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 886 = 21.64 × 40.93 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 658 = 49.43 × 13.31.

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 14 December 2014.

No. Language Language (local) Wiki Depth Articles Edits Total
1 English English en 885.72 4,673,488 748,197,295 34,571,365
2 Bengali বাংলা bn 488.22 33,405 1,808,507 364,997
3 Macedonian Македонски mk 485.66 80,058 3,378,581 1,075,461
4 Malayalam മലയാളം ml 289.98 37,525 2,176,508 257,181
5 Serbo-Croatian Srpskohrvatski / Српскохрватски sh 299.91 275,431 8,692,223 3,144,248
6 Egyptian Arabic مصرى arz 257.59 13,248 659,907 93,120
7 Hebrew עברית he 257.07 164,422 17,249,308 692,720
8 Thai ไทย th 252.28 91,258 6,054,498 513,303
9 Turkish Türkçe tr 209.43 237,624 15,879,990 1,171,752
10 Arabic العربية ar 196.32 342,796 17,238,799 1,963,967
11 French Français fr 192.34 1,572,120 112,416,542 7,020,969
12 Bosnian Bosanski bs 182.84 55,953 2,720,450 312,296
13 Persian فارسی fa 203.25 438,465 19,106,273 2,854,747
14 Spanish Español es 176.07 1,145,317 84,359,114 4,752,395
15 Urdu اردو ur 149.63 63,427 4,098,025 258,156
16 Sorani کوردی ckb 138.38 15,069 477,494 93,516
17 Chinese 中文 zh 130.09 801,212 35,049,457 3,816,820
18 Simple English Simple English simple 127.61 118,681 12,352,755 341,636
19 Portuguese Português pt 123.73 856,764 41,938,770 3,679,669
20 Russian Русский ru 114.77 1,171,929 79,757,168 3,974,711
21 Italian Italiano it 105.08 1,163,789 75,012,834 3,875,424
22 Hungarian Magyar hu 98.5 272,819 16,099,473 920,112
23 Romanian Română ro 96.94 256,501 9,312,287 1,140,213
24 Ossetian Иронау os 94.68 9,979 477,806 36,999
25 Latvian Latviešu lv 93.93 57,632 2,323,314 235,438
26 German Deutsch de 89.19 1,788,036 142,539,704 4,927,645
27 Korean 한국어 ko 84.04 298,073 15,153,198 1,000,058
28 Aragonese Aragonés an 81.95 30,345 1,597,248 98,598
29 Venetian Vèneto vec 76.92 10,493 581,134 32,133
30 Bavarian Boarisch bar 74.33 10,574 442,925 36,879
31 Danish Dansk da 69.85 193,888 8,246,056 648,207
32 Japanese 日本語 ja 69.05 938,426 54,889,868 2,652,758
33 Sinhalese සිංහල si 67.7 11,656 331,211 48,266
34 Marathi मराठी mr 64.97 40,975 1,331,822 152,866
35 Serbian Српски sr 65.08 312,483 10,940,771 1,118,462
36 Indonesian Bahasa Indonesia id 65.08 352,091 9,343,476 1,484,132
37 Welsh Cymraeg cy 64.62 60,847 5,232,886 141,188
38 Yiddish ייִדיש yi 59.55 11,600 508,641 35,122
39 Uzbek O‘zbek uz 58.3 127,774 2,302,933 643,493
40 Hindi हिन्दी hi 58.45 116,542 2,767,001 492,419
41 Kannada ಕನ್ನಡ kn 45.16 17,269 475,878 57,669
42 Finnish Suomi fi 44.28 362,058 15,382,034 965,755
43 Icelandic Íslenska is 43.44 38,467 1,532,464 104,755
44 Greek Ελληνικά el 43.36 113,312 5,106,737 291,600
45 Sakha Саха тыла sah 43.62 10,671 336,083 32,632
46 Georgian ქართული ka 39.7 87,185 2,899,515 247,763
47 Czech Čeština cs 38.83 310,523 12,481,359 800,572
48 Min Nan Bân-lâm-gú zh-min-nan 37.57 11,505 464,821 29,172
49 Tamil தமிழ் ta 37.45 65,391 1,850,418 195,439
50 Tagalog Tagalog tl 36.78 63,167 1,528,136 202,673
51 Ukrainian Українська uk 36.64 543,231 15,501,578 1,599,381
52 Mongolian Монгол mn 35.33 13,846 432,509 38,355
53 Sanskrit संस्कृतम् sa 35.63 10,250 288,009 29,994
54 Quechua Runa Simi qu 34.87 19,223 654,729 50,858
55 Afrikaans Afrikaans af 34.61 33,878 1,367,640 82,972
56 Swahili Kiswahili sw 34.12 27,483 980,657 70,539
57 Croatian Hrvatski hr 34.06 150,346 4,597,374 413,507
58 Armenian Հայերեն hy 33.5 141,965 2,747,154 488,451
59 Cantonese 粵語 zh-yue 33.19 33,719 935,580 95,925
60 Belarusian (Taraškievica) Беларуская (тарашкевіца) be-x-old 32.45 55,099 1,829,296 142,798
61 Malagasy Malagasy mg 32.14 47,078 730,908 179,244
62 Lombard Lumbaart lmo 32.09 31,481 1,049,014 81,050
63 Norwegian (Bokmål) Norsk (Bokmål) no 31.77 402,634 13,539,714 1,027,999
64 Estonian Eesti et 30.8 129,115 4,193,931 330,158
