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OpenCyc is getting even better!
OpenCyc is not available right now, but should be back shortly.
We've got a new release on the way that will have even more content, be more portable, perform better,
and be more robust. We apologize for the inconvenience and appreciate your patience.
In the meanwhile,
you can now download OWL versions of the OpenCyc ontology,
or search for and access OpenCyc content on the semantic web, accessing Cyc concepts via their URIs,
at sw.opencyc.org.
You can also browse the content of the OpenCyc knowledge base
using the Cyc Foundation Browser.
OpenCyc
OpenCyc is the open source version of the
Cyc
technology, the world's largest and most complete general knowledge base and commonsense
reasoning engine. OpenCyc can be used as the basis of a wide variety of intelligent
applications such as:
- rapid development of an ontology in a vertical area
- email prioritizing, routing, summarization, and annotating
- expert systems
- games
to name just a few.
Release 1.0.2 of OpenCyc includes:
- The entire Cyc ontology containing hundreds of thousands of terms,
along with millions of assertions relating
the terms to each other, forming an upper ontology whose domain is all of human
consensus reality.
- English strings corresponding to all concept terms, to assist with
search and display.
- A compiled version of the Cyc Inference Engine and the Cyc
Knowledge Base Browser.
- Documentation and self-paced learning materials to help users
achieve a basic- to intermediate-level
understanding of the issues of knowledge
representation and application development using
Cyc.
- A specification of CycL, the language in which Cyc
(and hence OpenCyc) is written.
- A
specification of the Cyc API for application development.
-
NEW! Links between Cyc concepts and WordNet synsets.
Cyc Training available December 1, 2008 --
Cycorp will be offering a three-day, hands-on Cyc introductory course in Austin, TX
during the Spring of 2009 followed by a two-day class covering advanced Cyc topics.
Click here
for additional information or contact us at
cyc101 @ cyc.com for information about customized semantic knowledge management
or ontology development training.
Announcing: The Cyc Foundation Austin, TX. April 14, 2006 --
A new independent non-profit organization was announced Thursday night at the monthly
meeting of Cyclify-Austin, the Cyc User's group. The Cyc Foundation
is now forming to manage the OpenCyc ontology and to grow
the ontology and knowledge base exponentially with the help of
volunteers from all walks of life.
Foundation president, John De Oliveira, compared the Foundation's "Cyclify"
effort to the Wikipedia project. He said, "The Wikimedia Foundation asks us
to 'Imagine a world in which every single person is given free access to the
sum of all human knowledge.' In the Cyclify project, led by The Cyc Foundation,
we ask you to imagine a world in which every single person is given free access
to programs that reason with the sum of all human knowledge."
Those interested in participating in the Cyclify Project or assisting the Cyc Foundation
in any way should send email to johndcyc@gmail.com.
| How to Join |
| To subscribe to any
of our mailing lists, click here.
OpenCyc is being considered as a standard by the IEEE. You can learn about participating in the
Standard Upper Ontology working group by visiting http://suo.ieee.org/. Anyone can become a voting member by visiting
here.
OpenCyc
development is being hosted at:
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The OpenCyc KB Browser
| Announcements |
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2009/01/09 - The Spring 2009 session of
Cyc Training will be held
during the week of May 11th, 2009 in Austin, Texas.
2008/08/18 -
Read about the release of OpenCyc semantic web endpoints and how OpenCyc Brings Meaning to the Web
2008/08/08 -
Cycorp is pleased to announce the Cyc ATP Challenges at CASC!-J4
2007/03/10 - A new,
simplified browser is available from
The Cyc Foundation to let you explore the contents the OpenCyc ontology.
2006/04/03 - Cyclify Austin meets on the second Thursday of each month
in Austin, TX. All members of the OpenCyc community are welcome.
For details, please send an email to opencyc@cyc.com.
2004/06/04 - The
OWL scaffolding version of OpenCyc v0.7.8b can be found here (>700MB). This file contains #$isa, #$genls and
#$comment assertions for over 60,000 Cyc constants. Caution: This file takes approximately 9 hours to load into Protege.
2004/03/26 - The
OWL version of OpenCyc v0.6.0b can be found here.
2001/06/07 - The
CycML schema document can be found here.
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