See also:

• Reference: Knowledge Management: Knowledge Retrieval: Classification  (35)
• Society: Philosophy: Metaphysics: Ontology  (16)
• Society: Philosophy: Philosophy of Logic: Logic and Ontology  (8)

This category in other languages:
	French  (8)

Buffalo Ontology Site - Comprehensive collection of links maintained by Barry Smith, on the philosophy faculty at State University of New York at Buffalo..

CO-ODE - Collaborative Open Ontology Development Environment is a project led by the Medical Informatics Group at the University of Manchester..

European Centre for Ontological Research (ECOR) - ECOR represents a new approach in applying ontology to a variety of problems in information science and related areas, by coordinating institutions, organisations and companies working in the field..

Guided Tour of Ontology - Very large site comprising six papers by mathematician John F. Sowa of Harvard and MIT, each with summary introductory paragraph followed by numbered topic headings hyperlinked to detailed articles. Exhaustive summary bibliography..

KBS/Ontology Projects and Groups - Hundreds of annotated, alphabetically sorted links to ongoing work by members of the Knowledge Systems Research Group, part of the Artificial Intelligence Lab at the University of Texas at Austin..

LSDIS Projects - Large Scale Distributed Information Systems lab at the University of Georgia lists ongoing projects such as Sensor Map, BioInformatics for Glycan Expression, and a number of semantic discovery projects..

On-To-Knowledge - Three-year European collaboration discussing knowledge management methods based on ontology sharing and reuse, with successive papers and a book on the semantic web published in 2002..

Ontolog - Ontolog is an open, international, virtual community devoted to advancing the field of ontological engineering and semantic technologies, and advocating their adoption into mainstream applications and international standards..

Ontologies Come of Age - Paper by Deborah L. McGuinness discussing ontologies and requirements for their effective use on the web. [2002].

Ontologies For Education - A topic-map driven portal focused on application of ontologies and similar technologies to educational domains..

Ontology Engineering: a survey and a return on experience - Research report by INRIA, presenting the state of the art of engineering techniques and a project description. (downloadable PDF).

Ontology Engineering Background - Overview of methodologies, papers and people..

Ontology Online - Semantic web experiment and ontology mashup maintained by David Decraene..

Ontoweb - The community site for Ontoweb, a European Union founded project about Ontology-based information exchange for knowledge management and electronic commerce..

OWL Web Ontology Language Reference - Detailed description of the OWL W3C specification..

Principles of ontology - Mailing list archive. Some basic definitions by John Sowa..

What is an Ontology? - Short and long answers from Tom Gruber of Knowledge Systems Lab at Stanford University..

You're It - A weblog about social tagging..

Ontology is Overrated: Categories, Links, and Tags - Clay Shirky explores online categorization, contrasting ontologies with folksonomies. (May 26, 2005).

Adaptive Path - Metadata for the Masses - Discussion of the promise and problems of classification systems created by nonprofessionals. (October 19, 2004).