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 929 = 21.08 × 44.08 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 1383 = 214.3 × 6.45.

The smallest depth has Chechen Wikipedia which has the depth 0.111 = 6.97 × 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 31.67 40,217 1,510,461 97,808
Alemannic Alemannisch als 23.53 21,295 706,107 48,313
Amharic አማርኛ am 41.15 13,084 345,236 42,550
Aragonese Aragonés an 79.8 31,420 1,624,451 101,621
Arabic العربية ar 231.95 424,999 22,544,616 2,639,902
Egyptian Arabic مصرى arz 322.9 15,184 773,351 124,783
Asturian Asturianu ast 4.25 45,891 1,034,066 70,612
Azerbaijani Azərbaycanca az 35.3 105,535 3,801,954 273,967
Bashkir Башҡорт ba 19.04 35,975 615,083 98,934
Bavarian Boarisch bar 91.23 17,872 598,659 80,449
Samogitian Žemaitėška bat-smg 6.35 15,641 351,953 26,442
Belarusian Беларуская be 19.98 115,604 2,399,158 297,579
Belarusian (Taraškievica) Беларуская (тарашкевіца) be-tarask 31.98 59,003 1,924,162 153,143
Bulgarian Български bg 24 217,286 7,678,409 484,731
Bengali বাংলা bn 448.62 42,436 2,172,148 452,819
Bishnupriya Manipuri বিষ্ণুপ্রিয়া মণিপুরী bpy 23.53 25,062 805,323 57,563
Breton Brezhoneg br 15.29 58,480 1,781,717 117,096
Bosnian Bosanski bs 131.8 69,697 2,939,777 343,026
Buginese Basa Ugi bug 0.95 14,106 198,216 18,281
Catalan Català ca 31 508,971 17,383,589 1,277,121
Chechen Нохчийн ce 0.11 133,661 1,049,112 150,494
Cebuano Sinugboanong Binisaya ceb 1.51 2,406,677 8,967,391 4,505,553
Sorani کوردی ckb 124.48 16,995 514,109 101,068
Czech Čeština cs 39.47 354,710 13,708,757 937,429
Chuvash Чăваш cv 4.16 34,222 583,754 55,815
Welsh Cymraeg cy 54.83 69,800 5,338,601 158,996
Danish Dansk da 66.04 216,276 8,564,647 729,097
German Deutsch de 102.16 1,943,349 159,683,459 5,632,246
Greek Ελληνικά el 71.87 118,442 5,982,394 367,207
English English en 929.42 5,160,230 831,128,665 39,422,194
Esperanto Esperanto eo 16.86 229,031 6,013,096 500,326
Spanish Español es 186.39 1,259,658 90,934,920 5,482,286
Estonian Eesti et 29.37 146,333 4,550,790 373,538
Basque Euskara eu 20.85 246,933 5,589,562 623,564
Persian فارسی fa 211.56 492,958 21,930,079 3,255,619
Finnish Suomi fi 45.38 394,405 16,569,301 1,069,362
Faroese Føroyskt fo 38.24 12,019 350,277 35,771
French Français fr 209.22 1,759,282 128,829,189 8,166,022
West Frisian Frysk fy 21.49 33,840 816,947 84,210
Irish Gaeilge ga 5.47 37,599 825,448 61,632
Scottish Gaelic Gàidhlig gd 21.54 13,899 529,248 28,998
Galician Galego gl 22.99 130,519 4,041,922 301,396
Gujarati ગુજરાતી gu 13.51 26,327 424,149 63,879
Hebrew עברית he 251.29 189,907 19,585,050 797,317
Hindi हिन्दी hi 114.64 103,786 3,190,665 575,898
Croatian Hrvatski hr 31.77 165,224 4,882,713 446,976
Upper Sorbian Hornjoserbsce hsb 31.43 10,645 348,055 27,384
Haitian Krèyol ayisyen ht 0.41 52,388 713,103 62,315
Hungarian Magyar hu 57.15 388,458 18,192,640 1,115,709
Armenian Հայերեն hy 33.44 199,286 4,240,610 650,759
Interlingua Interlingua ia 6.72 19,199 553,333 30,970
Indonesian Bahasa Indonesia id 102.88 380,210 12,584,966 1,864,620
Ido Ido io 5.85 26,613 894,973 40,265
Icelandic Íslenska is 42.87 40,768 1,589,790 111,438
Italian Italiano it 119.64 1,273,881 86,336,262 4,430,277
Japanese 日本語 ja 74.14 1,016,812 60,839,300 2,942,126
Javanese Basa Jawa jv 21.57 48,838 1,080,860 126,395
Georgian ქართული ka 35.16 104,479 3,199,729 291,459
Kazakh Қазақша kk 8.77 216,055 2,542,695 499,753
Kannada ಕನ್ನಡ kn 51.63 20,458 611,284 70,317
Korean 한국어 ko 94.96 348,814 18,288,724 1,230,511
Kurdish Kurdî ku 26.86 22,001 691,076 53,826
Kirghiz Кыргызча ky 0.27 55,382 239,244 71,115
Latin Latina la 10.68 125,565 3,164,047 238,126
Luxembourgish Lëtzebuergesch lb 29.99 45,767 2,011,833 102,280
Limburgish Limburgs li 88.2 11,177 410,931 46,478
