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 913 = 21.27 × 42.91 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 667 = 48.91 × 13.64.

The smallest depth has Minangkabau Wikipedia which has the depth 0.004 = 2.65 × 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 19 March 2015.

No. Language Language (local) Wiki Depth Articles Edits Total
1 English English en 912.57 4,750,675 762,892,477 35,868,975
2 Macedonian Македонски mk 475.08 81,424 3,412,204 1,079,773
3 Bengali বাংলা bn 474.6 35,356 1,873,229 384,170
4 Serbo-Croatian Srpskohrvatski / Српскохрватски sh 195.59 394,517 9,590,493 3,923,524
5 Malayalam മലയാളം ml 286.74 38,487 2,211,377 263,418
6 Egyptian Arabic مصرى arz 267.77 13,638 674,001 99,296
7 Hebrew עברית he 265.71 167,286 17,619,609 717,597
8 Thai ไทย th 264.04 93,526 6,207,003 543,039
9 Turkish Türkçe tr 223.81 243,928 16,262,443 1,259,484
10 Persian فارسی fa 212.11 447,792 19,772,004 2,979,370
11 Arabic العربية ar 205.8 354,480 18,043,203 2,081,837
12 French Français fr 201.98 1,603,283 115,603,368 7,347,887
13 Spanish Español es 187.85 1,165,725 86,474,405 5,012,349
14 Bosnian Bosanski bs 169.68 59,090 2,778,915 320,477
15 Urdu اردو ur 168.13 68,618 4,223,232 309,462
16 Sorani کوردی ckb 139.61 15,281 486,369 95,135
17 Chinese 中文 zh 139.29 817,174 36,262,174 4,033,894
18 Simple English Simple English simple 135.97 121,351 12,455,067 362,877
19 Portuguese Português pt 127.5 868,634 42,789,630 3,786,251
20 Russian Русский ru 121.74 1,201,892 81,909,047 4,207,507
21 Italian Italiano it 108.92 1,180,282 76,915,715 3,983,480
22 Latvian Latviešu lv 94.32 59,615 2,382,360 245,458
23 Ossetian Иронау os 93.12 10,151 479,961 37,549
24 Hungarian Magyar hu 95.13 289,064 16,473,724 974,934
25 Romanian Română ro 90.6 283,026 9,607,523 1,257,776
26 German Deutsch de 93.1 1,827,986 145,808,221 5,139,348
27 Korean 한국어 ko 86.75 308,658 15,666,554 1,054,490
28 Aragonese Aragonés an 81.8 30,528 1,601,516 99,266
29 Venetian Vèneto vec 78.19 10,523 585,099 32,430
30 Bavarian Boarisch bar 75.61 10,706 451,922 37,535
31 Danish Dansk da 72.83 197,429 8,393,834 675,331
32 Japanese 日本語 ja 71.24 953,134 55,942,775 2,730,516
33 Marathi मराठी mr 71.09 41,560 1,362,365 162,626
34 Indonesian Bahasa Indonesia id 71.27 356,824 10,019,641 1,536,496
35 Serbian Српски sr 66.18 316,567 11,163,860 1,139,212
36 Welsh Cymraeg cy 63.92 63,374 5,256,803 148,551
37 Sinhalese සිංහල si 63.52 12,447 340,819 50,712
38 Hindi हिन्दी hi 62.08 117,543 2,830,519 511,096
39 Uzbek O‘zbek uz 59.36 127,921 2,336,639 646,227
40 Yiddish ייִדיש yi 57.66 11,908 514,773 35,731
41 Kannada ಕನ್ನಡ kn 50.06 17,942 512,756 62,130
42 Finnish Suomi fi 46.4 368,495 15,646,284 1,004,507
43 Greek Ελληνικά el 44.59 119,454 5,277,671 314,020
44 Icelandic Íslenska is 44.42 38,977 1,550,610 107,319
45 Sakha Саха тыла sah 44.24 10,791 338,100 33,324
46 Czech Čeština cs 41.46 317,992 12,800,351 843,679
47 Mongolian Монгол mn 39.08 14,370 445,371 41,933
48 Georgian ქართული ka 38.23 91,425 2,979,216 257,669
49 Tamil தமிழ் ta 37.81 67,519 1,909,956 202,811
50 Ukrainian Українська uk 37.24 559,972 16,073,242 1,657,194
51 Tagalog Tagalog tl 37.69 63,273 1,537,713 205,170
52 Afrikaans Afrikaans af 35.48 34,849 1,396,558 86,517
53 Sanskrit संस्कृतम् sa 35.92 10,716 294,477 31,831
54 Quechua Runa Simi qu 35.12 19,254 656,072 51,099
55 Croatian Hrvatski hr 34.7 152,795 4,655,647 424,621
56 Norwegian (Bokmål) Norsk (Bokmål) no 32.91 410,125 13,772,400 1,064,129
57 Armenian Հայերեն hy 32.28 152,436 2,940,805 514,795
58 Belarusian (Taraškievica) Беларуская (тарашкевіца) be-x-old 32.34 55,793 1,851,349 144,405
59 Lombard Lumbaart lmo 32.34 31,682 1,051,790 81,985
60 Swahili Kiswahili sw 32.76 28,319 986,554 72,152
61 Cantonese 粵語 zh-yue 33.01 35,610 958,107 102,539
62 Estonian Eesti et 31.22 132,214 4,268,752 341,032
63 Catalan Català ca 30.82 457,270 15,438,487 1,150,085