65 Low Saxon Plattdüütsch nds 30.57 22,368 765,473 55,741
66 Catalan Català ca 30.58 444,705 14,930,281 1,117,446
67 Luxembourgish Lëtzebuergesch lb 29.91 42,429 1,872,537 94,582
68 Azerbaijani Azərbaycanca az 30.2 100,062 3,315,952 251,652
69 Alemannic Alemannisch als 26.69 17,798 617,586 41,690
70 Albanian Shqip sq 26.66 51,922 1,626,173 126,783
71 Kurdish Kurdî ku 25.89 20,864 662,500 50,037
72 Basque Euskara eu 25.25 204,952 4,852,666 552,426
73 Bulgarian Български bg 22.14 185,338 6,769,150 396,352
74 Faroese Føroyskt fo 24.71 10,744 310,696 26,277
75 Telugu తెలుగు te 23.74 59,888 1,347,820 160,605
76 Bishnupriya Manipuri বিষ্ণুপ্রিয়া মণিপুরী bpy 23.3 25,126 803,792 57,590
77 Neapolitan Nnapulitano nap 23.25 14,286 689,020 28,228
78 Walloon Walon wa 22.49 13,613 319,003 34,995
79 Slovenian Slovenščina sl 21.53 143,415 4,489,520 321,512
80 Tatar Татарча tt 21.58 65,660 2,068,320 146,971
81 Belarusian Беларуская be 21.44 78,312 1,975,379 191,084
82 Sicilian Sicilianu scn 20.09 24,644 738,666 54,703
83 Amharic አማርኛ am 19.9 16,235 332,726 41,954
84 Galician Galego gl 19.81 118,736 3,514,059 263,407
85 Polish Polski pl 19.74 1,081,618 41,311,710 2,187,280
86 Scots Scots sco 19.52 28,128 455,040 80,341
87 Vietnamese Tiếng Việt vi 19.59 1,111,015 20,173,947 3,010,490
88 Lithuanian Lietuvių lt 19.15 169,181 4,864,532 374,634
89 Nahuatl Nāhuatl nah 19.13 10,146 398,384 20,119
90 Punjabi ਪੰਜਾਬੀ pa 19.05 16,163 222,567 49,396
91 Slovak Slovenčina sk 18.54 196,892 5,943,395 423,120
92 Asturian Asturianu ast 17.96 20,040 789,790 38,887
93 Norwegian (Nynorsk) Nynorsk nn 17.81 118,228 2,891,696 270,954
94 Esperanto Esperanto eo 17.63 207,012 5,663,244 452,757
95 Breton Brezhoneg br 17.35 51,822 1,685,391 105,940
96 Sundanese Basa Sunda su 15.59 17,772 462,141 37,853
97 Volapük Volapük vo 15.46 119,390 3,300,398 248,069
98 West Frisian Frysk fy 14.56 31,282 740,532 67,257
99 Nepali नेपाली ne 14.47 26,994 445,297 66,757
100 Malay Bahasa Melayu ms 14.07 271,514 3,885,436 705,430
101 Newari नेवारी new 12.6 71,141 823,864 193,517
102 Javanese Basa Jawa jv 11.45 48,333 910,295 103,460
103 Interlingua Interlingua ia 11.43 14,348 551,867 24,586
104 Swedish Svenska sv 11.16 1,950,765 29,114,597 4,517,893
105 Latin Latina Latina 10.5 112,133 2,908,041 209,687
106 Dutch Nederlands nl 9.03 1,803,406 43,778,922 3,288,514
107 Bashkir Башҡорт ba 8.74 33,333 457,567 72,584
108 Kazakh Қазақша kk 8.38 209,665 2,276,754 491,759
109 Gujarati ગુજરાતી gu 8.31 25,634 380,337 53,294
110 Banyumasan Basa Banyumasan map-bms 7.74 13,058 203,116 26,079
111 Samogitian Žemaitėška bat-smg 7.08 13,695 335,005 23,309
112 Irish Gaeilge ga 6.47 32,494 770,505 54,476
113 Tajik Тоҷикӣ tg 6.17 30,518 459,814 57,281
114 Scottish Gaelic Gàidhlig gd 5.13 18,748 497,169 29,007
115 Mazandarani مَزِروني mzn 5.39 12,015 129,631 24,025
116 Occitan Occitan oc 5.31 88,014 2,090,240 140,640
117 Yoruba Yorùbá yo 5.28 31,055 546,332 53,343
118 Ido Ido io 5.05 26,173 925,333 38,115
119 Chuvash Чăваш cv 4.38 30,287 548,243 49,300
120 Cebuano Sinugboanong Binisaya ceb 3.54 1,208,473 5,768,677 2,790,183
121 Waray-Waray Winaray war 3.54 1,258,858 6,248,635 2,862,831
122 Piedmontese Piemontèis pms 1.98 63,671 848,863 93,398
123 Kirghiz Кыргызча ky 1.36 27,459 187,809 42,764
124 Burmese language မ္ရန္‌မာစာ my 1.13 32,462 222,879 48,610
125 Buginese Basa Ugi bug 0.91 14,089 197,069 18,182
126 Western Panjabi شاہ مکھی پنجابی pnb 0.46 33,232 415,200 40,228
127 Haitian Krèyol ayisyen ht 0.29 53,066 706,908 61,432
128 Chechen Нохчийн ce 0.16 73,995 422,797 87,673
129 Minangkabau Bahaso Minangkabau min 0.002 221,154 483,013 227,854
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 886 89 192 20 69 105 9 124 176 115 11 130 32 44 31 37 209 97 15 39 98 18 19 70 65 257 196 84 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.