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 894 = 21.54 × 41.51 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 652 = 49.61 × 13.14.

The smallest depth has Minangkabau Wikipedia which has the depth 0.002 = 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 22 February 2015.

No. Language Language (local) Wiki Depth Articles Edits Total
1 English English en 894.24 4,729,591 758,375,853 35,200,101
2 Macedonian Македонски mk 477.01 81,050 3,398,172 1,078,126
3 Bengali বাংলা bn 469.69 34,861 1,842,606 376,274
4 Serbo-Croatian Srpskohrvatski / Српскохрватски sh 354.77 278,134 9,132,093 3,539,655
5 Malayalam മലയാളം ml 289.49 38,042 2,197,983 261,146
6 Egyptian Arabic مصرى arz 273.91 13,452 669,593 99,103
7 Hebrew עברית he 258.39 166,411 17,505,686 702,126
8 Thai ไทย th 253.57 92,909 6,138,639 525,969
9 Persian فارسی fa 208.81 445,768 19,637,395 2,936,791
10 Turkish Türkçe tr 206.41 242,062 16,089,393 1,186,432
11 Arabic العربية ar 203.43 350,024 17,709,218 2,047,571
12 French Français fr 196.28 1,594,671 114,578,050 7,192,040
13 Spanish Español es 177.08 1,159,063 85,749,267 4,813,242
14 Bosnian Bosanski bs 172.45 58,418 2,767,100 318,811
15 Sorani کوردی ckb 139.99 15,228 484,863 94,964
16 Urdu اردو ur 134.33 67,273 4,134,242 264,484
17 Chinese 中文 zh 133.58 813,008 35,847,001 3,920,432
18 Simple English Simple English simple 126.43 120,775 12,410,793 348,261
19 Portuguese Português pt 124.21 866,744 42,489,876 3,728,121
20 Russian Русский ru 116.29 1,193,990 81,228,964 4,079,415
21 Italian Italiano it 107.12 1,175,995 76,358,795 3,941,221
22 Romanian Română ro 94.74 267,310 9,462,924 1,189,924
23 Latvian Latviešu lv 93.67 58,975 2,366,587 241,192
24 Hungarian Magyar hu 92.46 284,782 16,339,960 942,417
25 Ossetian Иронау os 92.83 10,139 479,713 37,423
26 German Deutsch de 88.31 1,818,772 144,808,622 4,992,234
27 Korean 한국어 ko 85.73 305,260 15,526,180 1,034,994
28 Aragonese Aragonés an 81.67 30,500 1,600,547 99,080
29 Venetian Vèneto vec 77.55 10,518 583,510 32,316
30 Bavarian Boarisch bar 74.5 10,673 448,952 37,185
31 Danish Dansk da 69.65 196,240 8,330,247 655,726
32 Japanese 日本語 ja 69.39 948,967 55,597,329 2,686,773
33 Indonesian Bahasa Indonesia id 68.74 355,744 9,779,941 1,517,670
34 Serbian Српски sr 65.38 315,611 11,093,863 1,130,120
35 Marathi मराठी mr 65.09 41,397 1,340,907 154,912
36 Welsh Cymraeg cy 63.36 63,306 5,252,610 147,850
37 Sinhalese සිංහල si 62.52 12,379 338,512 49,997
38 Hindi हिन्दी hi 60.9 117,389 2,813,613 505,817
39 Uzbek O‘zbek uz 59.06 127,862 2,327,897 645,122
40 Yiddish ייִדיש yi 57.3 11,847 511,027 35,474
41 Kannada ಕನ್ನಡ kn 45.38 17,889 492,152 59,946
42 Finnish Suomi fi 44.19 367,033 15,563,604 978,908
43 Sakha Саха тыла sah 43.59 10,757 337,535 32,945
44 Icelandic Íslenska is 43.47 38,728 1,539,559 105,603
45 Greek Ελληνικά el 41.18 118,602 5,223,744 301,433
46 Georgian ქართული ka 39 89,844 2,959,879 254,307
47 Czech Čeština cs 39.02 316,008 12,695,429 816,666
48 Tamil தமிழ் ta 37.49 67,121 1,893,312 201,045
49 Tagalog Tagalog tl 36.9 63,239 1,532,964 203,056
50 Ukrainian Українська uk 36.87 555,115 15,880,553 1,637,542
51 Mongolian Монгол mn 35.08 14,162 439,928 39,199
52 Quechua Runa Simi qu 34.9 19,249 655,462 50,958
53 Afrikaans Afrikaans af 34.17 34,647 1,385,005 84,747
54 Sanskrit संस्कृतम् sa 34.4 10,674 292,319 31,090
55 Croatian Hrvatski hr 33.71 152,061 4,629,830 417,010
56 Armenian Հայերեն hy 33.45 147,094 2,864,719 503,888
57 Swahili Kiswahili sw 32.3 28,257 984,414 71,557
58 Lombard Lumbaart lmo 32.29 31,604 1,050,816 81,674
59 Belarusian (Taraškievica) Беларуская (тарашкевіца) be-x-old 32.28 55,503 1,839,550 143,609
60 Cantonese 粵語 zh-yue 31.75 35,136 948,450 99,154
61 Min Nan Bân-lâm-gú zh-min-nan 31.82 12,686 468,343 31,136
62 Norwegian (Bokmål) Norsk (Bokmål) no 31.54 407,891 13,678,352 1,039,358
63 Catalan Català ca 30.82 453,647 15,340,391 1,140,256
