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 885 = 21.26 × 41.61 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 1424 = 215.71 × 6.6.

The smallest depth has Minangkabau Wikipedia which has the depth 0.0056 = 4.03 × 0.0014.

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.: Table sorted by Depth on 1 May 2015.

No. Language Language (local) Wiki Depth Articles Edits Total
1 English English en 884.65 4,875,587 772,330,798 36,325,101
2 Bengali বাংলা bn 490.1 35,600 1,912,462 392,753
3 Macedonian Македонски mk 136.62 81,996 4,145,256 367,283
4 Malayalam മലയാളം ml 284.51 38,989 2,228,017 266,387
5 Serbo-Croatian Srpskohrvatski / Српскохрватски sh 351.19 396,253 14,898,651 4,458,495
6 Thai ไทย th 265.77 95,047 6,309,634 554,315
7 Egyptian Arabic مصرى arz 257.73 13,956 680,503 99,724
8 Hebrew עברית he 252.24 172,610 17,889,500 724,174
9 Turkish Türkçe tr 228.12 246,752 16,483,613 1,288,900
10 Arabic العربية ar 208.16 371,239 18,613,721 2,221,667
11 Persian فارسی fa 214.38 451,865 20,080,930 3,015,785
12 French Français fr 203.85 1,625,678 117,477,333 7,484,058
13 Spanish Español es 187.94 1,180,335 87,927,158 5,063,458
14 Urdu اردو ur 170.5 70,167 4,281,968 321,044
15 Simple English Simple English simple 172.43 112,987 12,513,568 367,111
16 Bosnian Bosanski bs 163.01 60,717 2,802,342 324,513
17 Chinese 中文 zh 147.49 820,501 37,070,208 4,157,518
18 Sorani کوردی ckb 137.8 15,436 489,776 95,411
19 Portuguese Português pt 129.08 874,739 43,376,627 3,826,518
20 Russian Русский ru 121.85 1,223,028 83,206,921 4,287,682
21 Italian Italiano it 108.48 1,199,865 78,150,103 4,041,964
22 German Deutsch de 97.71 1,817,069 147,722,688 5,180,787
23 Ossetian Иронау os 94.08 10,157 481,432 37,740
24 Latvian Latviešu lv 93.12 60,961 2,416,746 250,263
25 Hindi हिन्दी hi 92.55 102,254 2,884,341 519,885
26 Hungarian Magyar hu 85.12 306,794 16,697,449 999,221
27 Korean 한국어 ko 86.74 315,253 15,962,992 1,078,380
28 Sinhalese සිංහල si 84.31 11,230 343,812 50,910
29 Aragonese Aragonés an 81.75 30,606 1,606,738 99,452
30 Venetian Vèneto vec 78.08 10,554 588,273 32,461
31 Bavarian Boarisch bar 74.58 10,932 457,304 38,229
32 Romanian Română ro 75.77 317,990 9,802,833 1,342,184
33 Indonesian Bahasa Indonesia id 74.92 359,477 10,386,606 1,568,629
34 Danish Dansk da 72.64 199,491 8,480,230 681,452
35 Marathi मराठी mr 71.78 41,852 1,379,433 164,177
36 Japanese 日本語 ja 70.3 967,573 56,604,351 2,758,446
37 Greek Ελληνικά el 67.27 106,870 5,378,543 321,009
38 Serbian Српски sr 66.29 319,989 11,329,806 1,150,057
39 Welsh Cymraeg cy 64.09 63,664 5,271,441 149,495
40 Uzbek O‘zbek uz 59.78 127,814 2,342,725 647,257
41 Kannada ಕನ್ನಡ kn 66.38 16,118 526,686 60,698
42 Sakha Саха тыла sah 50.62 10,350 339,273 33,483
43 Yiddish ייִדיש yi 48.68 12,668 516,684 35,998
44 Sanskrit संस्कृतम् sa 47.2 9,937 298,868 32,422
45 Finnish Suomi fi 46.24 372,168 15,792,779 1,013,186
46 Icelandic Íslenska is 43.98 39,377 1,560,642 108,103
47 Czech Čeština cs 41.61 322,234 12,975,109 856,176
48 Amharic አማርኛ am 41.22 12,946 341,312 42,156
49 Mongolian Монгол mn 41.08 14,413 454,232 42,752
50 Tamil தமிழ் ta 40.67 66,668 1,936,289 205,021
51 Tagalog Tagalog tl 37.91 63,301 1,545,650 205,370
52 Ukrainian Українська uk 37.26 570,454 16,413,972 1,686,612
53 Georgian ქართული ka 36.45 94,847 3,016,900 264,365
54 Afrikaans Afrikaans af 35.17 35,390 1,410,832 87,725
55 Quechua Runa Simi qu 34.89 19,319 656,716 51,174
56 Croatian Hrvatski hr 34.66 153,985 4,694,993 427,546
57 Telugu తెలుగు te 35.78 60,148 1,504,435 186,992
58 Albanian Shqip sq 34.89 50,502 1,675,027 135,276
59 Azerbaijani Azərbaycanca az 33.9 96,012 3,478,424 244,041
60 Norwegian (Bokmål) Norsk (Bokmål) no 33.72 411,697 13,938,119 1,075,917
61 Lombard Lumbaart lmo 32.37 31,835 1,053,347 82,532
62 Cantonese 粵語 zh-yue 31.93 36,657 971,004 104,657
63 Swahili Kiswahili sw 31.99 28,822 992,427 73,051
64 Belarusian (Taraškievica) Беларуская (тарашкевіца) be-x-old 31.79 56,458 1,862,995 145,388
