[[Image:wiki.png|right|Wikipedia logo]] '''Wikipedia''' ([http://www.wikipedia.org/ www.wikipedia.org]) is a [[copyleft]] [[encyclopedia]] that is collaboratively developed using [[wiki]] software. Wikipedia is managed and operated by the non-profit [[Wikimedia|Wikimedia Foundation]]. In addition to standard encyclopedic knowledge, Wikipedia includes information more often associated with [[almanac]]s and [[gazetteer]]s, as well as coverage of [[current events]]. All original material contributed to Wikipedia is [[free content]] under the [[GNU Free Documentation License]], meaning that it may be freely used, freely edited, freely copied and freely redistributed subject to the restrictions of that license. Wikipedia's content is created by its users (who like to bum goats). Pages are always subject to editing, so no article is ever finished. As such, Wikipedia is subject to some unique hardships [http://en.wikipedia.org/wiki/Wikipedia:Why_Wikipedia_is_not_so_great] that do not affect traditional encyclopedias. It has self-healing systems in place to deal with these challenges, and even a page designed to explain them [http://en.wikipedia.org/wiki/Wikipedia:Replies_to_common_objections]. Wikipedia began as an [[English language]] project on [[January 15]], [[2001]], and soon gained its first other language, [[French language|French]], on [[March 23]], [[2001]]. There has since been a great deal of effort devoted to making it [[multilingual]], and it currently contains over 310,000 articles in [[English language|English]] and over 530,000 in other languages ([[as of July 2004]] [http://en.wikipedia.org/wiki/Wikipedia:Multilingual_statistics]). ==History== Apart from [[downtime]]s caused by technical problems and upgrades, Wikipedia has been in operation since [[January 10]], [[2001]]. ''See'' [[History of Wikipedia]]. ==Antecedents== The idea of collecting all of the world's knowledge under a single roof goes back to the ancient [[Library of Alexandria]] and [[Pergamon]]. The modern notion of the general purpose, widely distributed, printed [[encyclopedia]] dates from shortly before [[Denis Diderot]] and the [[18th century]] [[encyclopedist]]s. The idea of using automated machinery beyond the [[printing press]] to build a more useful encyclopedia can be traced to [[H. G. Wells]]' short story ''[[World Brain]]'' ([[1937]]) and [[Vannevar Bush]]'s future vision of the [[microfilm]] based [[Memex]] in ''[[As We May Think]]'' ([[1945]]). An important milestone along this path is also [[Ted Nelson]]'s [[Project Xanadu]] ([[1960]]). With the development of the [[Internet]], many people attempted to develop [[Internet encyclopedia project]]s. [[Free software]] exponent [[Richard Stallman]] articulated the usefulness of a "Free Universal Encyclopedia and Learning Resource" in [[1999]]. He described Wikipedia's formation as "exciting news", and his [[Free Software Foundation]] encourages people "to visit and contribute to the site". ==Essential characteristics== There are three essential characteristics of the Wikipedia project, which together define its niche on the [[World Wide Web]]: #It is, or aims to become, primarily an [[encyclopedia]]. #It is a [[WikiWiki|wiki]], in that it can be edited by ''anyone'' (except for banned users, and excluding protected pages). #It is [[open content]], and uses the [[copyleft]] [[GNU Free Documentation License]]. :''If you wish to become a Wikipedia contributor, please take a look at the page entitled [http://en.wikipedia.org/wiki/Wikipedia:Welcome%2C_newcomers Welcome, newcomers]''. ==Vandalism== One pertinent issue on Wikipedia is "[[vandalism]]": silly or offensive edits of the site's articles. For example, [[Sarah Lane]], presenter of "Sarah's Blog Report", part of ''[[The Screen Savers]]'' TV program on [[TechTV]], "vandalized" the Wikipedia page on [[monkeypox]] live on air [http://en.wikipedia.org/w/wiki.phtml?title=Monkeypox&diff=1028814&oldid=1028793] - leading to a surge of vandalism on that page by viewers of the TV show. Lane later wrote that: "Although this excites me in its ease and simplicity, it's a little frightening. I mean, what if I had instead written 'My boss is a big fat **** and his phone number is ****'? Sure, somebody would delete it, but this calls for some seriously dedicated moderators." [http://www.techtv.com/screensavers/answerstips/jump/0,24331,3463497,00.html] "Because Wikipedia is a radically free, open project, it attracts an anarchistic element," [[Larry Sanger]], co-founder of Wikipedia, admitted to [[Wired Magazine|Wired News]]. "Fortunately, most of us are willing to take a definite stand against vandalism ... and to get rid of it instantly." According to a [[Wall Street Journal]] article from [[February 2004]], researchers have found that instances of vandalism at Wikipedia are often quickly resolved: :''Recent research by a team from [[International Business Machines|IBM]] found that