64 Azerbaijani Azərbaycanca az 30.6 100,137 3,383,771 251,054
65 Estonian Eesti et 30.54 131,169 4,241,852 334,804
66 Low Saxon Plattdüütsch nds 30.37 22,690 768,444 56,633
67 Luxembourgish Lëtzebuergesch lb 29.63 43,060 1,887,923 95,878
68 Albanian Shqip sq 26.85 52,230 1,638,408 127,826
69 Kurdish Kurdî ku 25.88 20,965 665,657 50,273
70 Telugu తెలుగు te 25.97 61,350 1,409,812 169,879
71 Alemannic Alemannisch als 25.32 18,456 629,678 42,619
72 Basque Euskara eu 25.25 206,311 4,879,019 556,385
73 Bishnupriya Manipuri বিষ্ণুপ্রিয়া মণিপুরী bpy 23.28 25,131 803,975 57,582
74 Neapolitan Nnapulitano nap 23.18 14,353 690,018 28,364
75 Faroese Føroyskt fo 23.29 11,023 315,197 26,425
76 Walloon Walon wa 22.21 13,745 320,234 35,229
77 Tatar Татарча tt 22.1 66,327 2,088,439 149,858
78 Bulgarian Български bg 21.99 189,229 6,905,397 403,798
79 Slovenian Slovenščina sl 21.61 144,702 4,543,409 324,458
80 Belarusian Беларуская be 21.18 80,917 2,014,576 197,518
81 Vietnamese Tiếng Việt vi 20.19 1,113,278 20,690,502 3,026,216
82 Sicilian Sicilianu scn 20.02 25,009 742,493 55,643
83 Polish Polski pl 19.96 1,096,074 41,979,099 2,223,004
84 Galician Galego gl 20.05 120,253 3,562,117 267,920
85 Amharic አማርኛ am 19.93 16,257 333,640 42,011
86 West Frisian Frysk fy 19.61 31,481 769,394 75,002
87 Lithuanian Lietuvių lt 19.37 170,510 4,897,346 379,408
88 Punjabi ਪੰਜਾਬੀ pa 18.98 16,894 230,331 51,791
89 Nahuatl Nāhuatl nah 18.38 10,309 400,768 20,241
90 Asturian Asturianu ast 18.02 20,129 792,259 39,115
91 Norwegian (Nynorsk) Nynorsk nn 17.84 119,502 2,906,550 274,674
92 Scots Scots sco 17.7 30,215 463,083 84,526
93 Slovak Slovenčina sk 17.62 202,769 5,991,067 431,127
94 Esperanto Esperanto eo 17.35 210,795 5,697,006 460,391
95 Breton Brezhoneg br 16.94 53,024 1,702,647 107,994
96 Sundanese Basa Sunda su 16.01 17,844 463,821 38,385
97 Volapük Volapük vo 15.3 119,923 3,301,911 248,639
98 Nepali नेपाली ne 15.27 27,311 458,229 68,612
99 Malay Bahasa Melayu ms 14.1 273,058 3,912,253 709,691
100 Newari नेवारी new 12.54 71,525 826,080 194,371
101 Javanese Basa Jawa jv 11.44 48,419 911,577 103,652
102 Interlingua Interlingua ia 11.46 14,394 552,521 24,698
103 Swedish Svenska sv 11.29 1,957,338 29,488,477 4,536,980
104 Latin Latina Latina 10.63 113,562 2,937,064 213,377
105 Malagasy Malagasy mg 10.44 79,391 787,762 212,652
106 Dutch Nederlands nl 10.23 1,812,592 44,468,744 3,420,060
107 Bashkir Башҡорт ba 9.83 33,953 476,648 76,631
108 Gujarati ગુજરાતી gu 8.87 25,749 383,763 54,710
109 Kazakh Қазақша kk 8.33 212,270 2,311,418 496,036
110 Tajik Тоҷикӣ tg 8.05 30,759 578,791 58,508
111 Banyumasan Basa Banyumasan map-bms 7.75 13,050 203,380 26,049
112 Samogitian Žemaitėška bat-smg 6.99 13,802 336,354 23,434
113 Irish Gaeilge ga 6.28 33,070 775,059 55,181
114 Scottish Gaelic Gàidhlig gd 6.52 18,322 504,672 29,661
115 Mazandarani مَزِروني mzn 5.45 12,051 130,204 24,170
116 Occitan Occitan oc 5.32 88,474 2,095,701 141,512
117 Yoruba Yorùbá yo 5.28 31,040 546,767 53,319
118 Ido Ido io 5.11 26,317 926,670 38,429
119 Chuvash Чăваш cv 4.51 30,406 559,480 49,644
120 Waray-Waray Winaray war 3.56 1,259,051 6,258,861 2,867,837
121 Cebuano Sinugboanong Binisaya ceb 3.54 1,208,566 5,769,603 2,790,274
122 Piedmontese Piemontèis pms 2.02 63,747 850,929 93,811
123 Kirghiz Кыргызча ky 1.39 27,526 189,180 42,964
124 Burmese language မ္ရန္‌မာစာ my 1.22 32,965 229,301 49,996
125 Buginese Basa Ugi bug 0.93 14,090 197,231 18,211
126 Western Panjabi شاہ مکھی پنجابی pnb 0.46 33,301 416,411 40,369
127 Haitian Krèyol ayisyen ht 0.3 52,929 707,999 61,465
128 Chechen Нохчийн ce 0.15 80,424 454,466 94,523
129 Minangkabau Bahaso Minangkabau min 0.002 221,168 483,398 227,917
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 894 88 196 20 69 107 10 124 177 116 11 134 32 44 31 37 206 95 15 39 92 17 18 70 69 258 203 86 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.