CMPE 588 ENGINEERING THE SEMANTIC WEB INFORMATION SYSTEM

1
CMPE 588 ENGINEERING THE SEMANTIC WEB INFORMATION
SYSTEM
EASTERN MEDITERRANEAN UNIVERSITY COMPUTER
ENGINEERING DEPARTMENT

• ONTOLOGY-DRIVEN SEMANTIC MARK UP OF UNSTRUCTURED
  TEXTS

Instructor Assoc. Prof. Dr. Atilla ELCI
Faaya H. Tiwuya
2
OUTLINE

• Introduction
• Defination of terms
• Need to use ontologies
• Annotation tools
• Project Tools
• Ontology driven semantic mark up/annotation
  process
• Sample Semantic Mark up
• Querying knowledge base

3
OUTLINE

• Conclusion
• References
• Questions

4
INTRODUCTION

• A recent estimates by Merrill Lynch states that
  more than 85 of all business information exists
  as unstructured data
• In order to realise the goal of the Semantic Web
  which is to allow machines share and exploit
  knowledge without central authority, there is a
  need to mark up this bulk of data in a way that
  machines will be able to read them

5
INTRODUCTION

• Blogs are a typical example of information that
  exists in an unstructured format.
• There is a need therefore to mark-up blog sites
  within the context of an ontology so that that
  meaningful information can be extracted from them
  for the population of a knowledge base for
  retrieval at a later time by different
  applications.

6
DEFINATION OF TERMS

• What then is a blog, ontology and semantic
  annotation?
• Blogs A blog is a website where entries are
  written in a chronological order and displayed in
  reverse chronological order. Blogs provide
  commentary or news on a particular subject such
  as food, politics, or local news.

7
DEFINATION OF TERMS

• Ontology An ontology is a data model that
  represents a set of concepts within a domain and
  the relationships between those concepts.
• It is used to reason about the objects within
  that domain.
• Annotation Annotation is the process of marking
  up or adding notes/comments to something. Within
  the context of the semantic web, it is the
  process of marking up documents with meaningful
  tags

8
NEED TO USE ONTOLOGIES

• Why do we need to use ontologies?
• To share common understanding of the structure of
  information among people or software agents
• To enable reuse of domain knowledge
• To make domain assumptions explicit
• To separate domain knowledge from the
  operational knowledge
• To analyze domain knowledge

9
ANNOTATION TOOLS

• SHOE Knowledge Annotator
• Annotea
• SMORE
• Semantic Word
• KIM Semantic Annotation Platform
• MnM
• MnM is an annotation tool which provides both
  automated and semi-automated support for
  annotating web pages with semantic contents. MnM
  integrates a web browser with an ontology editor
  and provides open APIs to link to ontology
  servers and for integrating information
  extraction tools.

10
PROJECT TOOLS

• MnM
• TinyXml
• C BUILDER 5.0

11
ONTOLOGY DRIVEN SEMANTIC ANNOTATION PROCESS
12
A CELEBRITY IS A PERSON

• A celebrity is a person who is famous ( not for
  something infamous ) and attracts a lot of media
  attention. E.g David Beckham, Angelina Jolie,
  Zinedane Zidane.
• Sites exists where people post comments about
  these sort of people almost o a daily basis.
• Some of these sites contain important
  information.

13
A CELEBRITY IS A PERSON
14
SAMPLE ONTOLOGY DRIVEN SEMANTIC MARKUP ON A
DAVID BECKHAM BLOGUSING MnM
15
XML FILE ON BECKHAM MARK-UP
16
SAMPLE QUERY FOR INFO ON BECKHAM USING CELEBQRY
17
SAMPLE QUERY FOR INFO ON BECKHAM USING CELEBQRY
18
CONCLUSION

• Blogs contain a lot of valuable information about
  different topics
• An otology driven semantic annotation of these
  blogs will create a unified means to share the
  wealth of information these blogs possess.

19
REFERENCES

• Prof. Dr. Atilla Aelci, Lecture slides CMPE 588
  Engineering Semantic Web information Systems.
• Ontology Development 101 A Guide to Creating
  Your First Ontology Natalya F. Noy and Deborah L.
  McGuinness Stanford University, Stanford, CA,
  94305 noy_at_smi.stanford.edu and
  dlm_at_ksl.stanford.edu
• http//en.wikipedia.org/wiki/Unstructured_data
• http//semanticweb2001.aifb.uni-karlsruhe.de/
• http//en.wikipedia.org/wiki/Blog
• http//en.wikipedia.org/wiki/Ontology_(computer_sc
  ience)
• http//annotation.semanticweb.org/tools/
• M.Vargas-Vera, E. Motta , J. Domingue M. Lanzoni
  , A. Stutt, F. Ciravegna, MnM Ontology-Driven
  Tool for Semantic Markup
• TinyXml, http//www.grinninglizard.com/tinyxmldoc
  s/index.html

20

• THANK YOU FOR YOUR ATTENTION
• QUESTIONS