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id="bodyContent" class="vector-body"> <div id="siteSub" class="noprint">From Wikidata</div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="contentSub2"></div> <div id="jump-to-nav"></div> <a class="mw-jump-link" href="#mw-head">Jump to navigation</a> <a class="mw-jump-link" href="#searchInput">Jump to search</a> <div id="mw-content-text" class="mw-body-content"><div class="mw-pt-translate-header noprint nomobile" dir="ltr" lang="en"><a href="/w/index.php?title=Special:Translate&group=page-Help%3ADeprecation&action=page&filter=&action_source=translate_page" title="Special:Translate">Translate this page</a></div><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="mw-pt-languages noprint navigation-not-searchable" lang="en" dir="ltr"><div class="mw-pt-languages-label">Other languages:</div><ul class="mw-pt-languages-list"><li><a href="/wiki/Help:Deprecation/en-gb" class="mw-pt-progress mw-pt-progress--high" title="Help:Deprecation (95% translated)" lang="en-GB" dir="ltr">British English</a></li> <li><a href="/wiki/Help:Deprecation/de" class="mw-pt-progress mw-pt-progress--complete" title="Help:Missbilligung (100% translated)" lang="de" dir="ltr">Deutsch</a></li> <li><span class="mw-pt-languages-ui mw-pt-languages-selected mw-pt-progress mw-pt-progress--complete" lang="en" dir="ltr">English</span></li> <li><a href="/wiki/Help:Deprecation/lb" class="mw-pt-progress mw-pt-progress--low" title="Help:Deprecation/lb (10% translated)" lang="lb" dir="ltr">Lëtzebuergesch</a></li> <li><a href="/wiki/Help:Deprecation/nl" class="mw-pt-progress mw-pt-progress--complete" title="Help:Deprecation/nl (100% translated)" lang="nl" dir="ltr">Nederlands</a></li> <li><a href="/wiki/Help:Deprecation/tr" class="mw-pt-progress mw-pt-progress--high" title="Help:Karşı koyma (90% translated)" lang="tr" dir="ltr">Türkçe</a></li> <li><a href="/wiki/Help:Deprecation/az" class="mw-pt-progress mw-pt-progress--med" title="Kömək:Köhnəlmə (24% translated)" lang="az" dir="ltr">azərbaycanca</a></li> <li><a href="/wiki/Help:Deprecation/da" class="mw-pt-progress mw-pt-progress--low" title="Help:Deprecation/da (10% translated)" lang="da" dir="ltr">dansk</a></li> <li><a href="/wiki/Help:Deprecation/es" class="mw-pt-progress mw-pt-progress--high" title="Ayuda:Desaprobación (95% translated)" lang="es" dir="ltr">español</a></li> <li><a href="/wiki/Help:Deprecation/fr" class="mw-pt-progress mw-pt-progress--complete" title="Aide:Dépréciation (100% translated)" lang="fr" dir="ltr">français</a></li> <li><a href="/wiki/Help:Deprecation/pl" class="mw-pt-progress mw-pt-progress--low" title="Help:Deprecation/pl (14% translated)" lang="pl" dir="ltr">polski</a></li> <li><a href="/wiki/Help:Deprecation/ru" class="mw-pt-progress mw-pt-progress--low" title="Help:Deprecation/ru (5% translated)" lang="ru" dir="ltr">русский</a></li> <li><a href="/wiki/Help:Deprecation/uk" class="mw-pt-progress mw-pt-progress--low" title="Help:Deprecation/uk (5% translated)" lang="uk" dir="ltr">українська</a></li> <li><a href="/wiki/Help:Deprecation/ja" class="mw-pt-progress mw-pt-progress--complete" title="Help:正しくない値の扱い方 (100% translated)" lang="ja" dir="ltr">日本語</a></li></ul></div> <figure class="mw-halign-right" typeof="mw:File"><a href="/wiki/File:Deprecated_rank.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/2/2c/Deprecated_rank.svg/50px-Deprecated_rank.svg.png" decoding="async" width="50" height="125" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/2c/Deprecated_rank.svg/75px-Deprecated_rank.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/2c/Deprecated_rank.svg/100px-Deprecated_rank.svg.png 2x" data-file-width="8" data-file-height="20"/></a><figcaption></figcaption></figure> <style data-mw-deduplicate="TemplateStyles:r2202362292">.mw-parser-output th.mbox-text,.mw-parser-output td.mbox-text{border:none;padding:0.25em 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#c0c090}.mw-parser-output table.fmbox{clear:both;margin:0.2em 0;width:100%;border:1px solid var(--border-color-base,#a2a9b1);background-color:var(--background-color-neutral-subtle,#f8f9fa);box-sizing:border-box}.mw-parser-output table.fmbox-system{background-color:var(--background-color-neutral-subtle,#f8f9fa)}.mw-parser-output table.fmbox-warning{border:1px solid #bb7070;background-color:#ffdbdb}.mw-parser-output table.fmbox-editnotice{background-color:transparent}html body.mediawiki .mw-parser-output .mbox-small{clear:right;float:right;margin:4px 0 4px 1em;box-sizing:border-box;width:238px;font-size:88%;line-height:1.25em}html body.mediawiki .mw-parser-output .mbox-small-left{margin:4px 1em 4px 0;box-sizing:border-box;overflow:hidden;width:238px;border-collapse:collapse;font-size:88%;line-height:1.25em}</style><table class="plainlinks ombox ombox-notice" role="presentation"><tbody><tr><td class="mbox-image"><span typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/2/2b/Walnut.svg/30px-Walnut.svg.png" decoding="async" width="30" height="30" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/2b/Walnut.svg/45px-Walnut.