3. What is Ontology?
• The term "ontology" can be defined as
an explicit specification of conceptualization.
1. Ontology is a term in philosophy and its meaning is ``theory
of existence''.
2. Ontology is a body of knowledge describing some domain.
4. Ontology-Definition
Ontologies to capture human knowledge based on common sense.
- Lenat y Guha (1990)
Source: http://www.emiliosanfilippo.it/wp-content/uploads/2011/11/Ontology-3.jpg
5. How are Ontologies currently being used to Librarians?
• Standardize vocabulary.
• Provide better routes.
• Provide better search.
Source: http://gonereading.com/newshop/wpcontent/uploads/2012/01/Librarian-Gift-446x446.png
7. Tools for Building ontology
• The are many Ontology tools are available in the
present times such as Protégé, OntoEdit, Ontolingua,
OilEd, pOWL etc.
Source: http://www.colourbox.com/preview/2456889-245207-three-3d-people-with-the-tools-in-the-hands-of.jpg
8. Protégé
• Free, open source
• Web client and format
• Strong community
Source: http://www.racer-systems.com/img//logo/protege.gif
9. Ontology built using Protégé
Source: http://protege-ontology-editor-knowledge-acquisition-system.136.n4.nabble.com/attachment/4658809/2/jbddhbbc.png
10. What is Ontology Libraries (OL)?
Ontology libraries are the systems that collect ontologies from
different sources and facilitate the tasks of finding, exploring, and
using these ontologies.
Source: http://semanticweb.com/files/2013/09/9685321345_afc5296f95.jpg
11. Need for ontology libraries
• Enables and facilitates interoperability
• Well-established and well-tested ontologies
• Integrates the data much more easily
(Contd.)
12. Need for ontology libraries
• Find and determine the domain
• Ontology in specific format
• Publish their ontology
15. Library content
What is in it?
-Ontology and how they are collected
-Gatekeeping
-Mappings and other inter-ontology relations
-Metadata
16. Main function for users
What does it let you do?
-Finding, Search and evaluating ontologies
-Browsing
-Programmatic access
17. Other features
What else is there?
-Versioning
-Reasoning
-User management
-Notifications
18. What OL offers!!
Ontology library systems offer functions for
managing, adapting and standardizing groups of
ontologies, for indexing content with ontologies, and
for utilizing ontologies in applications.
Source: http://assets.fiercemarkets.com/public/newsletter/fiercehealthit/telehealth4.jpg
19. Structure of Ontology Library Systems
Source: http://origin-ars.els-cdn.com/content/image/1-s2.0-S0169023X02000411-gr4.jpg
29. oeGov- e-Government
•
•
•
•
•
Distributed creation and maintenance of information
RDF/OWL formats
Semantics and controlled vocabularies
Schemas and several datasets
Blog system and review
Source: http://oegov.org/images/oegov_logo.jpg
38. Transitions to the future
Challenges and opportunities for an ontology
developer
-Role of an ontology libraries in massive adoption
and reuse.
-Community service as provided by ontology libraies
through appropriate endorsements.
(contd.)
39. Transitions to the future
Challenges and opportunities for an ontology
user
- Important for ontologies to be validated by a given
community
- An Ontologies be considered to one particular
domain, one particular format
40. References
1. Mathieu, d’Aquin, F. Noy, Natalya (2012). Where to publish and find
ontologies? A survey of ontology libraries. Web Semantics:
Science, Services and Agents on the World Wide Web, 11, 96–111
2. http://obitko.com/tutorials/ontologies-semantic-web/ontologies.html
3. Curras, E (2010), Ontologies, Taxonomies and Thesauri in system science
and systematics. Great Abinton, CB: Woodhead Publishing.
4. King, Brandy . E , Reinold, Kathy (2008). Finding the concept, not just
the word: a librarian’s guide to ontologies and semantics. Witney, OX:
Chandos Publishing.
5. Bechhofer, S. Goble, C and Horrocks, I (2002). Requirements of
Ontology Languages. IST Project IST-2000-29243 OntoWeb.
6. http://www.dur.ac.uk/p.h.shaw/teaching/ais/lectures/patricia/ais13-rdfs.pdf
41. References (Contd.)
7. Heflin, J , an introduction to the owl web ontology language
8. http://protege.stanford.edu/
9. http://en.wikipedia.org/wiki/Ontology_Libraries_(computer_science)
10.http://protege.stanford.edu/publications/ontology_development/ontolog
y101-noy-mcguinness.html
11. Y. Ding, D. Fensel, Ontology library systems. The key to successful
ontology reuse, in: First Semantic Web Working Symposium, Stanford
University, 2001, pp. 93–112.
12. http://rpc295.cs.man.ac.uk:8080/repository/
13. http://semanticweb.com/oegov-open-government-through-semanticweb-technologies_b13990
14. http://oegov.org/
