engineering Dept. Final year J.E.C.R.C. J.E.C.R.C. www.powerpointpresentationon.blogspot.com

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The semantic web Mostly flat information Some databases but content very functional Little engagement or interactivity

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The semantic web Web 1.0 design elements Some typical design elements of a Web 1.0 site include: 1.Static pages instead of dynamic user-generated content. 2.The use of framesets. 3.HTML forms sent via email. A user would fill in a form, and upon clicking submit their email client would attempt to send an email containing the form's details.

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The semantic web Greater interactivity Growth of social media / social networking Online communities created / social capital

The semantic web:

The semantic web

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The semantic web Joining up of information Data portability Browsers and search engines become more ‘intelligent’

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The semantic web Works but is clunky, not that efficient, technically limited

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The semantic web Smoother experience, looks better, still lacks cohesion

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The semantic web Greater scope for exploration, limitless potential, smart

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The semantic web

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The semantic web Having seen the comparision , we can proceed over the application part. Let’s get into semantics. Firstly, we’ll look at the traditional web model…

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The semantic web Let’s introduce Professor Sharma. With the traditional web model she has the following…

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The semantic web A faculty page

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The semantic web A faculty page A research page

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The semantic web A faculty page A research page A blog

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The semantic web A faculty page A research page A blog and a staff listing page

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The semantic web The content of these sites is fine but there are no linkages between the data. So visitors find it difficult to get all the information they need quickly and easily.

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The semantic web That’s where the Semantic web comes in…

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The semantic web Using code we can create relationships between websites, people and events… These can then be understood by the browser and interpreted in a helpful way.

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The semantic web So we can link Professor Sharma’s faculty page to her research.

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The semantic web So we can link Professor Sharma’s faculty page to her research. Then link data in her blog to both of these.

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The semantic web So we can link Professor Sharma’s faculty page to her research. Then link data in her blog to both of these. And link profile data to her staff listing.

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The semantic web And her staff listing could show some of the other academics she works with.

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The semantic web And her staff listing could show some of the other academics she works with. With her research page showing her links with worldwide research collaborators.

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The semantic web Who also know one of her colleagues.

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The semantic web Who also know one of her colleagues. Who comment on Professor Sharma’s blog regularly.

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The semantic web With all this data being able to be displayed simply it provides a much richer user experience and offers information that previously might not have been exposed.

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The semantic web How To Create WEB 3.0 Pages

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The semantic web Firstly we could create Our documents using RDF: Resource Description Framework

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The semantic web Here special meta-data code is added to pages that describe the relationships between that data. These are called triples.

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The semantic web RDF is very powerful but up to now hasn’t been widely deployed as it can be a very complex process to create the relationships and browser support has been limited.

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The semantic web Having said this, better tools now exist to create RDF documents which are being used in the web development.

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The semantic web An easier way of getting involved is to use Microformats. These are simple pieces of code that allow the browser to interpret the data intelligently.

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The semantic web Now let’s take a look at the HR contacts page. Again we’ve used the address microformat. This allows visitors to get a Google map of the location with a single click.

The Semantic Web:

The Semantic Web Some of the challenges for the Semantic Web are: Vastness: The World Wide Web contains at least 48 billion pages (as of August 2, 2009). The SNOMED CT medical terminology ontology contains 370,000 class names, and existing technology has not yet been able to eliminate all semantically duplicated terms. Any automated reasoning system will have to deal with truly huge inputs. Vagueness: These are imprecise concepts like "young" or "tall". This arises from the vagueness of user queries, of concepts represented by content providers, of matching query terms to provider terms and of trying to combine different knowledge bases with overlapping but subtly different concepts. Fuzzy logic is the most common technique for dealing with vagueness.

The Semantic Web:

The Semantic Web Some of the challenges for the Semantic Web are: Uncertainty: These are precise concepts with uncertain values. For example, a patient might present a set of symptoms which correspond to a number of different distinct diagnoses each with a different probability. Probabilistic reasoning techniques are generally employed to address uncertainty. Inconsistency: These are logical contradictions which will inevitably arise during the development of large ontologies .Deductive reasoning fails catastrophically when faced with inconsistency, because "anything follows from a contradiction“.

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The semantic web Acknowledgements: University Of Leeds W3C(The world wide web consortium) , the main international standards organisation for the world wide web. thesemanticway.files.wordpress.com Google.com Wikipedia.com

The Semantic Web:

The Semantic Web Thank You!

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