Lombard Lumbaart lmo 31.74 34,068 1,083,447 89,111
Lithuanian Lietuvių lt 21.38 177,309 5,216,547 406,036
Latvian Latviešu lv 87.56 68,725 2,595,696 279,897
Banyumasan Basa Banyumasan map-bms 8.67 13,006 208,324 26,719
Malagasy Malagasy mg 10.09 82,695 828,005 217,272
Minangkabau Bahaso Minangkabau min 0.785 221,819 1,371,512 316,216
Macedonian Македонски mk 138.92 85,863 4,285,661 391,885
Malayalam മലയാളം ml 278.34 42,996 2,391,670 294,869
Mongolian Монгол mn 46.79 15,454 489,938 48,827
Marathi मराठी mr 76.64 43,533 1,438,501 177,346
Hill Mari Кырык Мары (Kyryk Mary) mrj 1.13 10,095 91,511 14,340
Malay Bahasa Melayu ms 15.8 283,460 4,167,001 766,774
Burmese language မ္ရန္‌မာစာ my 3.73 32,754 321,285 60,132
Mazandarani مَزِروني mzn 6.44 12,232 136,456 25,703
Nahuatl Nāhuatl nah 26.22 11,360 430,631 25,521
Neapolitan Nnapulitano nap 18.06 14,299 697,853 26,036
Low Saxon Plattdüütsch nds 31.37 25,226 801,604 65,665
Nepali नेपाली ne 20.66 28,319 549,487 76,278
Newari नेवारी new 12.27 72,367 829,654 195,392
Dutch Nederlands nl 11.59 1,869,959 47,822,135 3,622,323
Norwegian (Nynorsk) Nynorsk nn 16.77 126,681 2,872,054 292,116
Norwegian (Bokmål) Norsk (Bokmål) no 37.01 439,104 16,326,195 1,147,281
Occitan Occitan oc 5.55 89,500 2,156,470 143,954
Oriya ଓଡ଼ିଆ or 66.27 10,612 242,835 49,692
Ossetian Иронау os 96.37 10,246 483,855 38,688
Punjabi ਪੰਜਾਬੀ pa 23.88 22,091 328,380 72,991
Polish Polski pl 22.23 1,169,261 45,750,439 2,443,068
Piedmontese Piemontèis pms 2.25 63,923 859,305 95,938
Western Panjabi شاہ مکھی پنجابی pnb 0.56 41,759 459,002 52,335
Portuguese Português pt 135.53 921,901 46,699,659 4,103,269
Quechua Runa Simi qu 34.25 19,580 659,847 51,632
Romanian Română ro 81.21 369,920 10,868,058 1,680,908
Russian Русский ru 135.83 1,312,827 90,887,981 4,845,771
Sanskrit संस्कृतम् sa 101.26 9,965 390,334 43,403
Sakha Саха тыла sah 51.65 10,789 346,721 35,652
Sicilian Sicilianu scn 20.23 25,372 751,009 56,743
Scots Scots sco 27.24 38,024 548,821 137,270
Serbo-Croatian Srpskohrvatski / Српскохрватски sh 540.72 432,989 27,259,260 4,543,570
Sinhalese සිංහල si 93.31 11,809 373,649 55,951
Simple English Simple English simple 173.75 119,047 12,789,932 394,716
Slovak Slovenčina sk 18.41 211,491 6,308,651 455,296
Slovenian Slovenščina sl 24.67 150,820 4,800,677 354,313
Albanian Shqip sq 35.11 55,480 1,767,911 151,809
Serbian Српски sr 65.39 335,572 12,220,726 1,178,139
Sundanese Basa Sunda su 20.69 19,033 492,058 45,304
Swedish Svenska sv 5.61 3,171,275 34,970,570 6,377,856
Swahili Kiswahili sw 24.65 33,406 1,017,549 79,876
Tamil தமிழ் ta 31.6 86,147 2,145,090 252,212
Telugu తెలుగు te 39.97 66,209 1,868,431 204,788
Tajik Тоҷикӣ tg 13.2 46,282 784,762 108,941
Thai ไทย th 255.34 103,095 6,826,487 585,587
Tagalog Tagalog tl 37.77 64,776 1,588,306 209,287
Turkish Türkçe tr 227.96 272,491 18,058,855 1,430,379
Tatar Татарча tt 23.97 69,095 2,152,056 161,875
Ukrainian Українська uk 37.82 636,164 18,382,754 1,891,037
Urdu اردو ur 150.32 104,562 5,033,728 514,352
Uzbek O‘zbek uz 61.18 128,593 2,640,003 613,427
Venetian Vèneto vec 77.58 10,752 597,547 33,011
Vietnamese Tiếng Việt vi 23.8 1,145,851 23,802,588 3,193,405
Volapük Volapük vo 15.23 120,355 3,310,042 249,269
Walloon Walon wa 22.58 14,095 327,734 36,425
Waray-Waray Winaray war 3.58 1,259,630 6,282,385 2,870,158
Yiddish ייִדיש yi 46.88 13,220 525,849 37,341
Yoruba Yorùbá yo 5.31 31,213 551,163 53,651
Chinese 中文 zh 164.95 880,913 41,528,275 4,678,272
Min Nan Bân-lâm-gú zh-min-nan 13.55 137,672 1,138,818 459,642
Cantonese 粵語 zh-yue 25.67 45,913 1,053,143 126,540


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 929 102 209 22 74 120 12 136 186 136 6 165 37 45 31 38 228 81 15 39 57 17 18 66 103 251 232 95 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.