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 888 = 21.25 × 41.79 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 1411 = 215.67 × 6.54.

The smallest depth has Minangkabau Wikipedia which has the depth 0.0064 = 4.3 × 0.0015.

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 31 May 2015.

No. Language Language (local) Wiki Depth Articles Edits Total
1 English English en 888.07 4,910,111 778,914,069 36,650,157
2 Bengali বাংলা bn 485.31 36,323 1,938,125 399,715
3 Serbo-Croatian Srpskohrvatski / Српскохрватски sh 360.53 425,177 17,578,195 4,518,037
4 Malayalam മലയാളം ml 285.42 39,323 2,239,804 269,967
5 Thai ไทย th 267.52 95,997 6,369,856 562,644
6 Egyptian Arabic مصرى arz 249.43 14,224 685,660 100,025
7 Hebrew עברית he 253.35 174,348 18,091,303 732,897
8 Turkish Türkçe tr 228.88 248,544 16,673,446 1,297,467
9 Persian فارسی fa 209.86 459,825 20,224,683 3,044,173
10 Arabic العربية ar 214.64 374,262 18,947,434 2,273,674
11 French Français fr 205.25 1,639,984 118,811,007 7,570,978
12 Spanish Español es 189.97 1,184,712 88,892,528 5,093,289
13 Simple English Simple English simple 171.92 113,759 12,543,250 369,902
14 Urdu اردو ur 162.57 72,735 4,333,404 327,805
15 Bosnian Bosanski bs 159.37 61,817 2,819,772 327,965
16 Chinese 中文 zh 147.86 829,230 37,487,261 4,207,099
17 Sorani کوردی ckb 137.28 15,498 491,042 95,632
18 Macedonian Македонски mk 136.11 82,523 4,170,490 368,845
19 Portuguese Português pt 130.2 879,282 43,759,909 3,858,561
20 Russian Русский ru 125.88 1,235,084 84,205,009 4,404,255
21 Italian Italiano it 108.93 1,209,051 78,902,821 4,077,747
22 German Deutsch de 97.41 1,831,988 149,059,386 5,213,593
23 Ossetian Иронау os 94.1 10,188 482,004 37,902
24 Hindi हिन्दी hi 98.46 100,369 2,956,132 516,776
25 Latvian Latviešu lv 92.92 61,561 2,432,162 252,930
26 Korean 한국어 ko 86.67 320,242 16,211,140 1,095,137
27 Sinhalese සිංහල si 85.36 11,289 346,535 51,494
28 Hungarian Magyar hu 75.82 325,693 16,880,802 1,024,277
29 Aragonese Aragonés an 81.65 30,641 1,608,426 99,507
30 Venetian Vèneto vec 77.54 10,593 589,153 32,502
31 Romanian Română ro 76 329,606 9,958,470 1,411,370
32 Indonesian Bahasa Indonesia id 76.22 361,641 10,515,265 1,588,903
33 Bavarian Boarisch bar 50.83 13,130 465,090 40,883
34 Danish Dansk da 68.71 205,540 8,535,021 689,940
35 Marathi मराठी mr 72.18 42,011 1,385,716 165,279
36 Japanese 日本語 ja 70.75 973,002 57,076,829 2,778,869
37 Greek Ελληνικά el 68.14 107,961 5,449,104 325,920
38 Kannada ಕನ್ನಡ kn 67.93 16,179 532,025 61,523
39 Serbian Српски sr 66.37 321,828 11,415,668 1,156,268
40 Welsh Cymraeg cy 64.03 63,932 5,277,265 150,257
41 Uzbek O‘zbek uz 59.86 127,867 2,345,734 647,697
42 Sakha Саха тыла sah 50.73 10,411 340,381 33,766
43 Yiddish ייִדיש yi 48.26 12,777 518,110 36,259
44 Sanskrit संस्कृतम् sa 49.43 9,977 302,414 33,227
45 Finnish Suomi fi 46.01 374,918 15,879,951 1,019,155
46 Icelandic Íslenska is 43.93 39,474 1,562,891 108,371
47 Czech Čeština cs 41.5 325,660 13,083,995 865,109
48 Amharic አማርኛ am 41.28 12,953 341,650 42,204
49 Mongolian Монгол mn 41.27 14,579 458,020 43,412
50 Tamil தமிழ் ta 40.99 67,273 1,951,365 207,828
51 Tagalog Tagalog tl 37.95 63,417 1,550,390 205,738
52 Ukrainian Українська uk 36.42 580,026 16,621,050 1,699,333
53 Georgian ქართული ka 35.59 96,861 3,040,599 268,626
54 Telugu తెలుగు te 36.77 60,263 1,534,905 188,238
55 Afrikaans Afrikaans af 34.43 35,928 1,419,014 88,607
56 Albanian Shqip sq 35.05 50,682 1,683,222 135,951
57 Quechua Runa Simi qu 34.87 19,329 656,997 51,190
58 Croatian Hrvatski hr 34.44 155,055 4,720,351 429,556
59 Faroese Føroyskt fo 35.41 11,263 328,434 32,271
60 Azerbaijani Azərbaycanca az 34 97,444 3,509,179 248,654
61 Norwegian (Bokmål) Norsk (Bokmål) no 33.88 414,402 14,026,241 1,085,441
62 Lombard Lumbaart lmo 32.47 31,911 1,054,363 82,901
63 Swahili Kiswahili sw 31.47 29,130 994,167 73,586
64 Cantonese 粵語 zh-yue 31.86 37,111 978,404 106,088
