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 880 = 21.27 × 41.38 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 = 215.66 × 6.61.

The smallest depth has Minangkabau Wikipedia which has the depth 0.0042 = 3.04 × 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 21 April 2015.

No. Language Language (local) Wiki Depth Articles Edits Total
1 English English en 879.99 4,857,541 767,796,150 36,105,066
2 Bengali বাংলা bn 487.63 35,351 1,897,535 388,635
3 Macedonian Македонски mk 473.19 81,774 3,425,598 1,081,065
4 Malayalam മലയാളം ml 283.51 38,912 2,223,581 265,173
5 Thai ไทย th 264.26 94,413 6,267,227 548,428
6 Egyptian Arabic مصرى arz 262.75 13,807 678,605 99,509
7 Hebrew עברית he 253.84 171,486 17,749,242 722,866
8 Serbo-Croatian Srpskohrvatski / Српскохрватски sh 257.05 395,452 12,325,773 4,013,210
9 Turkish Türkçe tr 227.17 245,611 16,406,225 1,279,380
10 Arabic العربية ar 220.53 355,881 18,368,266 2,174,088
11 Persian فارسی fa 214.36 449,879 19,993,500 3,002,232
12 French Français fr 202.57 1,616,268 116,649,721 7,416,854
13 Spanish Español es 187.57 1,174,474 87,280,120 5,039,551
14 Urdu اردو ur 177.72 68,041 4,253,163 314,830
15 Simple English Simple English simple 172.33 112,496 12,491,335 364,901
16 Bosnian Bosanski bs 168.3 59,587 2,792,706 322,132
17 Chinese 中文 zh 145.8 815,346 36,751,199 4,106,093
18 Sorani کوردی ckb 139.01 15,359 488,288 95,404
19 Portuguese Português pt 128.4 871,824 43,135,593 3,806,541
20 Russian Русский ru 120.86 1,215,291 82,639,175 4,242,444
21 Italian Italiano it 107.59 1,194,536 77,599,110 4,011,878
22 German Deutsch de 97.76 1,808,536 146,809,786 5,161,319
23 Ossetian Иронау os 93.93 10,137 480,983 37,609
24 Latvian Latviešu lv 93.33 60,504 2,403,330 248,425
25 Hungarian Magyar hu 90.25 297,475 16,602,169 986,241
26 Hindi हिन्दी hi 91.98 101,599 2,864,085 514,657
27 Korean 한국어 ko 86.64 312,154 15,822,566 1,066,504
28 Sinhalese සිංහල si 84.53 11,202 342,781 50,883
29 Aragonese Aragonés an 81.54 30,582 1,602,490 99,337
30 Romanian Română ro 78.58 308,911 9,738,483 1,315,253
31 Venetian Vèneto vec 78.05 10,550 588,057 32,442
32 Bavarian Boarisch bar 77.14 10,682 454,790 37,691
33 Indonesian Bahasa Indonesia id 73.76 358,181 10,309,770 1,551,539
34 Danish Dansk da 72.56 198,794 8,448,465 678,783
35 Marathi मराठी mr 71.39 41,667 1,368,053 163,299
36 Japanese 日本語 ja 70.14 963,524 56,313,288 2,745,113
37 Greek Ελληνικά el 66.55 106,231 5,336,224 317,683
38 Serbian Српски sr 66.03 318,387 11,225,513 1,144,463
39 Welsh Cymraeg cy 63.91 63,524 5,260,422 148,987
40 Uzbek O‘zbek uz 59.74 127,772 2,340,803 646,957
41 Kannada ಕನ್ನಡ kn 59.53 16,973 521,276 62,213
42 Sakha Саха тыла sah 50.99 10,313 338,553 33,467
43 Yiddish ייִדיש yi 49.17 12,576 515,637 35,817
44 Finnish Suomi fi 46.28 370,562 15,733,751 1,008,978
45 Sanskrit संस्कृतम् sa 46.28 9,927 297,059 32,141
46 Icelandic Íslenska is 44.05 39,254 1,557,811 107,784
47 Czech Čeština cs 41.59 320,094 12,905,727 849,831
48 Amharic አማርኛ am 41.27 12,933 341,008 42,138
49 Mongolian Монгол mn 41.03 14,276 449,833 42,327
50 Tamil தமிழ் ta 40.61 66,431 1,928,383 204,186
51 Tagalog Tagalog tl 37.92 63,268 1,544,784 205,293
52 Ukrainian Українська uk 37.44 565,603 16,285,780 1,675,668
53 Georgian ქართული ka 36.89 93,635 3,002,582 261,461
54 Afrikaans Afrikaans af 35.23 35,179 1,405,959 87,170
55 Quechua Runa Simi qu 34.9 19,312 656,601 51,159
56 Croatian Hrvatski hr 34.85 153,233 4,681,683 426,154
57 Albanian Shqip sq 34.68 50,510 1,669,714 135,124
58 Telugu తెలుగు te 34.59 60,061 1,485,205 184,602
59 Azerbaijani Azərbaycanca az 33.8 95,296 3,456,114 241,856
60 Norwegian (Bokmål) Norsk (Bokmål) no 33.54 410,160 13,876,124 1,069,636
61 Swahili Kiswahili sw 32.7 28,484 991,226 72,552
62 Cantonese 粵語 zh-yue 32.35 36,256 966,400 103,861
63 Lombard Lumbaart lmo 32.34 31,769 1,052,642 82,278
64 Armenian Հայերեն hy 32 157,888 3,091,882 526,460
