# 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

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 × 41.63 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

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

The table shows the list of Wikipedias with over 10,000 articles sorted by Depth.

N.B.: Table sorted by Depth on 1 May 2015.

No. Language Language (local) Wiki Depth Articles Edits Total
1 English English en 885.08 4,878,627 772,985,473 36,354,939
2 Bengali বাংলা bn 490.05 35,650 1,914,676 393,357
3 Macedonian Македонски mk 136.52 82,061 4,147,027 367,481
4 Malayalam മലയാളം ml 284.73 39,007 2,229,257 266,644
5 Serbo-Croatian Srpskohrvatski / Српскохрватски sh 354.43 396,383 15,045,414 4,458,861
6 Thai ไทย th 265.8 95,168 6,315,313 555,221
7 Egyptian Arabic مصرى arz 257.57 13,981 682,545 99,767
8 Hebrew עברית he 252.3 172,782 17,908,096 724,980
9 Turkish Türkçe tr 228.16 246,886 16,494,921 1,289,625
10 Arabic العربية ar 208.36 371,719 18,641,558 2,225,764
11 Persian فارسی fa 214.44 452,139 20,095,050 3,018,035
12 French Français fr 204.21 1,627,096 117,617,095 7,497,579
13 Spanish Español es 188.03 1,181,026 88,023,112 5,066,237
14 Urdu اردو ur 170.41 70,469 4,303,298 322,168
15 Simple English Simple English simple 172.32 113,076 12,516,183 367,390
16 Bosnian Bosanski bs 163.03 60,749 2,804,127 324,687
17 Chinese 中文 zh 147.59 820,974 37,110,919 4,160,420
18 Sorani کوردی ckb 137.68 15,445 489,859 95,436
19 Portuguese Português pt 129.23 875,100 43,415,140 3,829,650
20 Russian Русский ru 121.84 1,224,249 83,297,373 4,291,477
21 Italian Italiano it 108.57 1,200,626 78,222,450 4,045,738
22 German Deutsch de 97.69 1,818,611 147,865,072 5,184,448
23 Ossetian Иронау os 94.06 10,161 481,481 37,758
24 Latvian Latviešu lv 93.12 61,029 2,418,386 250,609
25 Hindi हिन्दी hi 92.8 102,300 2,889,937 520,567
26 Hungarian Magyar hu 84.78 307,591 16,719,946 1,000,366
27 Korean 한국어 ko 86.76 315,686 15,988,142 1,079,879
28 Sinhalese සිංහල si 84.4 11,237 344,016 50,977
29 Aragonese Aragonés an 81.76 30,607 1,606,936 99,456
30 Venetian Vèneto vec 78.03 10,557 588,299 32,464
31 Bavarian Boarisch bar 73.82 11,002 457,716 38,371
32 Romanian Română ro 75.76 319,411 9,815,920 1,350,693
33 Indonesian Bahasa Indonesia id 75.17 359,648 10,417,141 1,570,261
34 Danish Dansk da 72.65 199,582 8,484,890 681,781
35 Marathi मराठी mr 71.78 41,873 1,380,265 164,251
36 Japanese 日本語 ja 70.33 968,204 56,654,211 2,760,538
37 Greek Ελληνικά el 67.34 106,993 5,386,211 321,495
38 Serbian Српски sr 66.27 320,231 11,336,766 1,150,800
39 Welsh Cymraeg cy 64.07 63,690 5,271,851 149,560
40 Uzbek O‘zbek uz 59.79 127,818 2,342,942 647,294
41 Kannada ಕನ್ನಡ kn 66.59 16,097 527,072 60,660
42 Sakha Саха тыла sah 50.62 10,355 339,338 33,506
43 Yiddish ייִדיש yi 48.69 12,671 516,784 36,011
44 Sanskrit संस्कृतम् sa 47.19 9,940 298,956 32,431
45 Finnish Suomi fi 46.23 372,430 15,803,316 1,013,838
46 Icelandic Íslenska is 43.99 39,388 1,560,968 108,155
47 Czech Čeština cs 41.58 322,635 12,986,287 857,133
48 Amharic አማርኛ am 41.22 12,946 341,330 42,157
49 Mongolian Монгол mn 41.12 14,426 454,634 42,815
50 Tamil தமிழ் ta 40.67 66,712 1,937,445 205,155
51 Tagalog Tagalog tl 37.91 63,309 1,545,867 205,391
52 Ukrainian Українська uk 36.86 571,205 16,443,286 1,679,482
53 Georgian ქართული ka 36.34 95,042 3,018,947 264,697
54 Afrikaans Afrikaans af 35.15 35,416 1,411,457 87,781
55 Quechua Runa Simi qu 34.88 19,321 656,733 51,177
56 Croatian Hrvatski hr 34.65 154,064 4,697,506 427,735
57 Telugu తెలుగు te 35.94 60,163 1,510,144 187,136
58 Albanian Shqip sq 34.93 50,512 1,675,608 135,368
59 Azerbaijani Azərbaycanca az 33.8 96,190 3,481,145 244,301
60 Norwegian (Bokmål) Norsk (Bokmål) no 33.67 412,288 13,947,468 1,077,079
61 Lombard Lumbaart lmo 32.37 31,842 1,053,416 82,562
62 Cantonese 粵語 zh-yue 31.88 36,708 971,614 104,767
63 Swahili Kiswahili sw 32.02 28,834 992,634 73,117
