Freebase (database)

Freebase (database)

Infobox_Software
name = Freebase



caption =
developer = Metaweb Technologies
latest_release_version = Public alpha
genre = Online database
license = Creative Commons Attribution License
website = [http://www.freebase.com/ Freebase - The World's Database]

Freebase is a highly structured collaborative online database and website developed by Metaweb. Freebase contains data harvested from sources such as Wikipedia and MusicBrainz, as well as individually contributed data from its users.cite news
title = Start-Up Aims for Database to Automate Web Searching
work = The New York Times
date = 2007-03-09
url = http://www.nytimes.com/2007/03/09/technology/09data.html?ex=1331096400&en=a87d4f61e6052888&ei=5090&partner=rssuserland&emc=rss
accessdate = 2007-03-09
]

Freebase runs on a database infrastructure created in-house by Metaweb that utilizes a graph model. Queries to the database are made in "Metaweb Query Language" (MQL).

Description

On March 3, 2007 Metaweb publicly announced Freebase, described by the company as "an open shared database of the world's knowledge," and "a massive, collaboratively-edited database of cross-linked data." Until recently accessible by invitation only, this application is now open to the public in its alpha stage of development.

According to Danny Hillis, "All of the information in Freebase will be available under a license that makes it freely shareable." In the future, the company hopes to generate business revenue by also organizing proprietary data.cite news
title = Start-Up Aims for Database to Automate Web Searching
work = The New York Times
date = 2007-03-09
url = http://www.nytimes.com/2007/03/09/technology/09data.html?ex=1331096400&en=a87d4f61e6052888&ei=5090&partner=rssuserland&emc=rss
accessdate = 2007-03-09
] Freebase has recently opened full anonymous read access to the public, requiring registration only for data contributions.Freebase contains data harvested from sources such as Wikipedia and MusicBrainz, as well as individually contributed data from its users. The structured data is licensed under the Creative Commons Attribution License,cite news
title = Freebase Will Prove Addictive
work = O'Reilly Radar
date = 2007-03-08
url = http://radar.oreilly.com/archives/2007/03/freebase_will_p_1.html
accessdate = 2007-03-09
] and a JSON based HTTP API is provided to programmers for developing applications on any platform to utilize the Freebase data. The source for the Metaweb application itself is proprietary.

Freebase's ontologies — structured data categories, known in Freebase as "types" — are themselves user-editable. Users can experiment with their own types, which can become broadly adopted if accepted by the administrator of the information category or domain it applies to.

Freebase runs on a database infrastructure created in-house by Metaweb that utilizes a graph model.cite news
title = Sharing what matters
work = The Economist
date = 2007-06-07
url = http://www.economist.com/printedition/displaystory.cfm?story_id=9249171
accessdate = 2007-06-15
] Queries to the database are made in "Metaweb Query Language" (MQL).

See also

*Semantic Web

References

External Links

* [http://www.freebase.com/ Official website]
* [http://blog.freebase.com/ Freebase Blog]
* [http://freebasing.org/2007/10/01/mql-tutorial-simple-read-queries/ MQL tutorial: simple read queries]


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