65 Belarusian (Taraškievica) Беларуская (тарашкевіца) be-x-old 31.9 56,213 1,856,772 144,914
66 Estonian Eesti et 30.98 133,771 4,299,587 344,523
67 Catalan Català ca 30.93 460,025 15,576,856 1,157,466
68 Low Saxon Plattdüütsch nds 30.66 23,028 773,478 57,922
69 Min Nan Bân-lâm-gú zh-min-nan 30.32 13,129 470,223 31,981
70 Luxembourgish Lëtzebuergesch lb 30.05 43,474 1,900,989 97,426
71 Kurdish Kurdî ku 26.79 20,976 669,003 50,935
72 Alemannic Alemannisch als 26.7 18,715 643,872 43,995
73 Basque Euskara eu 26.09 207,305 5,023,748 561,236
74 Faroese Føroyskt fo 26.88 11,140 320,322 28,311
75 Neapolitan Nnapulitano nap 24.32 14,272 691,171 28,584
76 Slovenian Slovenščina sl 24.15 145,598 4,607,065 339,967
77 Bulgarian Български bg 23.97 191,231 7,018,163 420,336
78 Bishnupriya Manipuri বিষ্ণুপ্রিয়া মণিপুরী bpy 23.54 25,056 804,235 57,585
79 Scottish Gaelic Gàidhlig gd 23.58 12,925 511,889 27,462
80 Walloon Walon wa 22.75 13,702 321,083 35,405
81 Tatar Татарча tt 22.32 66,741 2,098,189 151,453
82 Punjabi ਪੰਜਾਬੀ pa 22.29 16,683 237,877 54,322
83 Belarusian Беларуская be 21.34 82,560 2,052,051 202,331
84 Polish Polski pl 21.27 1,107,917 42,520,987 2,294,963
85 Galician Galego gl 20.55 121,901 3,631,877 273,580
86 Sicilian Sicilianu scn 20.26 25,117 744,655 56,168
87 West Frisian Frysk fy 20.25 31,731 777,343 76,541
88 Nepali नेपाली ne 20.21 25,786 473,871 70,491
89 Vietnamese Tiếng Việt vi 19.69 1,132,400 21,072,182 3,041,278
90 Lithuanian Lietuvių lt 19.66 171,568 4,940,401 383,558
91 Nahuatl Nāhuatl nah 18.71 10,482 404,008 20,758
92 Asturian Asturianu ast 18.36 20,195 794,613 39,484
93 Norwegian (Nynorsk) Nynorsk nn 18.14 120,503 2,924,449 279,061
94 Slovak Slovenčina sk 18.09 203,835 6,055,398 436,625
95 Scots Scots sco 17.97 30,566 468,925 86,083
96 Javanese Basa Jawa jv 17.74 48,411 950,505 121,223
97 Esperanto Esperanto eo 17.21 214,032 5,743,269 467,321
98 Breton Brezhoneg br 16.96 53,675 1,719,877 109,438
99 Sundanese Basa Sunda su 15.95 17,966 465,513 38,633
100 Malay Bahasa Melayu ms 15.36 273,496 3,981,056 733,642
101 Volapük Volapük vo 15.27 120,104 3,304,719 248,917
102 Newari नेवारी new 12.24 72,361 828,385 195,256
103 Interlingua Interlingua ia 12.01 14,399 553,590 25,003
104 Swedish Svenska sv 11.55 1,963,334 29,787,518 4,579,046
105 Malagasy Malagasy mg 10.74 79,281 805,764 212,811
106 Dutch Nederlands nl 10.76 1,819,108 44,982,857 3,477,977
107 Bashkir Башҡорт ba 10.81 34,444 493,252 80,085
108 Latin Latina Latina 10.63 115,661 2,974,613 217,660
109 Gujarati ગુજરાતી gu 9.93 25,457 389,544 55,818
110 Kazakh Қазақша kk 8.82 211,004 2,383,188 497,219
111 Banyumasan Basa Banyumasan map-bms 8.18 12,928 205,181 26,117
112 Tajik Тоҷикӣ tg 8.16 31,597 588,036 60,562
113 Samogitian Žemaitėška bat-smg 7.06 13,854 339,065 23,555
114 Irish Gaeilge ga 6.09 33,971 786,867 56,424
115 Ido Ido io 5.99 25,846 929,789 38,756
116 Mazandarani مَزِروني mzn 5.8 12,021 131,571 24,518
117 Occitan Occitan oc 5.48 88,323 2,100,496 142,094
118 Yoruba Yorùbá yo 5.33 31,036 547,268 53,433
119 Chuvash Чăваш cv 3.97 32,446 564,397 52,092
120 Waray-Waray Winaray war 3.57 1,259,040 6,260,867 2,868,609
121 Cebuano Sinugboanong Binisaya ceb 3.54 1,208,915 5,772,537 2,790,831
122 Burmese language မ္ရန္‌မာစာ my 2.12 31,068 236,780 52,310
123 Piedmontese Piemontèis pms 2.06 63,768 852,462 94,159
124 Kirghiz Кыргызча ky 1.37 28,380 194,465 44,216
125 Buginese Basa Ugi bug 0.94 14,105 197,523 18,272
126 Western Panjabi شاہ مکھی پنجابی pnb 0.45 33,798 419,801 40,910
127 Haitian Krèyol ayisyen ht 0.35 52,446 709,082 61,642
128 Chechen Нохчийн ce 0.16 82,041 485,734 96,763
129 Minangkabau Bahaso Minangkabau min 0.004 221,590 698,265 229,792
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 880 98 203 21 70 108 11 128 188 121 12 146 34 46 31 37 227 79 15 42 90 17 18 73 74 254 221 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.