Wikipedia article depth

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The depth or editing depth of Wikipedia is one of several possible rough indicators of the encyclopedia's collaborative quality, showing how frequently its articles are updated.

It does not refer to academic quality, which cannot be computed, but to Wikipedian quality, i.e. the depth of collaborativeness—a descriptor that is highly relevant for a Wikipedia.

Definition[edit]

The formula assumes that a relatively high number of page edits and the presence of support pages means articles have been updated. And the latter support pages are assumed to be a more important factor.

In the list of Wikipedias, depth is currently defined as:

\text{Depth}=\frac{\text{Edits}}{\text{Articles}}\cdot \frac{\text{NonArticles}}{\text{Articles}}\cdot \left( 1-\frac{\text{Articles}}{\text{Total}} \right)

The depth can be simplified to the equivalent formula below:

\text{Depth}=\frac{\text{Edits}}{\text{Total}}\cdot \left( \frac{\text{NonArticles}}{\text{Articles}} \right)^{2}

NonArticles are user pages, redirects, images, "project" pages, categories, templates, and all talk pages. Total is simply NonArticles + Articles.

English Wikipedia has depth of 927 = 21.09 × 43.98 and is the deepest one for Wikipedias with number of articles greater than 10000.

The largest depth for the unblocked Wikipedias has Ripuarian Wikipedia which has the depth 1386 = 214.14 × 6.47.

The smallest depth has Chechen Wikipedia which has the depth 0.116 = 7.06 × 0.016.

Background[edit]

The measurement of depth was introduced after some limitations of the classic measurement of article count were realized. This insight is similar to the various suggestions to redefine the ordering of Wikipedias that appear on the international front page www.wikipedia.org. See Top Ten Wikipedias and Talk:Www.wikipedia.org portal.

Still in early February 2006 the list of Wikipedias only listed the article count. But on February 10, 2006, this changed into a table format that also listed the total edit count, number of users and admins.

The depth column first appeared on November 29, 2006. The initial definition was edits/articles, giving the English Wikipedia a value of 62. This definition changed already the next day to (Edits/Articles) × (Non-Articles/Articles), giving the English Wikipedia a value of 209. The next definition change occurred on October 9, 2007, when the Stub-ratio factor was appended. The stub ratio is (1-(Articles/Total)).[1] The new value for the English Wikipedia was 288. The formula changed again on October 17, October 28, and finally on April 11, 2008.

The discussion of the introduction of the depth parameter is found in Talk:List of Wikipedias/Archive 4. Early on, there were discussions of whether depth implies quality. The changes in October 2007 were discussed in Talk:List of Wikipedias/Archive 5#Depth 2.0.

10 000+ articles[edit]

The table shows the list of Wikipedias with over 10,000 articles sorted by Depth.
Data on this page is automatically updated every day (Purge).

N.B.: Default sorting is by language code, but it is possible to sort the table by any column.


