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 881 = 21.69 × 40.6 and is the deepest one for Wikipedias with number of articles greater than 10000.

The largest depth for the unblocked Wikipedias has Aromanian Wikipedia which has the depth 659 = 49.58 × 13.29.

The smallest depth has Minangkabau Wikipedia which has the depth 0.0019 = 2.12 × 0.0009.

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 16 November 2014.

No. Language Language (local) Wiki Depth Articles Edits Total
1 English English en 880.86 4,654,122 744,342,758 34,310,489
2 Bengali বাংলা bn 490.75 33,019 1,795,813 360,956
3 Macedonian Македонски mk 488.68 79,728 3,372,906 1,074,510
4 Malayalam മലയാളം ml 290.16 37,285 2,166,697 255,296
5 Egyptian Arabic مصرى arz 262.3 13,088 657,767 92,635
6 Hebrew עברית he 256.41 163,604 17,153,668 688,426
7 Thai ไทย th 250.97 90,759 6,021,564 508,635
8 Serbo-Croatian Srpskohrvatski / Српскохрватски sh 246.21 274,629 7,899,948 2,873,613
9 Turkish Türkçe tr 210.14 236,488 15,816,643 1,168,126
10 Arabic العربية ar 193.31 340,123 17,077,100 1,929,811
11 French Français fr 190.52 1,563,901 111,659,049 6,948,902
12 Bosnian Bosanski bs 188.08 54,973 2,710,966 309,856
13 Spanish Español es 175.55 1,139,761 83,755,692 4,727,534
14 Persian فارسی fa 166.37 431,993 18,509,777 2,465,665
15 Urdu اردو ur 154.08 62,341 4,086,154 256,052
16 Sorani کوردی ckb 139.53 14,962 476,195 93,112
17 Chinese 中文 zh 128.67 796,587 34,777,327 3,772,721
18 Simple English Simple English simple 127.55 118,087 12,331,883 339,308
19 Portuguese Português pt 124.4 850,209 41,726,343 3,657,840
20 Russian Русский ru 114.52 1,165,128 79,263,563 3,947,643
21 Italian Italiano it 104.57 1,158,221 74,574,402 3,848,892
22 Hungarian Magyar hu 99.09 270,554 16,012,457 913,990
23 Romanian Română ro 97.07 254,943 9,273,654 1,132,821
24 Latvian Latviešu lv 94.64 57,050 2,312,265 233,361
25 German Deutsch de 89.21 1,779,246 141,694,114 4,906,433
26 Korean 한국어 ko 83.42 295,121 15,031,622 985,175
27 Aragonese Aragonés an 82.18 30,284 1,596,278 98,467
28 Venetian Vèneto vec 76.14 10,480 579,297 31,959
29 Bavarian Boarisch bar 73.65 10,551 438,605 36,768
30 Danish Dansk da 69.97 192,992 8,213,682 645,564
31 Japanese 日本語 ja 68.86 935,108 54,634,803 2,641,320
32 Sinhalese සිංහල si 68.37 11,531 329,368 47,884
33 Marathi मराठी mr 65 40,831 1,328,822 152,268
34 Serbian Српски sr 64.83 311,417 10,873,391 1,113,967
35 Indonesian Bahasa Indonesia id 64.05 350,766 9,291,086 1,465,811
36 Welsh Cymraeg cy 64.01 60,610 5,228,245 139,942
37 Yiddish ייִדיש yi 61.14 11,431 507,338 34,860
38 Uzbek O‘zbek uz 58.13 127,749 2,297,511 643,067
39 Hindi हिन्दी hi 57.54 116,195 2,752,835 486,880
40 Kannada ಕನ್ನಡ kn 44.78 17,093 472,379 56,730
41 Greek Ελληνικά el 43.49 112,362 5,066,626 289,485
42 Finnish Suomi fi 44.42 360,090 15,322,596 961,127
43 Icelandic Íslenska is 43.38 38,390 1,530,089 104,459
44 Sakha Саха тыла sah 42.9 10,649 335,169 32,302
45 Georgian ქართული ka 39.57 86,535 2,882,882 245,340
46 Min Nan Bân-lâm-gú zh-min-nan 38.36 11,376 464,199 28,981
47 Czech Čeština cs 38.73 309,014 12,417,023 795,930
48 Tamil தமிழ் ta 37.47 64,831 1,838,759 193,608
49 Tagalog Tagalog tl 37.06 62,861 1,524,750 202,214
50 Ukrainian Українська uk 36.5 538,332 15,362,809 1,582,084
51 Mongolian Монгол mn 35.82 13,674 430,290 37,994
52 Swahili Kiswahili sw 34.74 27,191 979,204 70,056
53 Afrikaans Afrikaans af 34.79 33,591 1,361,837 82,292
54 Sanskrit संस्कृतम् sa 34.91 10,250 287,360 29,728
55 Quechua Runa Simi qu 34.76 19,191 653,985 50,693
56 Croatian Hrvatski hr 34.15 149,689 4,582,905 411,958
57 Armenian Հայերեն hy 33.85 139,003 2,693,680 480,595
58 Cantonese 粵語 zh-yue 33.08 33,531 932,964 95,101
59 Belarusian (Taraškievica) Беларуская (тарашкевіца) be-x-old 32.65 54,838 1,825,479 142,327
60 Malagasy Malagasy mg 32.15 47,064 730,804 179,209
61 Lombard Lumbaart lmo 32.02 31,417 1,047,760 80,776
62 Low Saxon Plattdüütsch nds 30.99 22,150 764,190 55,326
