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

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

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)

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 ? !

Example: Social Networks
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
Applications
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
Applications
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

The Chicken and Egg Problem Killer Applications Semantic Data

Agenda
Applications
What we do + Demo

What we have done
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

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?

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

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

by Eran Toch

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