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 882 = 21.27 × 41.5 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 1425 = 215.67 × 6.61.

The smallest depth has Minangkabau Wikipedia which has the depth 0.0051 = 3.68 × 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 882.44 4,863,415 769,656,678 36,192,201
2 Bengali বাংলা bn 489.28 35,425 1,903,368 390,230
3 Macedonian Македонски mk 341.25 81,886 3,743,324 766,298
4 Malayalam മലയാളം ml 283.93 38,944 2,225,817 265,645
5 Serbo-Croatian Srpskohrvatski / Српскохрватски sh 281.95 395,766 13,538,542 4,014,506
6 Thai ไทย th 265.21 94,634 6,285,163 550,902
7 Egyptian Arabic مصرى arz 262.22 13,831 679,344 99,580
8 Hebrew עברית he 252.02 171,901 17,806,935 721,031
9 Turkish Türkçe tr 228.45 245,999 16,440,123 1,285,865
10 Arabic العربية ar 221.72 357,024 18,448,527 2,187,716
11 Persian فارسی fa 214.6 450,451 20,029,614 3,007,362
12 French Français fr 202.97 1,619,830 116,953,715 7,440,664
13 Spanish Español es 187.47 1,177,153 87,492,677 5,048,909
14 Urdu اردو ur 175.15 68,816 4,264,696 317,193
15 Simple English Simple English simple 172.33 112,681 12,499,009 365,704
16 Bosnian Bosanski bs 166.19 60,018 2,795,922 322,992
17 Chinese 中文 zh 146.79 817,355 36,887,605 4,131,439
18 Sorani کوردی ckb 138.32 15,388 488,939 95,279
19 Portuguese Português pt 128.68 872,943 43,231,099 3,814,322
20 Russian Русский ru 121.37 1,218,157 82,857,695 4,261,738
21 Italian Italiano it 107.92 1,196,741 77,837,467 4,023,178
22 German Deutsch de 97.73 1,811,919 147,134,181 5,169,317
23 Ossetian Иронау os 93.96 10,143 481,143 37,643
24 Latvian Latviešu lv 93.29 60,687 2,407,208 249,324
25 Hindi हिन्दी hi 92.07 102,008 2,871,461 517,557
26 Hungarian Magyar hu 89.07 299,829 16,634,787 990,209
27 Korean 한국어 ko 86.44 313,786 15,881,203 1,071,640
28 Sinhalese සිංහල si 84.51 11,210 343,109 50,904
29 Aragonese Aragonés an 81.5 30,600 1,603,255 99,374
30 Venetian Vèneto vec 78.11 10,552 588,192 32,459
31 Bavarian Boarisch bar 77.1 10,701 455,473 37,754
32 Romanian Română ro 74.96 317,608 9,773,261 1,333,240
33 Indonesian Bahasa Indonesia id 74.25 358,744 10,331,183 1,559,969
34 Danish Dansk da 72.6 199,036 8,460,421 679,712
35 Marathi मराठी mr 71.52 41,740 1,371,854 163,667
36 Japanese 日本語 ja 70.16 965,305 56,427,815 2,750,404
37 Greek Ελληνικά el 66.8 106,444 5,351,572 318,782
38 Serbian Српски sr 66.05 319,423 11,271,837 1,147,786
39 Welsh Cymraeg cy 64.08 63,573 5,269,673 149,207
40 Uzbek O‘zbek uz 59.76 127,795 2,341,589 647,118
41 Kannada ಕನ್ನಡ kn 59.19 17,032 522,720 62,250
42 Sakha Саха тыла sah 51.11 10,326 338,837 33,559
43 Yiddish ייִדיש yi 49.05 12,605 516,073 35,882
44 Sanskrit संस्कृतम् sa 46.51 9,938 297,956 32,230
45 Finnish Suomi fi 46.31 371,040 15,755,230 1,010,526
46 Icelandic Íslenska is 44.06 39,297 1,558,842 107,933
47 Czech Čeština cs 41.57 320,841 12,931,202 851,759
48 Amharic አማርኛ am 41.24 12,939 341,137 42,145
49 Mongolian Монгол mn 41.18 14,314 451,735 42,484
50 Tamil தமிழ் ta 40.64 66,534 1,931,844 204,549
51 Tagalog Tagalog tl 37.91 63,285 1,545,124 205,335
52 Ukrainian Українська uk 37.5 567,069 16,333,520 1,681,144
53 Georgian ქართული ka 36.6 94,221 3,008,306 262,660
54 Afrikaans Afrikaans af 35.24 35,265 1,408,081 87,434
55 Quechua Runa Simi qu 34.9 19,315 656,642 51,166
56 Croatian Hrvatski hr 34.77 153,530 4,686,695 426,689
57 Telugu తెలుగు te 35.43 60,071 1,492,441 186,464
58 Albanian Shqip sq 34.77 50,505 1,671,800 135,190
59 Azerbaijani Azərbaycanca az 34 95,512 3,466,197 242,833
60 Norwegian (Bokmål) Norsk (Bokmål) no 33.65 410,639 13,901,290 1,072,154
61 Lombard Lumbaart lmo 32.36 31,781 1,052,807 82,341
62 Cantonese 粵語 zh-yue 32.11 36,457 968,487 104,234
63 Swahili Kiswahili sw 32.13 28,716 991,704 72,823
64 Belarusian (Taraškievica) Беларуская (тарашкевіца) be-x-old 31.87 56,316 1,859,081 145,145
