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 914 = 21.13 × 43.27 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 1403 = 214.61 × 6.54.

The smallest depth has Chechen Wikipedia which has the depth 0.136 = 7.37 × 0.018.

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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132
Language Language (local) Wiki Depth Articles Edits Total Pages







Afrikaans Afrikaans af 32.52 38,599 1,473,572 94,276
Alemannic Alemannisch als 23.82 20,704 685,259 47,236
Amharic አማርኛ am 41.31 13,023 343,926 42,421
Aragonese Aragonés an 80.47 31,170 1,620,171 100,973
Arabic العربية ar 225.05 407,779 20,936,037 2,537,483
Egyptian Arabic مصرى arz 325.61 14,702 755,709 120,744
Asturian Asturianu ast 4.24 45,706 1,029,233 70,300
Azerbaijani Azərbaycanca az 34.6 102,793 3,700,998 264,319
Bashkir Башҡорт ba 15.36 35,467 564,801 91,365
Bavarian Boarisch bar 90.63 17,267 581,046 77,175
Samogitian Žemaitėška bat-smg 7.2 14,660 348,797 25,238
Belarusian Беларуская be 18.89 112,071 2,338,383 280,899
Belarusian (Taraškievica) Беларуская (тарашкевіца) be-tarask 32 58,098 1,906,712 150,398
Bulgarian Български bg 23.71 212,946 7,517,391 473,057
Bengali বাংলা bn 449.65 40,928 2,093,751 437,775
Bishnupriya Manipuri বিষ্ণুপ্রিয়া মণিপুরী bpy 23.56 25,061 805,079 57,593
Breton Brezhoneg br 15.8 57,083 1,765,213 114,990
Bosnian Bosanski bs 135.37 68,108 2,906,991 338,517
Buginese Basa Ugi bug 0.95 14,104 198,122 18,277
Catalan Català ca 30.85 495,381 16,773,128 1,245,025
Chechen Нохчийн ce 0.14 118,828 995,236 134,965
Cebuano Sinugboanong Binisaya ceb 1.94 1,971,165 7,597,368 3,949,721
Sorani کوردی ckb 126.53 16,635 506,683 99,598
Czech Čeština cs 40.7 344,772 13,695,929 912,544
Chuvash Чăваш cv 4 34,052 579,280 55,033
Welsh Cymraeg cy 54.39 69,316 5,303,858 157,367
Danish Dansk da 67.91 214,145 8,783,021 719,107
German Deutsch de 101.36 1,906,192 156,272,430 5,509,766
Greek Ελληνικά el 70.95 114,246 5,788,903 351,310
English English en 914.48 5,074,551 812,675,417 38,456,510
Esperanto Esperanto eo 16.92 225,643 5,957,211 492,481
Spanish Español es 197.79 1,232,935 94,299,125 5,371,335
Estonian Eesti et 29.87 143,497 4,488,711 368,051
Basque Euskara eu 20.94 241,075 5,389,617 613,226
Persian فارسی fa 208.68 482,969 21,323,768 3,175,238
Finnish Suomi fi 45.61 388,235 16,346,518 1,054,067
Faroese Føroyskt fo 39.3 11,756 347,101 35,237
French Français fr 206.49 1,722,367 125,421,144 7,955,839
West Frisian Frysk fy 21.06 33,366 799,612 82,574
Irish Gaeilge ga 5.5 36,804 814,098 60,286
Scottish Gaelic Gàidhlig gd 22.03 13,641 525,170 28,574
Galician Galego gl 22.03 127,785 3,903,257 291,777
Gujarati ગુજરાતી gu 12.78 26,103 418,240 62,045
Hebrew עברית he 250.19 185,164 19,017,456 777,280
Hindi हिन्दी hi 113.57 101,276 3,128,903 556,417
Croatian Hrvatski hr 32.79 161,531 4,828,265 441,092
Haitian Krèyol ayisyen ht 0.37 52,471 711,473 61,885
Hungarian Magyar hu 58.19 380,760 17,841,874 1,102,897
Armenian Հայերեն hy 30.09 194,912 3,971,963 615,920
Interlingua Interlingua ia 6.86 19,028 576,305 30,490
Indonesian Bahasa Indonesia id 87.6 374,253 11,894,210 1,697,544
Ido Ido io 6.34 26,485 941,519 40,277
Icelandic Íslenska is 43.17 40,299 1,578,821 110,281
Italian Italiano it 117 1,251,898 84,017,316 4,323,770
Japanese 日本語 ja 73 1,001,402 59,520,291 2,885,064
Javanese Basa Jawa jv 19.21 48,667 972,206 125,231
Georgian ქართული ka 34.52 102,942 3,142,264 285,138
Kazakh Қазақша kk 8.8 214,104 2,492,545 497,893
Kannada ಕನ್ನಡ kn 55.09 19,587 594,163 69,204
Korean 한국어 ko 90.46 341,630 17,571,287 1,185,687
Kurdish Kurdî ku 26.86 21,662 686,282 52,804
Kirghiz Кыргызча ky 0.28 53,254 233,895 68,388
Latin Latina la 10.34 124,985 3,123,172 235,304
Luxembourgish Lëtzebuergesch lb 29.88 45,303 1,986,288 101,205
