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 885 = 21.26 × 41.61 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[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 884.74 4,876,939 772,597,732 36,336,200
2 Bengali বাংলা bn 490.23 35,613 1,913,208 392,979
3 Macedonian Македонски mk 136.53 82,035 4,145,882 367,380
4 Malayalam മലയാളം ml 284.67 38,992 2,228,479 266,498
5 Serbo-Croatian Srpskohrvatski / Српскохрватски sh 351.62 396,320 14,921,597 4,458,661
6 Thai ไทย th 265.9 95,089 6,312,488 554,757
7 Egyptian Arabic مصرى arz 257.46 13,965 680,680 99,738
8 Hebrew עברית he 252.21 172,704 17,897,947 724,552
9 Turkish Türkçe tr 228.21 246,779 16,488,902 1,289,180
10 Arabic العربية ar 208.24 371,480 18,626,793 2,223,634
11 Persian فارسی fa 214.38 452,011 20,086,805 3,016,833
12 French Français fr 203.9 1,626,334 117,532,315 7,488,042
13 Spanish Español es 187.97 1,180,655 87,967,145 5,064,751
14 Urdu اردو ur 170.37 70,365 4,300,694 321,467
15 Simple English Simple English simple 172.31 113,042 12,514,557 367,226
16 Bosnian Bosanski bs 162.73 60,783 2,803,081 324,669
17 Chinese 中文 zh 147.53 820,736 37,088,403 4,158,948
18 Sorani کوردی ckb 137.73 15,441 489,823 95,424
19 Portuguese Português pt 129.16 874,851 43,393,028 3,827,955
20 Russian Русский ru 121.84 1,223,626 83,244,973 4,289,653
21 Italian Italiano it 108.51 1,200,235 78,179,371 4,043,580
22 German Deutsch de 97.69 1,817,804 147,778,272 5,182,292
23 Ossetian Иронау os 94.06 10,160 481,464 37,751
24 Latvian Latviešu lv 93.14 60,990 2,417,483 250,440
25 Hindi हिन्दी hi 92.61 102,290 2,886,427 520,169
26 Hungarian Magyar hu 85.06 307,035 16,712,069 999,592
27 Korean 한국어 ko 86.73 315,455 15,973,996 1,079,007
28 Sinhalese සිංහල si 84.42 11,232 343,941 50,954
29 Aragonese Aragonés an 81.74 30,607 1,606,780 99,453
30 Venetian Vèneto vec 78.07 10,555 588,286 32,462
31 Bavarian Boarisch bar 74.33 10,955 457,489 38,274
32 Romanian Română ro 75.64 318,343 9,805,846 1,342,996
33 Indonesian Bahasa Indonesia id 75.08 359,568 10,407,425 1,569,431
34 Danish Dansk da 72.65 199,529 8,482,544 681,610
35 Marathi मराठी mr 71.79 41,858 1,379,970 164,197
36 Japanese 日本語 ja 70.31 967,879 56,627,966 2,759,421
37 Greek Ελληνικά el 67.3 106,915 5,381,891 321,186
38 Serbian Српски sr 66.27 320,105 11,332,805 1,150,346
39 Welsh Cymraeg cy 64.08 63,673 5,271,562 149,509
40 Uzbek O‘zbek uz 59.79 127,815 2,342,835 647,276
41 Kannada ಕನ್ನಡ kn 66.7 16,086 526,834 60,667
42 Sakha Саха тыла sah 50.66 10,349 339,301 33,491
43 Yiddish ייִדיש yi 48.66 12,672 516,733 36,006
44 Sanskrit संस्कृतम् sa 47.22 9,937 298,917 32,427
45 Finnish Suomi fi 46.23 372,297 15,797,999 1,013,470
46 Icelandic Íslenska is 43.96 39,385 1,560,747 108,114
47 Czech Čeština cs 41.57 322,481 12,979,727 856,661
48 Amharic አማርኛ am 41.22 12,946 341,318 42,156
49 Mongolian Монгол mn 41.15 14,418 454,431 42,803
50 Tamil தமிழ் ta 40.67 66,694 1,936,975 205,094
51 Tagalog Tagalog tl 37.91 63,306 1,545,749 205,379
52 Ukrainian Українська uk 37.03 570,800 16,428,484 1,682,260
53 Georgian ქართული ka 36.42 94,919 3,017,607 264,509
54 Afrikaans Afrikaans af 35.17 35,399 1,411,084 87,745
55 Quechua Runa Simi qu 34.89 19,319 656,719 51,174
56 Croatian Hrvatski hr 34.65 154,023 4,696,159 427,617
57 Telugu తెలుగు te 35.83 60,164 1,506,224 187,087
58 Albanian Shqip sq 34.91 50,510 1,675,286 135,331
59 Azerbaijani Azərbaycanca az 33.8 96,139 3,479,770 244,168
60 Norwegian (Bokmål) Norsk (Bokmål) no 33.66 412,167 13,942,699 1,076,630
61 Lombard Lumbaart lmo 32.37 31,835 1,053,350 82,532
62 Cantonese 粵語 zh-yue 31.92 36,673 971,255 104,701
63 Swahili Kiswahili sw 32.01 28,831 992,571 73,101
64 Belarusian (Taraškievica) Беларуская (тарашкевіца) be-x-old 31.81 56,469 1,863,287 145,453
65 Armenian Հայերեն hy 30 165,202 3,167,485 538,174
