The Ontology Page
Ontology Projects World-Wide

Projects addressing major ontology construction issues include:

The ARPA/Rome Laboratory Planning Initiative (ARPI) Planning Ontology Construction Group (POCG), growing out of the older Knowledge Representation Specification Language (KRSL) effort.
The MIT LCS Clinical Decision-Making Group Guardian Angel project
The MIT LCS Planning Ontology Project
The USC ISI SENSUS project
The Edinburgh Plan Ontology Project
ARPA Knowledge Sharing Effort library
The Ontolingua Project
- Ontolingua via KSL Interactive Network Services
- Ontolingua Ontology Library
Ontological Foundations of Knowledge Engineering at the Institute for Systems Science and Biomedical Engineering of the Italian National Research Council (CNR)
IRST Knowledge Representation and Reasoning group
The Toronto Virtual Enterprise (TOVE) project
The Cyc Project
The Mikrokosmos ontology: An in-depth, broad coverage ontology for multilingual Natural Language Processing
The ThoughtTreasure ontology. This ontology is available under the terms of the GNU General Public License. It consists of 21,521 concepts and 37,162 assertions and is part of the ThoughtTreasure artificial intelligence program/tool set, which contains much else besides the ontology.

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Last modification by top-webmaster on 20 November 1995