Limburgish Limburgs li 83.49 10,869 405,015 43,367
Lombard Lumbaart lmo 32.7 32,911 1,069,926 86,390
Lithuanian Lietuvių lt 21.05 175,743 5,170,697 399,997
Latvian Latviešu lv 91.73 65,535 2,550,238 269,631
Banyumasan Basa Banyumasan map-bms 8.74 12,997 207,565 26,810
Malagasy Malagasy mg 10.31 81,219 812,207 215,575
Minangkabau Bahaso Minangkabau min 0.782 221,731 1,367,582 315,993
Macedonian Македонски mk 139.74 84,978 4,260,817 388,194
Malayalam മലയാളം ml 281.95 41,626 2,344,635 285,552
Mongolian Монгол mn 44.01 15,235 477,369 46,920
Marathi मराठी mr 76.63 42,987 1,421,644 175,025
Hill Mari Кырык Мары (Kyryk Mary) mrj 1.22 10,093 97,557 14,373
Malay Bahasa Melayu ms 15.78 280,694 4,117,210 759,591
Burmese language မ္ရန္‌မာစာ my 3.12 32,060 290,971 57,171
Mazandarani مَزِروني mzn 6.41 12,220 136,027 25,657
Nahuatl Nāhuatl nah 26.07 11,239 425,550 25,203
Neapolitan Nnapulitano nap 18.07 14,284 697,362 26,009
Low Saxon Plattdüütsch nds 31.26 24,775 795,955 64,075
Nepali नेपाली ne 20.84 27,602 531,179 74,927
Newari नेवारी new 12.27 72,349 829,361 195,337
Dutch Nederlands nl 10.84 1,855,019 46,968,639 3,529,399
Norwegian (Nynorsk) Nynorsk nn 17.73 125,210 3,002,114 288,676
Norwegian (Bokmål) Norsk (Bokmål) no 36.12 431,690 15,674,984 1,127,580
Occitan Occitan oc 5.43 89,356 2,134,101 143,302
Oriya ଓଡ଼ିଆ or 65.79 10,327 234,855 48,322
Ossetian Иронау os 95.87 10,215 483,285 38,413
Punjabi ਪੰਜਾਬੀ pa 23.31 20,962 310,209 68,530
Polish Polski pl 21.86 1,153,562 44,838,190 2,401,970
Piedmontese Piemontèis pms 2.18 63,878 857,352 95,317
Western Panjabi شاہ مکھی پنجابی pnb 0.43 40,282 449,056 49,003
Portuguese Português pt 133.32 908,780 45,716,935 4,020,600
Quechua Runa Simi qu 34.6 19,453 659,073 51,413
Romanian Română ro 80.62 367,679 10,715,803 1,671,594
Russian Русский ru 132.19 1,288,164 88,582,802 4,699,383
Sanskrit संस्कृतम् sa 66.88 10,020 359,491 35,924
Sakha Саха тыла sah 50.44 10,727 344,284 35,028
Sicilian Sicilianu scn 20.15 25,354 750,026 56,625
Scots Scots sco 27.93 36,249 536,187 130,904
Serbo-Croatian Srpskohrvatski / Српскохрватски sh 407.84 430,388 20,348,142 4,532,581
Sinhalese සිංහල si 92.41 11,625 367,427 54,773
Simple English Simple English simple 172.49 117,332 12,700,576 385,964
Slovak Slovenčina sk 18.44 208,473 6,238,408 448,533
Slovenian Slovenščina sl 24.42 149,350 4,722,669 350,375
Albanian Shqip sq 35.42 52,215 1,717,162 141,385
Serbian Српски sr 67.88 331,310 11,927,119 1,195,558
Sundanese Basa Sunda su 20 18,702 486,968 43,778
Swedish Svenska sv 6.44 2,812,648 32,973,227 5,807,390
Swahili Kiswahili sw 26.85 31,849 1,010,060 77,594
Tamil தமிழ் ta 30.94 84,299 2,096,556 244,383
Telugu తెలుగు te 39.71 65,037 1,814,651 201,648
Tajik Тоҷикӣ tg 12.53 40,370 743,174 90,128
Thai ไทย th 271.56 100,224 6,646,314 593,955
Tagalog Tagalog tl 38.04 64,292 1,578,942 208,320
Turkish Türkçe tr 238.22 261,284 17,562,373 1,399,817
Tatar Татарча tt 23.4 68,420 2,132,597 158,713
Ukrainian Українська uk 37.33 617,725 17,759,929 1,828,762
Urdu اردو ur 142.75 101,734 4,913,624 482,707
Uzbek O‘zbek uz 61.18 128,111 2,623,720 612,105
Venetian Vèneto vec 77.81 10,699 596,281 32,850
Vietnamese Tiếng Việt vi 22.34 1,142,638 22,988,484 3,138,195
Volapük Volapük vo 15.24 120,267 3,307,370 249,140
Walloon Walon wa 22.66 13,998 326,301 36,188
Waray-Waray Winaray war 3.58 1,259,475 6,279,830 2,869,857
Yiddish ייִדיש yi 47.29 13,113 524,026 37,109
Yoruba Yorùbá yo 5.3 31,147 550,336 53,517
Chinese 中文 zh 162.63 862,716 40,268,630 4,568,461
Min Nan Bân-lâm-gú zh-min-nan 14.47 123,311 1,008,495 429,355
Cantonese 粵語 zh-yue 27.94 42,528 1,028,246 118,993


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 914 101 206 22 73 117 11 133 198 132 6 163 36 46 31 37 238 81 15 41 58 17 18 68 88 250 225 90 21 68
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.