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 × 40.94 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 21 December 2014.

No. Language Language (local) Wiki Depth Articles Edits Total
1 English English en 885.85 4,674,830 748,406,483 34,585,203
2 Bengali বাংলা bn 488.13 33,417 1,808,861 365,122
3 Macedonian Македонски mk 485.35 80,087 3,378,918 1,075,518
4 Serbo-Croatian Srpskohrvatski / Српскохрватски sh 306.32 275,465 8,738,293 3,187,143
5 Malayalam മലയാളം ml 289.94 37,536 2,176,765 257,263
6 Egyptian Arabic مصرى arz 257.59 13,249 659,942 93,128
7 Hebrew עברית he 257.08 164,479 17,255,161 692,986
8 Thai ไทย th 252.23 91,298 6,056,262 513,507
9 Turkish Türkçe tr 209.5 237,691 15,890,726 1,172,012
10 Persian فارسی fa 204.17 438,624 19,146,288 2,861,595
11 Arabic العربية ar 196.46 342,975 17,247,035 1,966,041
12 French Français fr 192.35 1,572,648 112,460,874 7,023,181
13 Bosnian Bosanski bs 182.47 56,019 2,721,044 312,432
14 Spanish Español es 176.09 1,145,562 84,387,632 4,753,469
15 Urdu اردو ur 149.63 63,434 4,098,351 258,193
16 Sorani کوردی ckb 138.15 15,082 477,572 93,535
17 Chinese 中文 zh 130.19 801,399 35,065,498 3,819,058
18 Simple English Simple English simple 127.44 118,769 12,354,149 341,781
19 Portuguese Português pt 123.69 857,112 41,949,537 3,680,667
20 Russian Русский ru 114.78 1,172,363 79,788,756 3,976,252
21 Italian Italiano it 105.12 1,164,085 75,045,912 3,876,707
22 Hungarian Magyar hu 97.91 273,627 16,105,299 921,157
23 Romanian Română ro 96.93 256,580 9,314,117 1,140,547
24 Ossetian Иронау os 94.31 10,003 477,934 37,049
25 Latvian Latviešu lv 93.91 57,669 2,323,908 235,611
26 German Deutsch de 89.18 1,788,681 142,588,495 4,929,405
27 Korean 한국어 ko 84.05 298,269 15,159,192 1,000,920
28 Aragonese Aragonés an 81.94 30,348 1,597,314 98,602
29 Venetian Vèneto vec 76.91 10,494 581,230 32,133
30 Bavarian Boarisch bar 74.38 10,574 443,062 36,888
31 Danish Dansk da 69.84 193,927 8,247,547 648,309
32 Japanese 日本語 ja 69.06 938,601 54,905,337 2,653,316
33 Sinhalese සිංහල si 66.99 11,708 331,428 48,285
34 Serbian Српски sr 65.1 312,547 10,944,313 1,118,836
35 Indonesian Bahasa Indonesia id 65.11 352,158 9,346,276 1,484,750
36 Marathi मराठी mr 64.99 40,976 1,331,944 152,890
37 Welsh Cymraeg cy 64.95 60,861 5,233,357 141,515
38 Yiddish ייִדיש yi 59.38 11,616 508,703 35,143
39 Hindi हिन्दी hi 58.54 116,540 2,768,044 492,733
40 Uzbek O‘zbek uz 58.3 127,779 2,303,070 643,511
41 Kannada ಕನ್ನಡ kn 45.13 17,281 476,067 57,699
42 Finnish Suomi fi 44.26 362,169 15,385,674 965,904
43 Sakha Саха тыла sah 43.63 10,671 336,091 32,636
44 Icelandic Íslenska is 43.43 38,471 1,532,518 104,761
45 Greek Ελληνικά el 43.38 113,358 5,108,987 291,800
46 Georgian ქართული ka 39.69 87,213 2,900,152 247,841
47 Czech Čeština cs 38.83 310,649 12,485,513 800,897
48 Min Nan Bân-lâm-gú zh-min-nan 36.88 11,610 465,088 29,311
49 Tamil தமிழ் ta 37.44 65,433 1,851,295 195,552
50 Tagalog Tagalog tl 36.76 63,179 1,528,202 202,686
51 Ukrainian Українська uk 36.64 543,492 15,509,228 1,600,209
52 Sanskrit संस्कृतम् sa 35.64 10,250 288,019 29,998
53 Mongolian Монгол mn 35.34 13,850 432,595 38,371
54 Quechua Runa Simi qu 34.85 19,226 654,739 50,862
55 Afrikaans Afrikaans af 34.62 33,888 1,367,915 83,007
56 Croatian Hrvatski hr 34.06 150,371 4,598,035 413,570
57 Swahili Kiswahili sw 34.01 27,532 980,768 70,619
58 Armenian Հայերեն hy 33.47 142,119 2,749,580 488,800
59 Cantonese 粵語 zh-yue 33.17 33,749 935,783 96,002
