Web Directory

» Adaptive Path - Metadata for the Masses
   Discussion of the promise and problems of classification systems created by nonprofessionals.
   http://www.adaptivepath.com/publications/essays/archives/000361.php

» Buffalo Ontology Site
   Comprehensive collection of links maintained by Barry Smith, on the philosophy faculty at State University of New York at Buffalo.
   http://ontology.buffalo.edu/

» CO-ODE
   Collaborative Open Ontology Development Environment is a project led by the Medical Informatics Group at the University of Manchester.
   http://www.co-ode.org/

» 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.
   http://www.ecor.uni-saarland.de/

» 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.
   http://www.jfsowa.com/ontology/guided.htm

» 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.
   http://www.cs.utexas.edu/users/mfkb/related.html

» 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.
   http://lsdis.cs.uga.edu/projects/

» OWL Web Ontology Language Reference
   Detailed description of the OWL W3C specification.
   http://www.w3.org/TR/owl-ref/

» 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.
   http://ontolog.cim3.net/

» Ontologies Come of Age
   Paper by Deborah L. McGuinness discussing ontologies and requirements for their effective use on the web. [2002]
   http://www.ksl.stanford.edu/people/dlm/papers/ontologies-come-of-age-mit-press-%28with-citation%29.htm

» Ontologies For Education
   A topic-map driven portal focused on application of ontologies and similar technologies to educational domains.
   http://o4e.iiscs.wssu.edu/xwiki/bin/view/Blog/About

» 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)
   http://www.inria.fr/rrrt/rr-4396.html

» Ontology Online
   Semantic web experiment and ontology mashup maintained by David Decraene.
   http://ontologyonline.org

» Ontology is Overrated: Categories, Links, and Tags
   Clay Shirky explores online categorization, contrasting ontologies with folksonomies.
   http://shirky.com/writings/ontology_overrated.html

» Principles of ontology
   Mailing list archive. Some basic definitions by John Sowa.
   http://www-ksl.stanford.edu/onto-std/mailarchive/0136.html

» What is an Ontology?
   Short and long answers from Tom Gruber of Knowledge Systems Lab at Stanford University.
   http://www-ksl.stanford.edu/kst/what-is-an-ontology.html

» You're It
   A weblog about social tagging.
   http://tagsonomy.com/