65 Armenian Հայերեն hy 30.14 164,760 3,164,587 537,554
66 Estonian Eesti et 30.98 134,789 4,320,423 347,565
67 Catalan Català ca 30.94 462,256 15,647,218 1,163,305
68 Low Saxon Plattdüütsch nds 30.71 23,154 776,871 58,306
69 Luxembourgish Lëtzebuergesch lb 30.1 43,634 1,912,355 97,758
70 Min Nan Bân-lâm-gú zh-min-nan 29.46 13,346 470,942 32,322
71 Faroese Føroyskt fo 32.4 11,164 324,057 30,732
72 Kurdish Kurdî ku 26.76 21,029 670,430 51,044
73 Alemannic Alemannisch als 26.29 18,931 647,514 44,328
74 Basque Euskara eu 26.26 207,677 5,051,806 562,953
75 Neapolitan Nnapulitano nap 24.35 14,282 691,375 28,622
76 Slovenian Slovenščina sl 24.14 146,069 4,618,388 341,138
77 Bulgarian Български bg 24.1 192,132 7,073,390 422,689
78 Scottish Gaelic Gàidhlig gd 23.66 12,918 512,484 27,462
79 Bishnupriya Manipuri বিষ্ণুপ্রিয়া মণিপুরী bpy 23.54 25,057 804,273 57,584
80 Walloon Walon wa 22.71 13,736 321,435 35,483
81 Tatar Татарча tt 22.51 66,833 2,100,916 152,183
82 Punjabi ਪੰਜਾਬੀ pa 22.35 16,935 240,687 55,318
83 Belarusian Беларуская be 21.21 83,516 2,065,553 204,555
84 Polish Polski pl 21.28 1,113,103 42,698,090 2,306,672
85 Galician Galego gl 20.7 122,501 3,653,775 275,536
86 West Frisian Frysk fy 20.37 31,916 783,170 77,118
87 Sicilian Sicilianu scn 20.3 25,144 746,131 56,244
88 Nepali नेपाली ne 20.32 25,872 476,414 70,845
89 Vietnamese Tiếng Việt vi 19.8 1,133,230 21,150,079 3,047,148
90 Lithuanian Lietuvių lt 19.75 172,059 4,951,252 385,416
91 Nahuatl Nāhuatl nah 18.79 10,475 404,599 20,759
92 Asturian Asturianu ast 18.37 20,308 796,739 39,746
93 Norwegian (Nynorsk) Nynorsk nn 18.15 120,660 2,928,303 279,432
94 Slovak Slovenčina sk 18.07 204,552 6,074,991 438,076
95 Scots Scots sco 17.12 31,571 472,198 87,934
96 Javanese Basa Jawa jv 17.78 48,430 951,274 121,378
97 Esperanto Esperanto eo 17.11 215,199 5,755,567 469,391
98 Breton Brezhoneg br 16.91 53,919 1,724,531 109,887
99 Sundanese Basa Sunda su 16.25 17,982 467,258 38,899
100 Malay Bahasa Melayu ms 15.51 273,792 3,991,117 737,261
101 Volapük Volapük vo 15.25 120,187 3,304,889 249,003
102 Newari नेवारी new 12.24 72,361 828,445 195,289
103 Interlingua Interlingua ia 12.07 14,427 553,860 25,096
104 Swedish Svenska sv 11.58 1,965,933 29,891,399 4,586,594
105 Bashkir Башҡорт ba 11.9 34,600 510,673 82,601
106 Dutch Nederlands nl 10.8 1,821,882 45,167,711 3,485,042
107 Malagasy Malagasy mg 10.74 79,299 806,163 212,859
108 Latin Latina Latina 10.5 116,765 2,985,948 219,297
109 Gujarati ગુજરાતી gu 10.15 25,504 391,437 56,332
110 Kazakh Қазақша kk 8.87 211,629 2,398,501 499,241
111 Tajik Тоҷикӣ tg 11.28 31,761 643,585 65,888
112 Banyumasan Basa Banyumasan map-bms 8.29 12,930 205,341 26,238
113 Samogitian Žemaitėška bat-smg 7.04 13,877 339,315 23,583
114 Irish Gaeilge ga 5.91 34,497 789,431 57,030
115 Ido Ido io 6.02 25,921 931,060 38,919
116 Mazandarani مَزِروني mzn 5.81 12,029 131,699 24,550
117 Occitan Occitan oc 5.51 88,281 2,104,583 142,123
118 Yoruba Yorùbá yo 5.32 31,044 547,444 53,404
119 Chuvash Чăваш cv 4.03 32,458 564,995 52,280
120 Waray-Waray Winaray war 3.57 1,259,081 6,261,327 2,868,677
121 Cebuano Sinugboanong Binisaya ceb 3.53 1,211,246 5,775,389 2,793,266
122 Burmese language မ္ရန္‌မာစာ my 2.18 31,222 239,082 52,877
123 Piedmontese Piemontèis pms 2.07 63,771 852,679 94,289
124 Kirghiz Кыргызча ky 1.04 29,377 198,495 43,402
125 Buginese Basa Ugi bug 0.94 14,103 197,544 18,271
126 Western Panjabi شاہ مکھی پنجابی pnb 0.46 33,845 420,852 41,030
127 Haitian Krèyol ayisyen ht 0.36 52,448 709,322 61,678
128 Chechen Нохчийн ce 0.18 88,695 657,178 103,520
129 Minangkabau Bahaso Minangkabau min 0.006 221,603 925,876 229,831
No. Language Language (local) Wiki Depth Articles Edits Total


Trends[edit]

Trend during 2008.

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 885 98 204 21 70 108 11 129 188 122 12 147 34 46 31 37 228 76 15 42 85 17 18 73 75 252 208 87 20 66
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.