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Language Language (local) Wiki Depth Articles Edits Total Pages
Afrikaans Afrikaans af 31.94 39,891 1,503,658 97,216
Alemannic Alemannisch als 23.4 21,205 697,815 48,153
Amharic አማርኛ am 41.23 13,063 344,957 42,508
Aragonese Aragonés an 79.98 31,370 1,623,671 101,521
Arabic العربية ar 231.54 419,621 22,135,844 2,613,676
Egyptian Arabic مصرى arz 324 15,072 771,024 123,768
Asturian Asturianu ast 4.26 45,827 1,033,454 70,526
Azerbaijani Azərbaycanca az 35.3 104,809 3,779,320 271,912
Bashkir Башҡорт ba 18.53 35,850 608,896 97,647
Bavarian Boarisch bar 92.42 17,436 590,763 78,561
Samogitian Žemaitėška bat-smg 6.37 15,563 351,561 26,310
Belarusian Беларуская be 19.94 115,081 2,390,051 295,904
Belarusian (Taraškievica) Беларуская (тарашкевіца) be-tarask 31.88 58,772 1,919,350 152,228
Bulgarian Български bg 24.14 215,832 7,646,341 482,102
Bengali বাংলা bn 449.11 42,077 2,151,646 449,766
Bishnupriya Manipuri বিষ্ণুপ্রিয়া মণিপুরী bpy 23.53 25,061 805,279 57,558
Breton Brezhoneg br 15.38 58,245 1,778,846 116,771
Bosnian Bosanski bs 132.26 69,455 2,934,352 342,247
Buginese Basa Ugi bug 0.95 14,107 198,200 18,282
Catalan Català ca 30.91 506,397 17,236,877 1,270,816
Chechen Нохчийн ce 0.12 130,670 1,040,777 147,382
Cebuano Sinugboanong Binisaya ceb 1.73 2,200,678 8,352,574 4,270,551
Sorani کوردی ckb 124.84 16,932 512,716 100,829
Czech Čeština cs 39.3 352,605 13,582,635 931,418
Chuvash Чăваш cv 4.13 34,189 582,990 55,641
Welsh Cymraeg cy 54.6 69,678 5,326,719 158,492
Danish Dansk da 65.62 215,893 8,514,841 726,875
German Deutsch de 102.38 1,935,265 158,979,018 5,615,568
Greek Ελληνικά el 71.87 117,265 5,930,828 363,330
English English en 927.42 5,138,914 827,001,959 39,219,474
Esperanto Esperanto eo 16.89 228,275 5,999,161 498,771
Spanish Español es 186.05 1,254,691 90,429,029 5,459,980
Estonian Eesti et 29.34 145,889 4,537,223 372,249
Basque Euskara eu 20.85 246,094 5,560,055 621,928
Persian فارسی fa 208.48 490,556 21,695,071 3,218,898
Finnish Suomi fi 45.4 393,147 16,520,145 1,066,098
Faroese Føroyskt fo 38.94 11,880 348,591 35,555
French Français fr 208.42 1,751,226 128,084,434 8,114,753
West Frisian Frysk fy 21.31 33,564 813,023 83,105
Irish Gaeilge ga 5.46 37,478 823,620 61,399
Scottish Gaelic Gàidhlig gd 21.7 13,802 527,501 28,834
Galician Galego gl 22.81 130,108 4,017,468 299,869
Gujarati ગુજરાતી gu 13.34 26,252 422,452 63,392
Hebrew עברית he 251.36 188,627 19,449,875 792,160
Hindi हिन्दी hi 115.48 102,736 3,175,099 570,867
Croatian Hrvatski hr 31.92 164,550 4,871,099 445,778
Upper Sorbian Hornjoserbsce hsb 31.63 10,555 346,898 27,166
Haitian Krèyol ayisyen ht 0.41 52,376 712,887 62,279
Hungarian Magyar hu 57.31 386,881 18,107,808 1,112,985
Armenian Հայերեն hy 33.31 198,514 4,209,374 648,065
Interlingua Interlingua ia 6.99 19,067 581,891 30,633
Indonesian Bahasa Indonesia id 102.37 379,187 12,526,825 1,855,863
Ido Ido io 5.74 26,589 893,640 40,081
Icelandic Íslenska is 42.9 40,700 1,587,720 111,275
Italian Italiano it 118.96 1,268,963 85,769,655 4,405,796
Japanese 日本語 ja 73.75 1,013,871 60,541,498 2,929,006
Javanese Basa Jawa jv 21.62 48,670 1,078,819 126,013
Georgian ქართული ka 35.12 104,151 3,191,638 290,316
Kazakh Қазақша kk 8.75 216,060 2,533,484 500,054
Kannada ಕನ್ನಡ kn 52.19 20,319 608,300 70,175
Korean 한국어 ko 93.83 346,783 18,124,988 1,217,323
Kurdish Kurdî ku 26.77 21,846 689,173 53,269
Kirghiz Кыргызча ky 0.27 55,365 238,584 70,994
Latin Latina la 10.58 125,520 3,153,704 237,579
Luxembourgish Lëtzebuergesch lb 29.9 45,659 2,001,332 102,030
Limburgish Limburgs li 88.13 11,161 410,258 46,395
