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 872 = 21.27 × 41.02 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 793 = 48.94 × 16.2.

The smallest depth has Minangkabau Wikipedia which has the depth 0.0038 = 2.8 × 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 19 March 2015.

No. Language Language (local) Wiki Depth Articles Edits Total
1 English English en 872.29 4,848,935 763,554,239 35,903,459
2 Macedonian Македонски mk 474.58 81,493 3,413,930 1,080,032
3 Bengali বাংলা bn 486.67 35,043 1,878,948 384,963
4 Serbo-Croatian Srpskohrvatski / Српскохрватски sh 208.38 394,719 9,979,634 4,003,790
5 Malayalam മലയാളം ml 283.19 38,724 2,212,408 263,707
6 Egyptian Arabic مصرى arz 263.78 13,734 674,428 99,342
7 Hebrew עברית he 253.79 170,433 17,636,164 718,430
8 Thai ไทย th 263.19 93,773 6,215,856 543,699
9 Turkish Türkçe tr 223.61 244,463 16,278,553 1,262,522
10 Persian فارسی fa 211.98 448,203 19,786,611 2,981,141
11 Arabic العربية ar 209.07 353,069 18,093,431 2,086,842
12 French Français fr 201.01 1,608,350 115,738,323 7,357,756
13 Spanish Español es 187.36 1,167,929 86,565,659 5,016,283
14 Bosnian Bosanski bs 168.44 59,303 2,780,028 320,726
15 Urdu اردو ur 181.96 66,669 4,226,505 310,370
16 Sorani کوردی ckb 139.6 15,285 486,497 95,157
17 Chinese 中文 zh 142.8 810,569 36,316,057 4,042,058
18 Simple English Simple English simple 172.01 112,119 12,458,206 363,190
19 Portuguese Português pt 127.38 869,632 42,826,426 3,789,097
20 Russian Русский ru 120.34 1,208,575 82,010,224 4,213,868
21 Italian Italiano it 106.66 1,190,211 76,990,702 3,987,642
22 Latvian Latviešu lv 93.74 59,861 2,385,940 245,935
23 Ossetian Иронау os 93.51 10,137 479,981 37,558
24 Hungarian Magyar hu 93.8 290,772 16,489,215 975,838
25 Romanian Română ro 90.02 284,727 9,619,826 1,263,908
26 German Deutsch de 97.86 1,799,982 145,938,536 5,142,481
27 Korean 한국어 ko 86.47 309,570 15,687,020 1,056,681
28 Aragonese Aragonés an 81.54 30,566 1,601,675 99,284
29 Venetian Vèneto vec 77.85 10,544 585,288 32,450
30 Bavarian Boarisch bar 76.76 10,657 452,340 37,563
31 Danish Dansk da 72.88 197,501 8,398,959 675,757
32 Japanese 日本語 ja 69.88 959,923 55,995,156 2,732,526
33 Marathi मराठी mr 71.41 41,508 1,362,820 162,703
34 Indonesian Bahasa Indonesia id 71.4 357,326 10,054,092 1,538,444
35 Serbian Српски sr 65.87 317,273 11,171,433 1,139,713
36 Welsh Cymraeg cy 63.77 63,438 5,257,269 148,607
37 Sinhalese සිංහල si 84.76 11,150 341,150 50,739
38 Hindi हिन्दी hi 86.48 103,329 2,832,230 511,822
39 Uzbek O‘zbek uz 59.59 127,750 2,337,435 646,338
40 Yiddish ייִדיש yi 49.4 12,532 514,895 35,738
41 Kannada ಕನ್ನಡ kn 57.78 17,051 513,402 62,141
42 Finnish Suomi fi 46.22 369,219 15,655,944 1,005,319
43 Greek Ελληνικά el 65.84 105,565 5,284,863 314,538
44 Icelandic Íslenska is 44 39,181 1,553,883 107,562
45 Sakha Саха тыла sah 50.71 10,307 338,154 33,360
46 Czech Čeština cs 41.52 318,182 12,812,389 844,604
47 Mongolian Монгол mn 40.96 14,159 445,704 41,967
48 Georgian ქართული ka 37.63 92,108 2,982,752 258,404
49 Tamil தமிழ் ta 40.41 66,138 1,913,974 203,083
50 Ukrainian Українська uk 37.2 561,043 16,099,670 1,659,794
51 Tagalog Tagalog tl 37.83 63,230 1,540,331 205,171
52 Afrikaans Afrikaans af 35.39 34,918 1,397,919 86,624
53 Sanskrit संस्कृतम् sa 45.02 9,938 294,693 31,866
54 Quechua Runa Simi qu 34.92 19,295 656,249 51,114
55 Croatian Hrvatski hr 34.99 152,485 4,658,326 424,884
56 Norwegian (Bokmål) Norsk (Bokmål) no 33.32 408,892 13,782,083 1,064,999
57 Armenian Հայերեն hy 32.42 153,156 2,972,670 516,756
58 Belarusian (Taraškievica) Беларуская (тарашкевіца) be-x-old 32.1 55,936 1,852,254 144,427
59 Lombard Lumbaart lmo 32.39 31,674 1,051,852 82,003
60 Swahili Kiswahili sw 32.75 28,330 987,011 72,171
61 Cantonese 粵語 zh-yue 32.81 35,734 958,959 102,724
62 Estonian Eesti et 31.32 132,241 4,272,771 341,454
63 Catalan Català ca 30.87 457,661 15,462,794 1,151,515