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/2b/Walnut.svg/60px-Walnut.svg.png 2x" data-file-width="192" data-file-height="192"/></span></span></td><td class="mbox-text"><bdi lang="en"><b>This page in a nutshell:</b></bdi> Often, property values in Wikidata should be <a href="/wiki/Special:MyLanguage/Help:Ranking" title="Special:MyLanguage/Help:Ranking">ranked</a> as <b>deprecated</b>, not removed. Consider whether including the data is still useful.</td></tr></tbody></table> <p>Statements in Wikidata should be <a href="/wiki/Special:MyLanguage/Help:Ranking" title="Special:MyLanguage/Help:Ranking">ranked</a> as <b>deprecated</b> (and not removed) if they are: </p> <ul><li>superseded (as opposed to "outdated"; see note on 'end date', below)</li> <li>now known to be wrong, but were once thought correct</li></ul> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r2202362292"><table class="plainlinks ombox ombox-style" role="presentation"><tbody><tr><td class="mbox-image"><bdi lang="en"><span typeof="mw:File"><a href="/wiki/File:OOjs_UI_icon_notice-warning.svg" class="mw-file-description"><img alt="Warning" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/OOjs_UI_icon_notice-warning.svg/40px-OOjs_UI_icon_notice-warning.svg.png" decoding="async" width="40" height="40" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/OOjs_UI_icon_notice-warning.svg/60px-OOjs_UI_icon_notice-warning.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4c/OOjs_UI_icon_notice-warning.svg/80px-OOjs_UI_icon_notice-warning.svg.png 2x" data-file-width="20" data-file-height="20"/></a></span></bdi></td><td class="mbox-text"><bdi lang="en"><strong>Warning:</strong></bdi> All statements, including deprecated ones, must be verifiable. Deprecation is not an option for information that can not be publicly sourced, e.g. non-public personal information about subject of an item. <a href="/wiki/Special:MyLanguage/Wikidata:Living_people" title="Special:MyLanguage/Wikidata:Living people">Wikidata:Living people</a> applies to all statements, including deprecated ones.</td></tr></tbody></table> <div id="toc" class="toc" role="navigation" aria-labelledby="mw-toc-heading"><input type="checkbox" role="button" id="toctogglecheckbox" class="toctogglecheckbox" style="display:none" /><div class="toctitle" lang="en" dir="ltr"><h2 id="mw-toc-heading">Contents</h2><span class="toctogglespan"><label class="toctogglelabel" for="toctogglecheckbox"></label></span></div> <ul> <li class="toclevel-1 tocsection-1"><a href="#Background"><span class="tocnumber">1</span> <span class="toctext">Background</span></a></li> <li class="toclevel-1 tocsection-2"><a href="#Reason_for_deprecation"><span class="tocnumber">2</span> <span class="toctext">Reason for deprecation</span></a></li> <li class="toclevel-1 tocsection-3"><a href="#How_to_apply_ranks"><span class="tocnumber">3</span> <span class="toctext">How to apply ranks</span></a></li> <li class="toclevel-1 tocsection-4"><a href="#Outdated_statements_and_'end_date'"><span class="tocnumber">4</span> <span class="toctext">Outdated statements and 'end date'</span></a></li> <li class="toclevel-1 tocsection-5"><a href="#Examples"><span class="tocnumber">5</span> <span class="toctext">Examples</span></a></li> </ul> </div> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Background" data-mw-thread-id="h-Background"><span data-mw-comment-start="" id="h-Background"></span>Background<span data-mw-comment-end="h-Background"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Help:Deprecation&action=edit&section=1" title="Edit section: Background"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The Wikidata web frontend has a different role than the Wikipedia web frontend has. At Wikidata, data users typically do not use the web frontend (they use the <a href="/wiki/Q20950365" title="Q20950365">Wikidata Query Service <small>(Q20950365)</small></a> or Wikipedia templates/modules), thus the web frontend is basically a tool for editors only and it is perfectly fine and desirable to have "wrong" or "multiple" values in items, if ranks and sources are properly used. In contrast, Wikipedia readers use the same frontend as Wikipedia editors do, which implies to remove "wrong" values from articles in most cases. </p><p>Marking statements as deprecated instead of simply deleting them has several benefits: </p> <ul><li>it allows other users to know not to re-add the value to the item</li> <li>such statements ("known to be untrue", "is not") are necessary in <a href="/wiki/Q851949" title="Q851949">open-world assumption <small>(Q851949)</small></a> systems, such as <a href="/wiki/Q826165" title="Q826165">Web Ontology Language <small>(Q826165)</small></a>, by removing "trivial" claims we reduce usage of Wikidata for other purposes</li> <li>it provides a mechanism for representing the evolution of theories and ideas and thereby creates a richer context for understanding human knowledge. This is especially valuable in automated classification systems along with <a href="/wiki/Property:P1889" title="Property:P1889">different from <small dir="ltr">(P1889)</small></a> and similar properties</li> <li>it upholds and establishes the integrity of Wikidata as a secondary knowledge base (that collects and links to references), rather than a primary database of facts. Wikidata simply provides information according to specific sources; those sources may or may not reflect contemporary thought or scientific consensus</li></ul> <p>At this point it should also be mentioned that deprecated statements are not visible for data users, unless they are explicitly asked for. This applies to the Query Service as well as to Wikipedia parser functions (such as <code>{{#property:}}</code> and <code>{{#statement:}}</code>). Superseded or wrong data, which is correctly tagged with deprecated rank at Wikidata, does therefore not pollute Wikipedia infoboxes, etc. </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Reason_for_deprecation" data-mw-thread-id="h-Reason_for_deprecation"><span data-mw-comment-start="" id="h-Reason_for_deprecation"></span>Reason for deprecation<span data-mw-comment-end="h-Reason_for_deprecation"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Help:Deprecation&action=edit&section=2" title="Edit section: Reason for deprecation"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>A deprecated value should always have a <a href="/wiki/Property:P2241" title="Property:P2241">reason for deprecated rank <small dir="ltr">(P2241)</small></a> qualifier - see <a class="external text" href="https://query.wikidata.org/#SELECT%20%3Freason%20%3FreasonLabel%20%28COUNT%28%3Freason%29%20AS%20%3Fcount%29%20%7B%20%5B%5D%20pq%3AP2241%20%3Freason%20.%20SERVICE%20wikibase%3Alabel%20%7B%20bd%3AserviceParam%20wikibase%3Alanguage%20%27en%27%20%7D%20%7D%20GROUP%20BY%20%3Freason%20%3FreasonLabel%20ORDER%20BY%20DESC%28%3Fcount%29">values already used for this</a> (some may be sub-optimal). Some of the potentially useful ones are: </p> <ul><li><a href="/wiki/Q25895909" title="Q25895909">cannot be confirmed by other sources <small>(Q25895909)</small></a> - general use</li> <li><a href="/wiki/Q21655367" title="Q21655367">not been able to confirm this claim <small>(Q21655367)</small></a> - general use</li> <li><a href="/wiki/Q14946528" title="Q14946528">conflation <small>(Q14946528)</small></a> - general use. Refer to <a href="/wiki/Special:MyLanguage/Help:Conflation_of_two_persons" title="Special:MyLanguage/Help:Conflation of two persons">Help:Conflation of two persons</a> for guidance on how to use this <a href="/wiki/Q27949697" title="Q27949697">Wikibase reason for deprecated rank <small>(Q27949697)</small></a>.