66 Estonian Eesti et 30.96 134,846 4,321,399 347,673
67 Catalan Català ca 30.94 462,412 15,651,595 1,163,800
68 Low Saxon Plattdüütsch nds 30.72 23,161 776,996 58,332
69 Luxembourgish Lëtzebuergesch lb 30.09 43,644 1,912,568 97,775
70 Min Nan Bân-lâm-gú zh-min-nan 29.52 13,347 472,049 32,325
71 Faroese Føroyskt fo 32.91 11,169 324,420 30,966
72 Kurdish Kurdî ku 26.76 21,037 670,575 51,067
73 Alemannic Alemannisch als 26.25 18,946 647,605 44,348
74 Basque Euskara eu 26.26 207,719 5,052,442 563,083
75 Neapolitan Nnapulitano nap 24.35 14,282 691,377 28,623
76 Slovenian Slovenščina sl 24.15 146,091 4,619,098 341,208
77 Bulgarian Български bg 24.1 192,210 7,076,858 422,843
78 Scottish Gaelic Gàidhlig gd 23.65 12,919 512,502 27,463
79 Bishnupriya Manipuri বিষ্ণুপ্রিয়া মণিপুরী bpy 23.53 25,058 804,277 57,586
80 Walloon Walon wa 22.71 13,737 321,443 35,489
81 Tatar Татарча tt 22.52 66,844 2,101,844 152,214
82 Punjabi ਪੰਜਾਬੀ pa 23.36 16,948 251,594 55,383
83 Belarusian Беларуская be 21.2 83,594 2,066,883 204,717
84 Polish Polski pl 21.29 1,113,472 42,710,343 2,307,591
85 Galician Galego gl 20.7 122,557 3,655,418 275,683
86 West Frisian Frysk fy 20.4 31,949 783,444 77,265
87 Sicilian Sicilianu scn 20.3 25,145 746,156 56,251
88 Nepali नेपाली ne 20.34 25,875 476,700 70,875
89 Vietnamese Tiếng Việt vi 19.81 1,133,277 21,153,985 3,047,662
90 Lithuanian Lietuvių lt 19.77 172,076 4,951,977 385,543
91 Nahuatl Nāhuatl nah 18.79 10,475 404,605 20,759
92 Asturian Asturianu ast 18.38 20,314 796,886 39,767
93 Norwegian (Nynorsk) Nynorsk nn 18.15 120,677 2,930,074 279,460
94 Slovak Slovenčina sk 18.08 204,614 6,076,342 438,239
95 Scots Scots sco 17.11 31,572 472,226 87,935
96 Javanese Basa Jawa jv 17.78 48,430 951,286 121,380
97 Esperanto Esperanto eo 17.1 215,259 5,756,482 469,512
98 Breton Brezhoneg br 16.9 53,937 1,724,783 109,914
99 Sundanese Basa Sunda su 16.26 17,985 467,289 38,911
100 Malay Bahasa Melayu ms 15.52 273,809 3,991,676 737,454
101 Volapük Volapük vo 15.24 120,198 3,304,908 249,014
102 Newari नेवारी new 12.24 72,364 828,462 195,298
103 Interlingua Interlingua ia 12.07 14,429 553,889 25,099
104 Swedish Svenska sv 11.58 1,966,124 29,897,946 4,587,073
105 Bashkir Башҡорт ba 11.96 34,643 511,447 82,872
106 Dutch Nederlands nl 10.8 1,822,175 45,181,449 3,485,182
107 Malagasy Malagasy mg 10.74 79,308 806,208 212,872
108 Latin Latina Latina 10.49 116,842 2,986,733 219,424
109 Gujarati ગુજરાતી gu 10.16 25,514 391,662 56,373
110 Kazakh Қазақша kk 8.88 211,666 2,399,417 499,349
111 Tajik Тоҷикӣ tg 11.28 31,763 643,622 65,898
112 Banyumasan Basa Banyumasan map-bms 8.29 12,930 205,343 26,239
113 Samogitian Žemaitėška bat-smg 7.03 13,884 339,335 23,593
114 Irish Gaeilge ga 5.9 34,520 789,665 57,058
115 Ido Ido io 6.01 25,933 931,130 38,935
116 Mazandarani مَزِروني mzn 5.81 12,029 131,700 24,551
117 Occitan Occitan oc 5.51 88,287 2,104,688 142,135
118 Yoruba Yorùbá yo 5.32 31,046 547,453 53,406
119 Chuvash Чăваш cv 4.03 32,460 565,018 52,286
120 Waray-Waray Winaray war 3.57 1,259,088 6,261,379 2,868,696
121 Cebuano Sinugboanong Binisaya ceb 3.53 1,211,248 5,775,414 2,793,271
122 Burmese language မ္ရန္‌မာစာ my 2.18 31,223 239,107 52,887
123 Piedmontese Piemontèis pms 2.07 63,771 852,683 94,289
124 Kirghiz Кыргызча ky 1.04 29,377 198,506 43,403
125 Buginese Basa Ugi bug 0.94 14,103 197,545 18,271
126 Western Panjabi شاہ مکھی پنجابی pnb 0.46 33,848 420,941 41,034
127 Haitian Krèyol ayisyen ht 0.36 52,449 709,344 61,681
128 Chechen Нохчийн ce 0.17 89,450 661,672 104,283
129 Minangkabau Bahaso Minangkabau min 0.006 221,603 925,880 229,831
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 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

See also[edit]

Lists of Wikipedias by various criteria: edit

Notes[edit]

  1. List of Wikipedias
  2. At November 2008.