64 Azerbaijani Azərbaycanca az 32 98,888 3,419,824 250,091
65 Low Saxon Plattdüütsch nds 30.79 22,864 771,229 57,505
66 Luxembourgish Lëtzebuergesch lb 29.88 43,314 1,896,269 96,806
67 Min Nan Bân-lâm-gú zh-min-nan 30.31 13,102 469,629 31,902
68 Telugu తెలుగు te 31.05 60,054 1,456,626 176,565
69 Albanian Shqip sq 34.42 50,414 1,655,788 134,810
70 Kurdish Kurdî ku 26.84 20,924 667,455 50,846
71 Alemannic Alemannisch als 26.91 18,560 638,687 43,760
72 Basque Euskara eu 25.39 207,033 4,897,418 559,739
73 Bulgarian Български bg 23.85 190,405 6,966,583 418,270
74 Faroese Føroyskt fo 24.1 11,084 317,512 26,929
75 Neapolitan Nnapulitano nap 24.32 14,268 690,735 28,579
76 Bishnupriya Manipuri বিষ্ণুপ্রিয়া মণিপুরী bpy 23.54 25,060 804,114 57,601
77 Tatar Татарча tt 22.19 66,605 2,094,501 150,788
78 Walloon Walon wa 22.78 13,680 320,609 35,362
79 Slovenian Slovenščina sl 24.07 145,204 4,581,256 338,988
80 Belarusian Беларуская be 21.3 81,869 2,039,453 200,259
81 Vietnamese Tiếng Việt vi 19.56 1,131,678 20,975,326 3,035,953
82 Galician Galego gl 20.4 121,146 3,609,780 271,071
83 West Frisian Frysk fy 20.21 31,596 774,490 76,122
84 Amharic አማርኛ am 52.05 11,852 336,408 42,103
85 Polish Polski pl 21.26 1,102,699 42,297,179 2,284,279
86 Sicilian Sicilianu scn 20.28 25,086 743,915 56,114
87 Lithuanian Lietuvių lt 19.56 171,099 4,926,497 381,719
88 Punjabi ਪੰਜਾਬੀ pa 22.1 16,468 234,752 53,382
89 Nahuatl Nāhuatl nah 19.11 10,370 403,135 20,625
90 Asturian Asturianu ast 18.32 20,137 793,071 39,331
91 Norwegian (Nynorsk) Nynorsk nn 18.12 120,231 2,917,918 278,286
92 Scots Scots sco 18.01 30,487 468,135 85,914
93 Slovak Slovenčina sk 18.05 203,356 6,031,161 435,559
94 Esperanto Esperanto eo 17.28 212,946 5,720,068 465,460
95 Breton Brezhoneg br 16.95 53,465 1,710,457 109,040
96 Sundanese Basa Sunda su 15.93 17,918 464,499 38,509
97 Nepali नेपाली ne 19.46 25,734 466,762 69,557
98 Volapük Volapük vo 15.27 120,079 3,302,580 248,888
99 Malay Bahasa Melayu ms 14.98 273,228 3,947,913 727,005
100 Newari नेवारी new 12.2 72,347 827,524 195,026
101 Interlingua Interlingua ia 11.94 14,392 553,157 24,957
102 Javanese Basa Jawa jv 11.62 48,448 913,166 104,265
103 Swedish Svenska sv 11.5 1,960,674 29,659,683 4,571,205
104 Latin Latina Latina 10.68 114,732 2,955,762 216,114
105 Malagasy Malagasy mg 10.73 79,270 805,114 212,782
106 Dutch Nederlands nl 10.69 1,816,424 44,749,700 3,470,499
107 Bashkir Башҡорт ba 10.23 34,284 485,724 78,300
108 Scottish Gaelic Gàidhlig gd 23.6 12,871 508,732 27,376
109 Gujarati ગુજરાતી gu 9.62 25,485 386,915 55,391
110 Kazakh Қазақша kk 8.68 210,196 2,337,431 495,358
111 Banyumasan Basa Banyumasan map-bms 8.17 12,928 204,833 26,123
112 Tajik Тоҷикӣ tg 7.84 31,461 582,638 59,646
113 Samogitian Žemaitėška bat-smg 7.11 13,812 338,920 23,512
114 Irish Gaeilge ga 6.22 33,611 783,896 56,016
115 Mazandarani مَزِروني mzn 5.83 11,986 131,220 24,483
116 Occitan Occitan oc 5.48 88,176 2,098,642 141,837
117 Yoruba Yorùbá yo 5.34 31,025 547,057 53,419
118 Ido Ido io 5.98 25,798 929,111 38,663
119 Chuvash Чăваш cv 4.42 31,006 561,842 50,551
120 Waray-Waray Winaray war 3.57 1,259,033 6,260,362 2,868,578
121 Cebuano Sinugboanong Binisaya ceb 3.54 1,208,638 5,770,527 2,790,508
122 Piedmontese Piemontèis pms 2.04 63,747 851,894 93,999
123 Kirghiz Кыргызча ky 1.5 27,632 191,366 43,860
124 Burmese language မ္ရန္‌မာစာ my 2.03 30,928 233,080 51,652
125 Buginese Basa Ugi bug 0.94 14,102 197,446 18,268
126 Western Panjabi شاہ مکھی پنجابی pnb 0.45 33,683 418,168 40,733
127 Haitian Krèyol ayisyen ht 0.35 52,442 708,723 61,617
128 Chechen Нохчийн ce 0.16 80,789 474,280 95,308
129 Minangkabau Bahaso Minangkabau min 0.004 221,587 643,387 229,768
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 872 98 201 21 70 107 11 127 187 120 12 143 33 46 31 37 224 90 15 42 94 17 18 73 71 254 209 86 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.