65 Armenian Հայերեն hy 31.42 160,348 3,127,675 530,551
66 Estonian Eesti et 31 134,222 4,308,659 346,006
67 Catalan Català ca 30.94 460,930 15,607,987 1,159,860
68 Low Saxon Plattdüütsch nds 30.66 23,074 774,223 58,065
69 Luxembourgish Lëtzebuergesch lb 30.11 43,546 1,908,191 97,586
70 Min Nan Bân-lâm-gú zh-min-nan 29.68 13,283 470,697 32,214
71 Faroese Føroyskt fo 28.83 11,152 321,722 29,186
72 Kurdish Kurdî ku 26.79 20,988 669,474 50,961
73 Alemannic Alemannisch als 26.69 18,759 645,334 44,093
74 Basque Euskara eu 26.21 207,444 5,044,980 561,880
75 Neapolitan Nnapulitano nap 24.32 14,276 691,229 28,594
76 Slovenian Slovenščina sl 24.13 145,811 4,610,868 340,417
77 Bulgarian Български bg 24.01 191,562 7,032,365 421,326
78 Scottish Gaelic Gàidhlig gd 23.55 12,941 512,157 27,490
79 Bishnupriya Manipuri বিষ্ণুপ্রিয়া মণিপুরী bpy 23.54 25,056 804,247 57,586
80 Walloon Walon wa 22.75 13,704 321,116 35,407
81 Tatar Татарча tt 22.42 66,783 2,099,191 151,814
82 Punjabi ਪੰਜਾਬੀ pa 22.3 16,792 239,020 54,734
83 Belarusian Беларуская be 21.22 83,050 2,057,924 203,311
84 Polish Polski pl 21.25 1,109,919 42,581,878 2,298,509
85 Galician Galego gl 20.62 122,186 3,641,481 274,514
86 West Frisian Frysk fy 20.31 31,792 778,267 76,795
87 Sicilian Sicilianu scn 20.24 25,135 744,817 56,194
88 Nepali नेपाली ne 20.19 25,848 474,596 70,667
89 Vietnamese Tiếng Việt vi 19.74 1,132,766 21,112,501 3,043,351
90 Lithuanian Lietuvių lt 19.71 171,725 4,944,363 384,234
91 Nahuatl Nāhuatl nah 18.89 10,445 404,268 20,725
92 Asturian Asturianu ast 18.41 20,213 795,987 39,540
93 Norwegian (Nynorsk) Nynorsk nn 18.15 120,560 2,926,000 279,198
94 Slovak Slovenčina sk 18.08 204,097 6,062,637 437,166
95 Scots Scots sco 17.94 30,658 469,411 86,357
96 Javanese Basa Jawa jv 17.79 48,420 951,083 121,364
97 Esperanto Esperanto eo 17.16 214,565 5,747,926 468,281
98 Breton Brezhoneg br 16.93 53,782 1,721,688 109,614
99 Sundanese Basa Sunda su 15.99 17,981 466,058 38,702
100 Malay Bahasa Melayu ms 15.43 273,647 3,985,443 735,452
101 Volapük Volapük vo 15.25 120,169 3,304,818 248,985
102 Newari नेवारी new 12.24 72,361 828,428 195,289
103 Interlingua Interlingua ia 12.03 14,407 553,673 25,033
104 Swedish Svenska sv 11.56 1,964,534 29,826,815 4,581,914
105 Bashkir Башҡорт ba 11.26 34,496 502,280 80,982
106 Dutch Nederlands nl 10.77 1,820,447 45,052,412 3,481,271
107 Malagasy Malagasy mg 10.74 79,288 805,965 212,827
108 Latin Latina Latina 10.58 116,086 2,979,187 218,266
109 Gujarati ગુજરાતી gu 10.04 25,469 390,390 56,037
110 Kazakh Қазақша kk 8.84 211,292 2,389,171 498,065
111 Tajik Тоҷикӣ tg 8.56 31,621 609,228 60,854
112 Banyumasan Basa Banyumasan map-bms 8.18 12,928 205,198 26,118
113 Samogitian Žemaitėška bat-smg 7.06 13,857 339,144 23,559
114 Irish Gaeilge ga 6.03 34,180 788,157 56,685
115 Ido Ido io 5.99 25,885 930,054 38,835
116 Mazandarani مَزِروني mzn 5.8 12,025 131,627 24,533
117 Occitan Occitan oc 5.47 88,405 2,101,421 142,195
118 Yoruba Yorùbá yo 5.33 31,041 547,324 53,443
119 Chuvash Чăваш cv 3.99 32,458 564,670 52,163
120 Waray-Waray Winaray war 3.57 1,259,054 6,261,044 2,868,641
121 Cebuano Sinugboanong Binisaya ceb 3.54 1,208,917 5,772,722 2,790,854
122 Burmese language မ္ရန္‌မာစာ my 2.16 31,103 237,808 52,608
123 Piedmontese Piemontèis pms 2.06 63,768 852,544 94,200
124 Kirghiz Кыргызча ky 1.26 28,839 195,652 44,228
125 Buginese Basa Ugi bug 0.94 14,105 197,528 18,272
126 Western Panjabi شاہ مکھی پنجابی pnb 0.46 33,822 420,568 41,001
127 Haitian Krèyol ayisyen ht 0.35 52,449 709,139 61,649
128 Chechen Нохчийн ce 0.19 83,784 612,124 98,557
129 Minangkabau Bahaso Minangkabau min 0.005 221,581 845,371 229,800
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 882 98 203 21 70 108 11 129 187 121 12 147 34 46 31 38 228 75 15 42 89 17 18 73 74 252 222 86 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.