64 Azerbaijani Azərbaycanca az 30.5 100,241 3,416,133 249,967
65 Low Saxon Plattdüütsch nds 30.41 22,919 770,787 57,412
66 Luxembourgish Lëtzebuergesch lb 29.91 43,278 1,895,396 96,754
67 Min Nan Bân-lâm-gú zh-min-nan 30.13 13,121 469,520 31,890
68 Telugu తెలుగు te 28.62 61,584 1,453,705 176,339
69 Albanian Shqip sq 30.25 52,407 1,652,903 134,679
70 Kurdish Kurdî ku 26.37 21,028 667,243 50,832
71 Alemannic Alemannisch als 25.89 18,746 638,075 43,712
72 Basque Euskara eu 25.39 206,877 4,892,223 559,380
73 Bulgarian Български bg 23.9 190,138 6,960,468 417,894
74 Faroese Føroyskt fo 23.95 11,091 317,351 26,891
75 Neapolitan Nnapulitano nap 23.64 14,367 690,699 28,575
76 Bishnupriya Manipuri বিষ্ণুপ্রিয়া মণিপুরী bpy 23.31 25,130 804,103 57,604
77 Tatar Татарча tt 22.29 66,480 2,093,611 150,695
78 Walloon Walon wa 22.33 13,761 320,575 35,359
79 Slovenian Slovenščina sl 24.07 145,135 4,579,581 338,817
80 Belarusian Беларуская be 21.39 81,655 2,037,076 199,965
81 Vietnamese Tiếng Việt vi 20.54 1,114,038 20,963,451 3,035,341
82 Galician Galego gl 20.45 120,907 3,606,917 270,705
83 West Frisian Frysk fy 20.17 31,592 774,032 76,066
84 Amharic አማርኛ am 20.09 16,280 336,344 42,094
85 Polish Polski pl 21.24 1,101,958 42,253,678 2,282,113
86 Sicilian Sicilianu scn 20.15 25,125 743,849 56,101
87 Lithuanian Lietuvių lt 19.55 170,998 4,924,819 381,405
88 Punjabi ਪੰਜਾਬੀ pa 19.38 17,174 234,276 53,210
89 Nahuatl Nāhuatl nah 18.96 10,381 402,928 20,602
90 Asturian Asturianu ast 18.25 20,154 792,988 39,328
91 Norwegian (Nynorsk) Nynorsk nn 18.18 120,063 2,917,195 278,141
92 Scots Scots sco 17.93 30,502 467,892 85,806
93 Slovak Slovenčina sk 18.04 203,286 6,027,010 435,297
94 Esperanto Esperanto eo 17.35 212,549 5,717,324 465,027
95 Breton Brezhoneg br 17 53,377 1,709,427 108,925
96 Sundanese Basa Sunda su 16.1 17,866 464,450 38,504
97 Nepali नेपाली ne 15.56 27,535 466,041 69,477
98 Volapük Volapük vo 15.27 120,067 3,302,533 248,877
99 Malay Bahasa Melayu ms 14.27 273,268 3,932,775 712,742
100 Newari नेवारी new 12.46 71,864 827,473 194,987
101 Interlingua Interlingua ia 11.88 14,408 553,101 24,959
102 Javanese Basa Jawa jv 11.52 48,440 912,720 103,931
103 Swedish Svenska sv 11.5 1,960,216 29,641,092 4,569,909
104 Latin Latina Latina 10.71 114,491 2,953,661 215,752
105 Malagasy Malagasy mg 10.68 79,394 805,081 212,779
106 Dutch Nederlands nl 10.68 1,815,887 44,718,731 3,468,873
107 Bashkir Башҡорт ba 10.15 34,252 484,702 78,027
108 Scottish Gaelic Gàidhlig gd 9.61 15,985 508,354 27,517
109 Gujarati ગુજરાતી gu 9.21 25,760 386,743 55,328
110 Kazakh Қазақша kk 8.3 212,747 2,333,305 494,967
111 Banyumasan Basa Banyumasan map-bms 7.83 13,050 203,817 26,126
112 Tajik Тоҷикӣ tg 7.83 31,450 582,445 59,603
113 Samogitian Žemaitėška bat-smg 7.02 13,845 338,832 23,508
114 Irish Gaeilge ga 6.2 33,539 777,969 55,922
115 Mazandarani مَزِروني mzn 5.6 12,088 131,095 24,435
116 Occitan Occitan oc 5.33 88,618 2,098,360 141,809
117 Yoruba Yorùbá yo 5.32 31,046 547,039 53,425
118 Ido Ido io 5.23 26,358 929,037 38,651
119 Chuvash Чăваш cv 4.36 31,061 561,636 50,516
120 Waray-Waray Winaray war 3.57 1,259,084 6,260,307 2,868,576
121 Cebuano Sinugboanong Binisaya ceb 3.54 1,208,600 5,770,282 2,790,474
122 Piedmontese Piemontèis pms 2.04 63,756 851,486 93,975
123 Kirghiz Кыргызча ky 1.5 27,640 190,883 43,848
124 Burmese language မ္ရန္‌မာစာ my 1.36 33,113 231,958 51,274
125 Buginese Basa Ugi bug 0.94 14,106 197,440 18,272
126 Western Panjabi شاہ مکھی پنجابی pnb 0.49 33,379 417,899 40,675
127 Haitian Krèyol ayisyen ht 0.31 52,935 708,676 61,615
128 Chechen Нохчийн ce 0.17 80,462 466,016 95,254
129 Minangkabau Bahaso Minangkabau min 0.004 221,153 609,588 229,769
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 913 93 202 21 71 109 11 128 188 122 11 139 33 46 31 37 224 91 15 41 95 17 18 73 71 266 206 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.