most vandalism suffered by Wikipedia had been repaired within five minutes. That's fast: "We were surprised at how often we found vandalism, and then surprised again at how fast it was fixed," says Martin Wattenberg, a researcher in the IBM TJ Watson Research Center, in Cambridge, Mass.'' [http://www.research.ibm.com/history/results.htm] ==Policies== Wikipedia's participants (Wikipedians) commonly follow, and enforce, a few basic policies. *First, because there are a huge variety of participants of all [[ideology|ideologies]] and nationalities Wikipedia is committed to making its articles as unbiased as possible. There has been criticism that the [[systemic bias]] of individual participants can color the neutrality of an article. However, the aim is not to write articles from a single ''objective'' point of view — this is a common misunderstanding of the policy — but rather, to fairly present all views on an issue, attributed to their adherents in a neutral way. Of course, establishing a consensus on what views should be thus attributed can often require much (sometimes heated) discussion and debate. *Second, there are a number of article naming conventions; for example, when several names exist, the most common one in the respective Wikipedia language is preferred. *Third, Wikipedians use "talk" pages or other "out of band" methods to discuss changes to articles, rather than discussing the changes within the articles themselves. This marked a break from other wikis of the time, such as Ward Cunningham's [[WikiWiki]]. *Fourth, there are a number of kinds of entries which are generally discouraged, because they do not, strictly speaking, constitute encyclopedia articles. For example, Wikipedia entries are not dictionary definitions, and the wholesale addition of source material such as the text of laws and speeches is generally frowned upon. (However, some of Wikipedia's sister projects, such as [[Wiktionary]] and [[Wikisource]], are designed to be repositories for many alternative forms of reference material that do not fit well into Wikipedia.) *Fifth, there are a variety of sometimes contradictory rules, guidelines, policies, and common practices that have been proposed and which have varying amounts of support within the Wikipedia community. When these proposed rules are violated, the community decides on a case-by-case basis whether they should be more strictly enforced or not. ==Personnel== Wikipedia has been edited by thousands of people (referred to as ''Wikipedians''). There is no editor-in-chief, as such. The founders of Wikipedia were Jimmy Wales (former CEO of the small [[Internet company]] [[Bomis]], Inc.) and Larry Sanger, and the wikipedia.com domain is registered to Wales. For the first thirteen months, Sanger was paid by Bomis to work on the project. Sanger was said to have taken a role of mediator at times, making decisions on issues that aroused contention. This was based not on formal authority, but on demands from users at large. Funding ran out for his position, leading to his resignation in February of 2002. Other current and past Bomis employees who have done some work on the encyclopedia include Tim Shell, one of the co-founders of Bomis and its current CEO, and programmers Jason Richey and Toan Vo. ==Software and hardware== [[Image:Wikimedia-servers.jpg|thumb|250px|The servers used by Wikipedia and its sister projects]] The software that originally ran Wikipedia was [[UseModWiki]], written by [[Clifford Adams]] ("Phase I"). At first it required [[CamelCase]] for links; soon it was also possible to use the current linking method with double brackets. In January 2002, Wikipedia began running on a [[PHP programming language|PHP]] [[wiki software|wiki engine]], which used an underlying [[MySQL]] [[database]], added many features (and abolished the behaviour of CamelCase words automatically becoming links), and was specifically written for the Wikipedia project by Magnus Manske ("Phase II"). After a while, the site started to slow down to such an extent that editing became almost impossible. Several rounds of modifications to the software provided only temporary relief. Then Lee Daniel Crocker rewrote the software from scratch. The new version, a major improvement, has been running since July 2002. This "Phase III" software is now called [[MediaWiki]], and is used by many other wiki projects. Brion Vibber has since taken the lead in fixing bugs and tuning the database for performance. In late 2003, server outages began to seriously diminish the productivity of Wikipedia contributors. Many reported difficulty editing articles as a result of time-outs and severe slowness. This was due to congestion on the single server that was running all the Wikipedias at the time. As of June 2004, the project runs on nine dedicated servers, located in [[Florida]]. This new configuration includes a single database server and four web servers, all