65 Belarusian (Taraškievica) Беларуская (тарашкевіца) be-x-old 31.82 56,723 1,871,179 146,147
66 Catalan Català ca 31.07 466,548 15,800,382 1,175,970
67 Estonian Eesti et 30.75 136,171 4,346,035 350,652
68 Low Saxon Plattdüütsch nds 31.65 23,466 781,385 60,073
69 Luxembourgish Lëtzebuergesch lb 29.99 43,926 1,918,144 98,411
70 Armenian Հայերեն hy 28.25 172,908 3,260,344 550,600
71 Min Nan Bân-lâm-gú zh-min-nan 32.98 17,935 502,353 50,638
72 Kurdish Kurdî ku 26.55 21,154 672,563 51,239
73 Basque Euskara eu 26.32 208,459 5,066,768 565,888
74 Alemannic Alemannisch als 25 19,424 652,382 44,906
75 Neapolitan Nnapulitano nap 24.22 14,321 691,770 28,670
76 Slovenian Slovenščina sl 24.17 146,600 4,636,193 342,492
77 Bulgarian Български bg 23.51 203,526 7,152,766 451,473
78 Scottish Gaelic Gàidhlig gd 23.31 13,022 513,723 27,591
79 Bishnupriya Manipuri বিষ্ণুপ্রিয়া মণিপুরী bpy 23.51 25,059 804,326 57,568
80 Punjabi ਪੰਜਾਬੀ pa 23.11 17,614 257,184 57,731
81 Walloon Walon wa 22.65 13,800 322,386 35,633
82 Tatar Татарча tt 22.64 66,973 2,105,173 152,839
83 Polish Polski pl 21.45 1,120,728 43,062,320 2,327,428
84 Belarusian Беларуская be 16.74 94,244 2,108,982 218,312
85 Galician Galego gl 20.92 123,418 3,688,970 278,523
86 West Frisian Frysk fy 20.51 32,097 785,618 77,865
87 Nepali नेपाली ne 19.95 26,460 484,397 72,042
88 Sicilian Sicilianu scn 20.19 25,209 746,627 56,324
89 Vietnamese Tiếng Việt vi 19.93 1,135,642 21,282,961 3,057,144
90 Lithuanian Lietuvių lt 19.87 172,675 4,964,676 387,778
91 Nahuatl Nāhuatl nah 18.27 10,705 407,028 21,130
92 Asturian Asturianu ast 9.96 26,434 824,403 46,179
93 Norwegian (Nynorsk) Nynorsk nn 18.18 121,041 2,941,710 280,396
94 Slovak Slovenčina sk 18.09 205,291 6,097,937 439,778
95 Javanese Basa Jawa jv 17.9 48,473 953,088 121,786
96 Scots Scots sco 17.23 32,034 476,030 89,781
97 Esperanto Esperanto eo 17.09 216,311 5,777,285 471,877
98 Breton Brezhoneg br 16.76 54,271 1,729,214 110,413
99 Sundanese Basa Sunda su 16.45 18,132 470,002 39,438
100 Malay Bahasa Melayu ms 15.61 274,239 4,004,430 740,055
101 Volapük Volapük vo 15.24 120,209 3,305,460 249,003
102 Newari नेवारी new 12.25 72,366 828,626 195,317
103 Tajik Тоҷикӣ tg 12.64 32,604 663,948 70,328
104 Bashkir Башҡорт ba 12.79 34,833 522,969 85,081
105 Interlingua Interlingua ia 12.12 14,456 555,296 25,169
106 Swedish Svenska sv 11.63 1,970,157 30,057,528 4,598,109
107 Dutch Nederlands nl 10.82 1,827,149 45,457,851 3,493,505
108 Malagasy Malagasy mg 10.74 79,333 806,692 212,925
109 Latin Latina Latina 10.3 118,555 3,001,669 222,059
110 Gujarati ગુજરાતી gu 10.55 25,572 394,585 57,200
111 Kazakh Қазақша kk 8.89 211,966 2,417,677 499,215
112 Banyumasan Basa Banyumasan map-bms 8.27 12,938 205,430 26,230
113 Samogitian Žemaitėška bat-smg 6.88 14,081 340,546 23,859
114 Ido Ido io 6.01 26,047 932,492 39,125
115 Irish Gaeilge ga 5.71 35,161 794,070 57,825
116 Mazandarani مَزِروني mzn 6.02 12,057 132,890 24,848
117 Occitan Occitan oc 5.55 88,280 2,110,009 142,304
118 Yoruba Yorùbá yo 5.29 31,073 547,824 53,391
119 Chuvash Чăваш cv 3.93 32,932 566,889 52,881
120 Waray-Waray Winaray war 3.57 1,259,130 6,261,925 2,868,730
121 Cebuano Sinugboanong Binisaya ceb 3.53 1,211,339 5,776,616 2,793,538
122 Burmese language မ္ရန္‌မာစာ my 2.37 31,107 249,550 53,227
123 Piedmontese Piemontèis pms 2.09 63,801 853,161 94,496
124 Kirghiz Кыргызча ky 0.89 31,706 204,359 45,864
125 Buginese Basa Ugi bug 0.94 14,104 197,603 18,256
126 Western Panjabi شاہ مکھی پنجابی pnb 0.46 33,880 422,204 41,073
127 Haitian Krèyol ayisyen ht 0.36 52,456 709,928 61,733
128 Chechen Нохчийн ce 0.17 97,705 823,768 112,738
129 Minangkabau Bahaso Minangkabau min 0.006 221,619 990,236 230,162
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 888 97 205 21 71 109 11 130 190 126 12 148 34 46 31 36 229 76 15 41 76 17 18 69 76 253 215 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.