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The Semantic Web: A White Elephant or a New Hope for The Web?

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Information about The Semantic Web: A White Elephant or a New Hope for The Web?

Published on April 28, 2008

Author: erant

Source: slideshare.net

Description

An introduction to the Semantic Web, its problems and its promises. Given at the Technion - Israel Institute of Technology.
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The Semantic Web A White Elephant or a New Hope? Eran Toch Faculty of Industrial Engineering and Management The Technion – Israel Institute of Technology Advisors: Dov Dori and Iris Reinhartz-Berger

Agenda What is the Semantic Web? Applications The Problem with the Semantic Web What we do + Demo

What is the Semantic Web?

Applications

The Problem with the Semantic Web

What we do + Demo

So, what is wrong with the current Web?

 

Today, a Web of Documents

The Current Web <html> <head> <title>The Technion</title> </head> <body> Welcome to the Technion. </body> </html> HTML Document URL: http://www.technion.ac.il

Vision: A Web of Data The Current Web HTML + URL The Semantic Web By Tim Berners-Lee et al., Scientific American (2001)

Vision: A Web of Data

Humans Machines Semantic Resource

How do we inject meaning?

A common agreement between parties

Ontology From the Greek onto : being and - logy : theory A common conceptualization of a domain Concept Resource Writes Reads Knows Knows ? !

From the Greek onto : being and - logy : theory

A common conceptualization of a domain

Example: Social Networks Personal details (name, mail, location) Organizations, networks People you know (friends) ...

Personal details (name, mail, location)

Organizations, networks

People you know (friends)

...

FOAF Ontology Structure Image Person Agent URL Organization Email has has knows is a is a Address lives Employee Ontology Worker Company is a is a Technion Network has Eran instance of instance of member

OWL: Web Ontology Language FOAF Ontology Employee Ontology FOAF Competitor Eran

Agenda What is the Semantic Web? Applications The Problem with the Semantic Web What we do + Demo

What is the Semantic Web?

Applications

The Problem with the Semantic Web

What we do + Demo

Example 1: Semantic Search

 

Example 2: GoPubMed

 

Example 3: Friend of a Friend

FOAF Entity

 

 

Example 4: Semantic Web Service Composition

FOAF Ontology Image Person Agent URL Organization Email has has knows is a is a Address lives has member Get Address input output Get Members input output

Web Services Pool I want an application that maps my friend’s homes Agent User Find Friends Get Address Map Addresses

Agenda What is the Semantic Web? Applications The Problem with the Semantic Web What we do + Demo

What is the Semantic Web?

Applications

The Problem with the Semantic Web

What we do + Demo

Lots of Academic Work ISWC International Semantic Web Conference WWW International World Wide Web Conference ER International Conference on Conceptual Modeling SWUI Semantic Web User Interfaces ICWE International Conference on Web Engineering And 30+ conferences and Workshops But with little impact on the real world

ISWC

International Semantic Web Conference

WWW

International World Wide Web Conference

ER

International Conference on Conceptual Modeling

SWUI

Semantic Web User Interfaces

ICWE

International Conference on Web Engineering

And 30+ conferences and Workshops

The Chicken and Egg Problem Killer Applications Semantic Data

Agenda What is the Semantic Web? Applications The Problem with the Semantic Web What we do + Demo

What is the Semantic Web?

Applications

The Problem with the Semantic Web

What we do + Demo

What we have done Approximate service composition Flexibility / Precision Ranking Performance Human perception Tools OPOSSUM Liquid-Interface Service-Crawler

Approximate service composition

Flexibility / Precision

Ranking

Performance

Human perception

Tools

OPOSSUM

Liquid-Interface

Service-Crawler

Our Approach Ontologies Weak-semantics Content

Approximate Service Retrieval Web Services Pool Find Friends p 2 Get Address p 1 Map Address p 3 ? ?

Approximate Query Evaluation Address Map Address input Query Map a given address Longitude / Latitude Map output Airport Business Performance

Recall-Precision Curve

Demo

Summary The Semantic Web Ontologies Approximate reasoning Lots of questions What bothers you on the Semantic Web? Can it work? If it would work, would it be harmful?

The Semantic Web

Ontologies

Approximate reasoning

Lots of questions

What bothers you on the Semantic Web?

Can it work?

If it would work, would it be harmful?

http://www.technion.ac.il/erant Thank You 

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