64 Belarusian (Taraškievica) Беларуская (тарашкевіца) be-x-old 31.81 56,477 1,863,904 145,456
65 Armenian Հայերեն hy 29.85 165,731 3,171,508 539,044
66 Estonian Eesti et 30.95 134,904 4,322,580 347,811
67 Catalan Català ca 30.95 462,607 15,658,628 1,164,378
68 Low Saxon Plattdüütsch nds 30.74 23,181 777,197 58,414
69 Luxembourgish Lëtzebuergesch lb 30.06 43,663 1,912,741 97,798
70 Min Nan Bân-lâm-gú zh-min-nan 29.54 13,348 472,433 32,325
71 Faroese Føroyskt fo 33.2 11,174 324,870 31,090
72 Kurdish Kurdî ku 26.73 21,056 670,741 51,102
73 Alemannic Alemannisch als 26.17 18,975 647,853 44,383
74 Basque Euskara eu 26.27 207,749 5,053,147 563,233
75 Neapolitan Nnapulitano nap 24.35 14,283 691,394 28,625
76 Slovenian Slovenščina sl 24.15 146,120 4,620,289 341,302
77 Bulgarian Български bg 24.11 192,277 7,080,282 423,067
78 Scottish Gaelic Gàidhlig gd 23.64 12,924 512,552 27,470
79 Bishnupriya Manipuri বিষ্ণুপ্রিয়া মণিপুরী bpy 23.54 25,058 804,279 57,587
80 Walloon Walon wa 22.71 13,739 321,461 35,495
81 Tatar Татарча tt 22.55 66,852 2,102,828 152,270
82 Punjabi ਪੰਜਾਬੀ pa 23.37 16,976 251,880 55,499
83 Belarusian Беларуская be 21.19 83,649 2,068,250 204,811
84 Polish Polski pl 21.3 1,113,760 42,731,025 2,308,597
85 Galician Galego gl 20.72 122,587 3,657,309 275,818
86 West Frisian Frysk fy 20.38 31,961 783,478 77,280
87 Sicilian Sicilianu scn 20.3 25,144 746,166 56,252
88 Nepali नेपाली ne 20.38 25,883 477,318 70,922
89 Vietnamese Tiếng Việt vi 19.81 1,133,319 21,158,335 3,047,869
90 Lithuanian Lietuvių lt 19.77 172,108 4,952,860 385,668
91 Nahuatl Nāhuatl nah 18.79 10,477 404,659 20,766
92 Asturian Asturianu ast 18.4 20,325 797,583 39,803
93 Norwegian (Nynorsk) Nynorsk nn 18.18 120,690 2,933,120 279,557
94 Slovak Slovenčina sk 18.08 204,669 6,077,794 438,415
95 Scots Scots sco 17.12 31,585 472,410 87,986
96 Javanese Basa Jawa jv 17.78 48,433 951,349 121,387
97 Esperanto Esperanto eo 17.1 215,320 5,757,579 469,590
98 Breton Brezhoneg br 16.9 53,950 1,725,035 109,942
99 Sundanese Basa Sunda su 16.26 17,985 467,305 38,913
100 Malay Bahasa Melayu ms 15.52 273,827 3,992,495 737,549
101 Volapük Volapük vo 15.24 120,200 3,304,915 249,016
102 Newari नेवारी new 12.25 72,364 828,541 195,334
103 Interlingua Interlingua ia 12.11 14,429 554,014 25,122
104 Swedish Svenska sv 11.58 1,966,326 29,905,683 4,587,655
105 Bashkir Башҡорт ba 12.05 34,671 512,184 83,163
106 Dutch Nederlands nl 10.8 1,822,402 45,198,465 3,485,686
107 Malagasy Malagasy mg 10.74 79,312 806,270 212,886
108 Latin Latina Latina 10.48 116,944 2,987,399 219,551
109 Gujarati ગુજરાતી gu 10.18 25,521 391,871 56,413
110 Kazakh Қазақша kk 8.88 211,705 2,400,510 499,540
111 Tajik Тоҷикӣ tg 12.26 31,810 649,781 67,793
112 Banyumasan Basa Banyumasan map-bms 8.29 12,930 205,343 26,239
113 Samogitian Žemaitėška bat-smg 7.02 13,897 339,376 23,610
114 Irish Gaeilge ga 5.89 34,586 789,994 57,169
115 Ido Ido io 6.01 25,940 931,238 38,951
116 Mazandarani مَزِروني mzn 5.83 12,030 131,968 24,558
117 Occitan Occitan oc 5.51 88,294 2,104,795 142,146
118 Yoruba Yorùbá yo 5.32 31,048 547,569 53,408
119 Chuvash Чăваш cv 4.04 32,461 565,687 52,292
120 Waray-Waray Winaray war 3.57 1,259,089 6,261,405 2,868,698
121 Cebuano Sinugboanong Binisaya ceb 3.53 1,211,248 5,775,437 2,793,277
122 Burmese language မ္ရန္‌မာစာ my 2.18 31,224 239,194 52,909
123 Piedmontese Piemontèis pms 2.07 63,773 852,725 94,314
124 Kirghiz Кыргызча ky 1.04 29,377 198,554 43,403
125 Buginese Basa Ugi bug 0.95 14,103 197,552 18,273
126 Western Panjabi شاہ مکھی پنجابی pnb 0.46 33,848 420,951 41,035
127 Haitian Krèyol ayisyen ht 0.36 52,450 709,372 61,688
128 Chechen Нохчийн ce 0.17 90,383 663,009 105,224
129 Minangkabau Bahaso Minangkabau min 0.006 221,603 925,899 229,833
No. Language Language (local) Wiki Depth Articles Edits Total

## Trends

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 70 109 11 129 188 122 12 148 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