</li> <li><a href="/wiki/Q115099570" title="Q115099570">conflation of depiction and metadata from different objects <small>(Q115099570)</small></a> - more specific subset of <a href="/wiki/Q14946528" title="Q14946528">conflation <small>(Q14946528)</small></a></li> <li><a href="/wiki/Q41755623" title="Q41755623">incorrect value <small>(Q41755623)</small></a> - general use</li> <li><a href="/wiki/Q21441764" title="Q21441764">withdrawn identifier value <small>(Q21441764)</small></a> for identifiers</li> <li><a href="/wiki/Q21124171" title="Q21124171">person found to be alive <small>(Q21124171)</small></a> for <a href="/wiki/Property:P570" title="Property:P570">date of death <small dir="ltr">(P570)</small></a></li> <li><a href="/wiki/Q25235916" title="Q25235916">election result invalidated <small>(Q25235916)</small></a></li> <li><a href="/wiki/Q24629887" title="Q24629887">withdrawn award <small>(Q24629887)</small></a></li> <li><a href="/wiki/Q41787617" title="Q41787617">award subsidiary in rank to later award <small>(Q41787617)</small></a> - awards in an order of chivalry</li> <li><a href="/wiki/Q35779580" title="Q35779580">possibly invalid entry requiring further references <small>(Q35779580)</small></a> - general use</li></ul> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="How_to_apply_ranks" data-mw-thread-id="h-How_to_apply_ranks"><span data-mw-comment-start="" id="h-How_to_apply_ranks"></span>How to apply ranks<span data-mw-comment-end="h-How_to_apply_ranks"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Help:Deprecation&action=edit&section=3" title="Edit section: How to apply ranks"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>See <a href="/wiki/Special:MyLanguage/Help:Ranking#How_to_apply_ranks" title="Special:MyLanguage/Help:Ranking">Help:Ranking</a>. </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Outdated_statements_and_'end_date'" data-mw-thread-id="h-Outdated_statements_and_'end_date'"><span id="Outdated_statements_and_.27end_date.27"></span><span data-mw-comment-start="" id="h-Outdated_statements_and_'end_date'"></span>Outdated statements and 'end date'<span data-mw-comment-end="h-Outdated_statements_and_'end_date'"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Help:Deprecation&action=edit&section=4" title="Edit section: Outdated statements and 'end date'"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>If a value becomes out-of-date, for example: </p> <ul><li>population change measured by a new census</li> <li>spouse no longer applies due to divorce</li> <li>position held no longer applies to due to retirement, or after an election</li></ul> <p>the value should not be deprecated, but instead an <a href="/wiki/Property:P582" title="Property:P582"><i>end time</i> qualifier</a> should be added. </p> <div class="mw-heading mw-heading2 ext-discussiontools-init-section"><h2 id="Examples" data-mw-thread-id="h-Examples"><span data-mw-comment-start="" id="h-Examples"></span>Examples<span data-mw-comment-end="h-Examples"></span></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Help:Deprecation&action=edit&section=5" title="Edit section: Examples"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Q23015723" title="Q23015723">Karl Zilles <small>(Q23015723)</small></a> has two values for <a href="/wiki/Property:P496" title="Property:P496">ORCID iD <small dir="ltr">(P496)</small></a>; one is deprecated, with the reason <a href="/wiki/Q21441764" title="Q21441764">withdrawn identifier value <small>(Q21441764)</small></a></li></ul> <ul><li><a href="/wiki/Q9711" title="Q9711">Honoré de Balzac <small>(Q9711)</small></a> has two values for <a href="/wiki/Property:P570" title="Property:P570">date of death <small dir="ltr">(P570)</small></a>: 18 and 19 August 1850. According to <a href="/wiki/Q681680" title="Q681680">La Mort de Balzac <small>(Q681680)</small></a> and most other sources Balzac died in the evening of August 18. The reference supporting August 19 claim is <a href="/wiki/Q36578" title="Q36578">Integrated Authority File <small>(Q36578)</small></a> by <a href="/wiki/Q27302" title="Q27302">German National Library <small>(Q27302)</small></a>, which is usually a reliable source and which does not specify where the information come from. August 19 claim is tagged as deprecated, with the reason <a href="/wiki/Q41755623" title="Q41755623">incorrect value <small>(Q41755623)</small></a>. Interestingly August 17 is also mentioned as date of Balzac death in <a rel="nofollow" class="external text" href="https://www.trivia-library.com/b/famous-people-cause-of-death-honore-de-balzac.htm">trivia-library.com</a>, which is not mentioned in <a href="/wiki/Q9711" title="Q9711">Honoré de Balzac <small>(Q9711)</small></a> as not considered a reliable source.</li></ul>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" href="https://www.wikidata.org/w/index.php?title=Help:Deprecation&oldid=2055190379">https://www.wikidata.org/w/index.php?title=Help:Deprecation&oldid=2055190379</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Special:Categories" title="Special:Categories">Category</a>: 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