Lombard Lumbaart lmo 31.74 33,959 1,081,355 88,782
Lithuanian Lietuvių lt 21.29 176,983 5,202,851 404,735
Latvian Latviešu lv 89.05 67,779 2,585,541 277,207
Banyumasan Basa Banyumasan map-bms 8.75 13,012 207,895 26,844
Malagasy Malagasy mg 10.37 81,256 816,102 215,776
Minangkabau Bahaso Minangkabau min 0.785 221,810 1,371,304 316,187
Macedonian Македонски mk 138.94 85,720 4,280,537 391,150
Malayalam മലയാളം ml 279.04 42,704 2,382,510 292,766
Mongolian Монгол mn 46.44 15,429 487,813 48,624
Marathi मराठी mr 76.83 43,402 1,434,439 177,058
Hill Mari Кырык Мары (Kyryk Mary) mrj 1.13 10,094 91,492 14,335
Malay Bahasa Melayu ms 15.78 282,893 4,154,871 765,143
Burmese language မ္ရန္‌မာစာ my 3.49 32,654 303,275 59,722
Mazandarani مَزِروني mzn 6.43 12,232 136,404 25,696
Nahuatl Nāhuatl nah 26.27 11,323 429,524 25,449
Neapolitan Nnapulitano nap 18.07 14,295 697,738 26,031
Low Saxon Plattdüütsch nds 31.26 25,156 800,517 65,338
Nepali नेपाली ne 20.56 28,306 548,088 76,140
Newari नेवारी new 12.27 72,364 829,606 195,385
Dutch Nederlands nl 11.56 1,867,040 47,661,720 3,615,327
Norwegian (Nynorsk) Nynorsk nn 16.8 126,244 2,867,093 291,140
Norwegian (Bokmål) Norsk (Bokmål) no 36.95 437,690 16,260,484 1,143,183
Occitan Occitan oc 5.54 89,383 2,154,123 143,746
Oriya ଓଡ଼ିଆ or 65.35 10,579 240,769 49,263
Ossetian Иронау os 96.53 10,224 483,692 38,602
Punjabi ਪੰਜਾਬੀ pa 23.8 21,820 324,323 71,967
Polish Polski pl 22.12 1,165,038 45,524,685 2,431,281
Piedmontese Piemontèis pms 2.22 63,918 858,770 95,747
Western Panjabi شاہ مکھی پنجابی pnb 0.54 41,723 456,153 52,071
Portuguese Português pt 134.7 919,765 46,467,512 4,084,794
Quechua Runa Simi qu 34.35 19,546 659,690 51,581
Romanian Română ro 80.97 369,242 10,832,594 1,676,180
Russian Русский ru 134.75 1,307,646 90,399,554 4,808,524
Sanskrit संस्कृतम् sa 99.32 10,012 389,964 43,236
Sakha Саха тыла sah 51.54 10,741 345,993 35,410
Sicilian Sicilianu scn 20.23 25,367 750,847 56,730
Scots Scots sco 27.43 37,603 546,378 135,791
Serbo-Croatian Srpskohrvatski / Српскохрватски sh 513.92 432,384 25,842,132 4,541,606
Sinhalese සිංහල si 93.02 11,778 372,493 55,709
Simple English Simple English simple 173.48 118,590 12,766,477 392,449
Slovak Slovenčina sk 18.55 210,173 6,291,372 453,065
Slovenian Slovenščina sl 24.65 150,496 4,790,755 353,476
Albanian Shqip sq 35.57 54,396 1,751,753 149,012
Serbian Српски sr 65.3 334,481 12,166,602 1,174,149
Sundanese Basa Sunda su 20.69 18,979 490,967 45,165
Swedish Svenska sv 5.99 3,011,028 34,217,580 6,131,584
Swahili Kiswahili sw 25.04 33,052 1,015,108 79,270
Tamil தமிழ் ta 31.34 85,948 2,136,133 250,805
Telugu తెలుగు te 39.34 66,402 1,857,230 204,666
Tajik Тоҷикӣ tg 12.94 46,063 780,656 107,579
Thai ไทย th 256.84 102,217 6,791,843 581,575
Tagalog Tagalog tl 37.84 64,698 1,586,534 209,218
Turkish Türkçe tr 231.32 269,472 17,942,065 1,424,167
Tatar Татарча tt 23.75 69,014 2,147,119 161,159
Ukrainian Українська uk 37.53 632,192 18,203,314 1,875,366
Urdu اردو ur 147.82 103,966 5,006,545 505,696
Uzbek O‘zbek uz 61.07 128,580 2,637,894 612,964
Venetian Vèneto vec 77.61 10,744 597,373 32,985
Vietnamese Tiếng Việt vi 23.58 1,145,235 23,681,224 3,184,530
Volapük Volapük vo 15.24 120,346 3,309,966 249,259
Walloon Walon wa 22.66 14,054 327,375 36,347
Waray-Waray Winaray war 3.58 1,259,606 6,281,500 2,870,160
Yiddish ייִדיש yi 47.1 13,172 525,231 37,246
Yoruba Yorùbá yo 5.29 31,191 550,806 53,558
Chinese 中文 zh 164.16 876,112 41,207,782 4,644,661
Min Nan Bân-lâm-gú zh-min-nan 13.28 137,296 1,112,299 458,529
Cantonese 粵語 zh-yue 26.33 45,046 1,047,795 124,823