63 Estonian Eesti et 30.88 128,444 4,177,661 328,629
64 Catalan Català ca 30.26 442,258 14,728,183 1,110,202
65 Luxembourgish Lëtzebuergesch lb 30.06 42,086 1,864,331 93,863
66 Azerbaijani Azərbaycanca az 29.7 100,177 3,292,616 250,967
67 Alemannic Alemannisch als 26.98 17,617 613,761 41,373
68 Bulgarian Български bg 26.99 169,485 6,723,465 378,372
69 Albanian Shqip sq 26.51 51,854 1,620,954 126,409
70 Norwegian (Bokmål) Norsk (Bokmål) no 25.98 435,352 14,594,815 1,022,826
71 Kurdish Kurdî ku 25.85 20,839 661,784 49,950
72 Basque Euskara eu 25.19 204,465 4,842,399 550,443
73 Faroese Føroyskt fo 24.64 10,693 308,488 26,144
74 Bishnupriya Manipuri বিষ্ণুপ্রিয়া মণিপুরী bpy 23.29 25,126 803,759 57,577
75 Neapolitan Nnapulitano nap 23.23 14,275 688,853 28,193
76 Telugu తెలుగు te 22.91 59,619 1,329,871 157,955
77 Walloon Walon wa 22.47 13,584 318,458 34,900
78 Tatar Татарча tt 21.66 64,712 2,059,460 144,480
79 Slovenian Slovenščina sl 21.46 142,970 4,471,964 320,174
80 Belarusian Беларуская be 21.36 77,670 1,964,334 189,006
81 Scots Scots sco 19.94 27,682 452,988 79,454
82 Sicilian Sicilianu scn 20.15 24,595 738,197 54,624
83 Amharic አማርኛ am 19.87 16,230 332,495 41,918
84 Galician Galego gl 19.74 118,075 3,496,793 261,528
85 Polish Polski pl 19.67 1,077,097 41,027,606 2,177,535
86 Vietnamese Tiếng Việt vi 19.5 1,110,253 20,132,260 3,003,784
87 Nahuatl Nāhuatl nah 19.09 10,144 398,148 20,103
88 Punjabi ਪੰਜਾਬੀ pa 19.02 15,834 219,155 48,234
89 Lithuanian Lietuvių lt 19.04 168,631 4,852,322 372,496
90 Slovak Slovenčina sk 18.57 196,310 5,930,049 421,933
91 Asturian Asturianu ast 18.16 19,800 788,524 38,425
92 Norwegian (Nynorsk) Nynorsk nn 17.74 117,942 2,885,735 269,868
93 Esperanto Esperanto eo 17.71 205,696 5,647,149 450,036
94 Breton Brezhoneg br 17.47 51,488 1,680,572 105,384
95 Volapük Volapük vo 15.46 119,370 3,300,246 248,033
96 Sundanese Basa Sunda su 15.28 17,736 461,136 37,512
97 West Frisian Frysk fy 14.48 31,096 738,478 66,647
98 Nepali नेपाली ne 13.62 27,233 437,638 66,375
99 Malay Bahasa Melayu ms 14.04 270,969 3,874,580 703,754
100 Newari नेवारी new 12.66 70,892 823,031 193,084
101 Javanese Basa Jawa jv 11.45 48,227 909,447 103,196
102 Interlingua Interlingua ia 11.39 14,327 551,560 24,521
103 Swedish Svenska sv 11.03 1,948,703 28,785,387 4,510,802
104 Latin Latina Latina 10.46 111,807 2,901,079 208,814
105 Dutch Nederlands nl 8.97 1,798,196 43,525,501 3,275,821
106 Bashkir Башҡорт ba 8.69 33,278 456,112 72,342
107 Kazakh Қазақша kk 8.35 209,301 2,266,547 490,728
108 Gujarati ગુજરાતી gu 8.09 25,571 378,318 52,730
109 Banyumasan Basa Banyumasan map-bms 7.74 13,054 203,082 26,070
110 Samogitian Žemaitėška bat-smg 7.09 13,686 334,860 23,301
111 Irish Gaeilge ga 6.52 32,305 767,282 54,230
112 Tajik Тоҷикӣ tg 6.16 30,475 459,220 57,167
113 Scottish Gaelic Gàidhlig gd 5.72 17,503 492,419 27,376
114 Mazandarani مَزِروني mzn 5.37 12,015 129,548 24,003
115 Occitan Occitan oc 5.32 87,842 2,087,989 140,377
116 Yoruba Yorùbá yo 5.27 31,058 546,228 53,336
117 Ido Ido io 5.04 26,125 924,930 38,022
118 Chuvash Чăваш cv 4.38 30,186 547,397 49,101
119 Cebuano Sinugboanong Binisaya ceb 3.54 1,208,462 5,768,390 2,790,156
120 Waray-Waray Winaray war 3.54 1,258,828 6,248,085 2,862,738
121 Piedmontese Piemontèis pms 1.97 63,650 848,491 93,248
122 Kirghiz Кыргызча ky 1.34 27,429 187,234 42,585
123 Burmese language မ္ရန္‌မာစာ my 1.11 32,387 221,676 48,294
124 Buginese Basa Ugi bug 0.91 14,089 197,048 18,175
125 Western Panjabi شاہ مکھی پنجابی pnb 0.46 33,220 414,922 40,198
126 Haitian Krèyol ayisyen ht 0.27 53,166 706,459 61,370
127 Chechen Нохчийн ce 0.2 67,491 401,656 80,954
128 Minangkabau Bahaso Minangkabau min 0.002 221,130 482,798 227,816
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 881 89 191 20 69 105 9 124 176 115 11 129 26 44 30 37 210 97 15 39 99 18 19 70 64 256 193 83 19 65
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.