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The Semantic Web A White Elephant or a New Hope? Eran Toch Faculty of Industrial Engineering and Management The Technion –...
Agenda <ul><li>What is the Semantic Web? </li></ul><ul><li>Applications </li></ul><ul><li>The Problem with the Semantic We...
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 Doc...
<ul><li>Vision: A Web of Data  </li></ul>The Current Web HTML + URL The Semantic Web By Tim Berners-Lee et al., Scientific...
Humans Machines Semantic Resource
How do we inject meaning?
A common agreement between parties
Ontology <ul><li>From the Greek  onto : being and - logy : theory </li></ul><ul><li>A common conceptualization of a domain...
Example: Social Networks <ul><li>Personal details (name, mail, location) </li></ul><ul><li>Organizations, networks </li></...
FOAF Ontology Structure Image Person Agent URL Organization Email has has knows is a is a Address lives Employee Ontology ...
OWL: Web Ontology Language FOAF Ontology Employee Ontology FOAF Competitor  Eran
Agenda <ul><li>What is the Semantic Web? </li></ul><ul><li>Applications </li></ul><ul><li>The Problem with the Semantic We...
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...
Web Services Pool I want an application that maps my friend’s homes Agent User Find Friends Get Address Map Addresses
Agenda <ul><li>What is the Semantic Web? </li></ul><ul><li>Applications </li></ul><ul><li>The Problem with the Semantic We...
Lots of Academic Work <ul><li>ISWC </li></ul><ul><ul><li>International Semantic Web Conference </li></ul></ul><ul><li>WWW ...
The Chicken and Egg Problem Killer Applications Semantic Data
Agenda <ul><li>What is the Semantic Web? </li></ul><ul><li>Applications </li></ul><ul><li>The Problem with the Semantic We...
What we have done <ul><li>Approximate service composition </li></ul><ul><ul><li>Flexibility / Precision </li></ul></ul><ul...
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 ...
Recall-Precision Curve
Demo
Summary <ul><li>The Semantic Web </li></ul><ul><li>Ontologies </li></ul><ul><li>Approximate reasoning </li></ul><ul><li>Lo...
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?

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An introduction to the Semantic Web, its problems and its promises. Given at the Technion - Israel Institute of Technology.

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  • Hi, my name is Eran Toch. I am from the Technion – Israel Inst. of Technology. The subject which I will talk about today, Approximating Service Compositions, consists of the main body of my PhD research, which I will about to finish.
  • Transcript of "The Semantic Web: A White Elephant or a New Hope for The Web?"

    1. 1. 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
    2. 2. Agenda <ul><li>What is the Semantic Web? </li></ul><ul><li>Applications </li></ul><ul><li>The Problem with the Semantic Web </li></ul><ul><li>What we do + Demo </li></ul>
    3. 3. So, what is wrong with the current Web?
    4. 5. Today, a Web of Documents
    5. 6. 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
    6. 7. <ul><li>Vision: A Web of Data </li></ul>The Current Web HTML + URL The Semantic Web By Tim Berners-Lee et al., Scientific American (2001)
    7. 8. Humans Machines Semantic Resource
    8. 9. How do we inject meaning?
    9. 10. A common agreement between parties
    10. 11. Ontology <ul><li>From the Greek onto : being and - logy : theory </li></ul><ul><li>A common conceptualization of a domain </li></ul>Concept Resource Writes Reads Knows Knows ? !
    11. 12. Example: Social Networks <ul><li>Personal details (name, mail, location) </li></ul><ul><li>Organizations, networks </li></ul><ul><li>People you know (friends) </li></ul><ul><li>... </li></ul>
    12. 13. 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
    13. 14. OWL: Web Ontology Language FOAF Ontology Employee Ontology FOAF Competitor Eran
    14. 15. Agenda <ul><li>What is the Semantic Web? </li></ul><ul><li>Applications </li></ul><ul><li>The Problem with the Semantic Web </li></ul><ul><li>What we do + Demo </li></ul>
    15. 16. Example 1: Semantic Search
    16. 18. Example 2: GoPubMed
    17. 20. Example 3: Friend of a Friend
    18. 21. FOAF Entity
    19. 24. Example 4: Semantic Web Service Composition
    20. 25. 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
    21. 26. Web Services Pool I want an application that maps my friend’s homes Agent User Find Friends Get Address Map Addresses
    22. 27. Agenda <ul><li>What is the Semantic Web? </li></ul><ul><li>Applications </li></ul><ul><li>The Problem with the Semantic Web </li></ul><ul><li>What we do + Demo </li></ul>
    23. 28. Lots of Academic Work <ul><li>ISWC </li></ul><ul><ul><li>International Semantic Web Conference </li></ul></ul><ul><li>WWW </li></ul><ul><ul><li>International World Wide Web Conference </li></ul></ul><ul><li>ER </li></ul><ul><ul><li>International Conference on Conceptual Modeling </li></ul></ul><ul><li>SWUI </li></ul><ul><ul><li>Semantic Web User Interfaces </li></ul></ul><ul><li>ICWE </li></ul><ul><ul><li>International Conference on Web Engineering </li></ul></ul><ul><li>And 30+ conferences and Workshops </li></ul>But with little impact on the real world
    24. 29. The Chicken and Egg Problem Killer Applications Semantic Data
    25. 30. Agenda <ul><li>What is the Semantic Web? </li></ul><ul><li>Applications </li></ul><ul><li>The Problem with the Semantic Web </li></ul><ul><li>What we do + Demo </li></ul>
    26. 31. What we have done <ul><li>Approximate service composition </li></ul><ul><ul><li>Flexibility / Precision </li></ul></ul><ul><ul><li>Ranking </li></ul></ul><ul><ul><li>Performance </li></ul></ul><ul><ul><li>Human perception </li></ul></ul><ul><li>Tools </li></ul><ul><ul><li>OPOSSUM </li></ul></ul><ul><ul><li>Liquid-Interface </li></ul></ul><ul><ul><li>Service-Crawler </li></ul></ul>
    27. 32. Our Approach Ontologies Weak-semantics Content
    28. 33. Approximate Service Retrieval Web Services Pool Find Friends p 2 Get Address p 1 Map Address p 3 ? ?
    29. 34. Approximate Query Evaluation Address Map Address input Query Map a given address Longitude / Latitude Map output Airport Business Performance
    30. 35. Recall-Precision Curve
    31. 36. Demo
    32. 37. Summary <ul><li>The Semantic Web </li></ul><ul><li>Ontologies </li></ul><ul><li>Approximate reasoning </li></ul><ul><li>Lots of questions </li></ul><ul><ul><li>What bothers you on the Semantic Web? </li></ul></ul><ul><ul><li>Can it work? </li></ul></ul><ul><ul><li>If it would work, would it be harmful? </li></ul></ul>
    33. 38. http://www.technion.ac.il/erant Thank You 
    34. 39. Back
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