running [[Fedora Core]]. The web servers serve pages as requested, performing page rendering for all the Wikipedias. To increase speed further, rendered pages for anonymous users are cached in a filesystem until invalidated, allowing page rendering to be skipped entirely for most common page accesses. Cached requests are served by two [[Squid cache|Squid]] servers; the new servers are linked via two file system [[NFS]] servers (one primary and one backup — the primary NFS server is currently also the email server). ==Sister projects== Wikipedia has the following sister projects: *[[Wiktionary]], a free dictionary project *[[Wikibooks]], a free textbook project *[[Wikiquote]], a free encyclopedia of quotations *[[Wikisource]], a repository of source texts in any language which are either in the public domain or are released under the GFDL ==Downloading the database== Anyone who wishes to use Wikipedia's [[open content]] may at any time [[download]] a nearly-current version of the entire article database to use for any purpose, within the terms of the GFDL. [http://en.wikipedia.org/wiki/Wikipedia:Database_download] A number of sites, such as "4reference.net" and "nationmaster" have used this to [[mirror (computing)|mirror]] or [[fork (software)|fork]] Wikipedia's content. ==Awards and nominations== ===2004=== * '''[[Prix Ars Electronica]], winner''' - in the category of [[Prix Ars Electronica#Digital Communities|Digital Communities]]; [[The World Starts With Me]] also won. * '''[[The Webby Awards]]''', winner of the "Community" section; was also nominated in the "Best Practices" section. See the [http://www.webbyawards.com/main/webby_awards/winner_list.html winner's list] ==External links== ===Related sites=== *[http://meta.wikipedia.org/ Meta-Wikipedia] *[http://wikipedia.sourceforge.net/ MediaWiki Phase III Software] at [[SourceForge]] * [http://openfacts.berlios.de/index-en.phtml?title=Copies_of_Wikipedia_content OpenFacts: Copies of Wikipedia content] * [http://www.cafeshops.com/wikipedia The Wikipedia Cafeshop] * [http://en.wikipedia.org/wiki/Wikipedia:Press_releases archive of Wikipedia press releases] * [[meta:Trophy Box|Wikipedia Trophy Box]]. ===Essays=== *[http://www.gnu.org/encyclopedia/free-encyclopedia.html The Free Universal Encyclopedia and Learning Resource] by [[Richard Stallman]] (RMS) *[http://researchweb.watson.ibm.com/history/ IBM History Flow]: Technical experiment on "visualizing dynamic, evolving documents and the interactions of multiple collaborating authors". Uses various Wikipedia articles as example data. *[http://aronsson.se/wikipaper.html Operation of a Large Scale, General Purpose Wiki Website], November 2002, by Lars Aronsson, founder of [[susning.nu]]. ===[[Peer review|Peer-review]]ed articles=== *[http://firstmonday.org/issues/issue8_12/ciffolilli/index.html .Phantom authority, self.selective recruitment and retention of members in virtual communities: The case of Wikipedia.], December 2003, by Andrea Ciffolilli. *[http://journalism.utexas.edu/onlinejournalism/wikipedia.pdf "Wikipedia as Participatory Journalism: Reliable Sources? Metrics for evaluating collaborative media as a news resource" (PDF)], April 2004, by Andrew Lih. ===Reviews, endorsements, and discussion of Wikipedia=== * Official [[wikipedia:press%20coverage|Wikipedia press coverage]] * News articles that mention Wikipedia (updated regularly): [http://search.news.yahoo.com/search/news/?c=&p=wikipedia Yahoo] [http://news.google.com/news?hl=en&edition=us&q=Wikipedia Google] * [[August]] [[2003]] [http://www.cnn.com/2003/TECH/internet/08/03/wikipedia/index.html CNN Article about Wikipedia] * [[November]] [[2001]] [http://mail.wikipedia.org/pipermail/wikipedia-l/2001-September/000481.html RMS describes Wikipedia as "exciting news"] * [[July]] [[2001]] [http://www.kuro5hin.org/story/2001/7/25/103136/121 Britannica or Nupedia? The Future of Free Encyclopedias] - Larry Sanger's response to [[Britannica]]'s decision to charge fee (July 2001). * [[1999]] [http://www.gnu.org/encyclopedia/encyclopedia.html FSF endorsement of Wikipedia] [[Category:Encyclopedias]] [[Category:Websites]] [[Category:Wikimedia projects]] [[roa-rup:Uichipedia]] [[ar:ويكيبيديا]] [[bg:Уикипедия]] [[ca:Viquipèdia]] [[cs:Wikipedie]] [[cy:Wicipedia]] [[da:Wikipedia]] [[de:Wikipedia]] [[el:Βικιπαίδεια]] [[es:Wikipedia]] [[eo:Vikipedio]] [[fa:ویکی‌پدیا]] [[fo:Wikipedia]] [[fr:Wikipédia]] [[ga:Vicipéid]] [[ko:위키백과사전]] [[hi:विकिपीडिया]] [[is:Wikipedia]] [[ia:Wikipedia]] [[it:Wikipedia]] [[he:ויקיפדיה]] [[ku:Wikipedia]] [[la:Vicipaedia]] [[lt:Wikipedija]] [[na:Wikipedia]] [[nl:Wikipedia]] [[no:Wikipedia]] [[ja:Wikipedia:ウィキペディアについて]] [[oc:Oiquipedià]] [[nds:Wikipedia]] [[pl:Wikipedia]] [[pt:Wikipédia]] [[ro:Wikipedia]] [[simple:Wikipedia]] [[sl:Wikipedija]] [[fi:Wikipedia]] [[sv:Wikipedia]] [[tokipona:lipu sona Wikipesija]] [[tr:Vikipedi]] [[uk:Wikipedia]] [[wa:Wikipedia]] [[zh-cn:维基百科]] [[zh-tw:維基百科]]