Trends[edit]

Trend of article depth.

The table shows how the depth of the largest 30 languages[2] of Wikipedia has developed over time.

Date en de fr pl ja it nl pt es ru sv zh no fi ca uk tr ro vo cs hu eo sk da id he ar ko lt sr
Today 927 102 208 22 74 119 12 135 186 135 6 164 37 45 31 38 231 81 15 39 57 17 19 66 102 251 232 94 21 65
1 July 2015 888 97 205 21 71 109 11 130 190 125 12 147 34 46 31 36 229 77 15 42 76 17 18 70 76 253 214 87 31 66
1 Jan 2015 887 89 193 20 69 105 9 123 176 115 11 131 32 44 31 37 210 97 15 39 97 18 19 70 65 257 214 87 31 66
1 July 2014 868 90 181 18 68 101 9 121 174 113 11 114 26 45 30 27 211 94 16 39 99 18 18 69 60 256 237 80 31 63
1 Jan 2014 824 90 172 18 66 98 10 117 172 109 11 108 28 45 27 38 214 90 15 39 100 18 18 67 56 253 248 82 31 57
1 July 2013 769 89 164 19 64 95 9 112 170 106 15 100 28 45 26 38 212 88 15 39 100 18 18 66 112 249 235 82 18 64
1 Jan 2013 731 89 165 17 61 91 18 103 175 104 38 108 28 44 24 38 214 81 15 38 99 18 15 62 88 242 243 77 17 57
1 July 2012 688 88 157 16 58 89 19 96 166 99 44 148 28 44 22 36 207 101 13 38 98 17 15 58 89 236 241 76 16 52
1 Jan 2012 648 89 151 14 56 85 18 88 158 92 50 90 29 44 20 35 207 97 12 37 92 16 24 39 72 231 230 74 17 51
1 July 2011 613 89 145 13 54 81 30 82 163 91 48 83 27 43 18 34 192 93 12 37 90 16 22 36 63 227 225 71 17 47
1 Jan 2011 572 87 140 10 51 77 29 71 179 90 46 80 25 41 17 33 185 86 11 34 86 16 20 35 61 220 208 62 17 40
1 July 2010 522 88 139 11 49 75 30 77 189 91 35 68 24 39 18 31 177 73 10 32 81 15 19 34 61 208 197 51 19 47
1 Jan 2010 478 86 128 10 46 71 27 74 141 87 31 63 23 37 17 25 159 54 9 33 71 14 16 31 42 205 167 43 19 46
1 July 2009 440 84 121 10 43 66 25 71 116 81 28 63 22 35 17 26 132 36 8 32 70 13 14 28 35 184 142 39 17 56
1 Jan 2009 413 81 115 9 41 57 23 66 94 74 24 71 20 32 17 15 95 30 8 28 64 13 10 26 30 177 117 36 15 52
1 July 2008 368 77 101 8 38 47 21 58 69 63 19 56 20 30 15 10 66 25 8 26 51 12 8 24 24 159 108 34 14 46
1 Jan 2008 302 70 79 9 33 43 20 49 51 56 15 59 18 27 14 12 43 17 3 24 39 11 7 21 20 132 107 27 12 35
1 July 2007 320 100 59 15 36 59 23 31 39 32
1 Jan 2007 224 87 45 12 32 37 19 25 34 24

See also[edit]

Lists of Wikipedias by various criteria: edit

Notes[edit]

  1. List of Wikipedias
  2. At November 2008.