60 Belarusian (Taraškievica) Беларуская (тарашкевіца) be-x-old 32.42 55,130 1,829,552 142,844
61 Malagasy Malagasy mg 32.12 47,094 730,952 179,270
62 Lombard Lumbaart lmo 32.09 31,483 1,049,041 81,056
63 Norwegian (Bokmål) Norsk (Bokmål) no 31.78 402,728 13,542,383 1,028,281
64 Estonian Eesti et 30.79 129,158 4,194,868 330,257
65 Catalan Català ca 30.63 444,852 14,959,688 1,117,884
66 Low Saxon Plattdüütsch nds 30.56 22,373 765,512 55,752
67 Azerbaijani Azərbaycanca az 30.2 100,092 3,317,289 251,555
68 Luxembourgish Lëtzebuergesch lb 29.91 42,439 1,872,738 94,607
69 Alemannic Alemannisch als 26.67 17,806 617,686 41,699
70 Albanian Shqip sq 26.66 51,938 1,626,454 126,825
71 Kurdish Kurdî ku 25.88 20,870 662,576 50,047
72 Basque Euskara eu 25.25 204,983 4,853,278 552,501
73 Faroese Føroyskt fo 24.72 10,746 310,748 26,283
74 Telugu తెలుగు te 23.81 59,889 1,349,024 160,785
75 Bishnupriya Manipuri বিষ্ণুপ্রিয়া মণিপুরী bpy 23.3 25,126 803,793 57,590
76 Neapolitan Nnapulitano nap 23.24 14,288 689,035 28,231
77 Walloon Walon wa 22.46 13,622 319,046 35,003
78 Bulgarian Български bg 21.79 186,645 6,772,404 397,830
79 Tatar Татарча tt 21.6 65,675 2,068,608 147,045
80 Slovenian Slovenščina sl 21.54 143,440 4,490,363 321,581
81 Belarusian Беларуская be 21.44 78,361 1,975,860 191,240
82 Sicilian Sicilianu scn 20.09 24,646 738,703 54,705
83 Amharic አማርኛ am 19.9 16,235 332,734 41,954
84 Galician Galego gl 19.8 118,787 3,515,584 263,501
85 Polish Polski pl 19.74 1,081,989 41,324,849 2,188,351
86 Vietnamese Tiếng Việt vi 19.59 1,111,041 20,175,274 3,010,601
87 Scots Scots sco 19.45 28,182 455,170 80,421
88 Lithuanian Lietuvių lt 19.16 169,210 4,865,310 374,753
89 Nahuatl Nāhuatl nah 19.12 10,151 398,420 20,128
90 Punjabi ਪੰਜਾਬੀ pa 19.05 16,176 222,698 49,441
91 Slovak Slovenčina sk 18.54 196,920 5,943,947 423,177
92 Asturian Asturianu ast 17.96 20,045 789,844 38,899
93 Norwegian (Nynorsk) Nynorsk nn 17.81 118,245 2,891,918 271,000
94 Esperanto Esperanto eo 17.63 207,088 5,664,055 452,962
95 Breton Brezhoneg br 17.34 51,846 1,685,734 105,985
96 Sundanese Basa Sunda su 15.59 17,774 462,183 37,858
97 Volapük Volapük vo 15.45 119,399 3,300,417 248,078
98 West Frisian Frysk fy 14.56 31,285 740,583 67,266
99 Nepali नेपाली ne 14.49 27,005 445,627 66,798
100 Malay Bahasa Melayu ms 14.07 271,534 3,885,757 705,475
101 Newari नेवारी new 12.6 71,141 823,886 193,538
102 Javanese Basa Jawa jv 11.45 48,342 910,362 103,485
103 Interlingua Interlingua ia 11.43 14,348 551,868 24,586
104 Swedish Svenska sv 11.16 1,950,876 29,120,841 4,518,305
105 Latin Latina Latina 10.51 112,141 2,908,788 209,747
106 Dutch Nederlands nl 9.03 1,803,582 43,791,362 3,289,196
107 Bashkir Башҡорт ba 8.74 33,335 457,596 72,588
108 Kazakh Қазақша kk 8.38 209,684 2,277,043 491,782
109 Gujarati ગુજરાતી gu 8.32 25,634 380,375 53,322
110 Banyumasan Basa Banyumasan map-bms 7.75 13,058 203,118 26,080
111 Samogitian Žemaitėška bat-smg 7.08 13,695 335,009 23,309
112 Irish Gaeilge ga 6.46 32,524 770,689 54,509
113 Tajik Тоҷикӣ tg 6.17 30,534 459,897 57,301
114 Mazandarani مَزِروني mzn 5.39 12,015 129,633 24,025
115 Occitan Occitan oc 5.31 88,018 2,090,574 140,646
116 Yoruba Yorùbá yo 5.27 31,062 546,344 53,343
117 Ido Ido io 5.16 26,175 925,511 38,266
118 Scottish Gaelic Gàidhlig gd 5.14 18,801 497,470 29,115
119 Chuvash Чăваш cv 4.38 30,291 548,314 49,311
120 Cebuano Sinugboanong Binisaya ceb 3.54 1,208,472 5,768,687 2,790,183
121 Waray-Waray Winaray war 3.54 1,258,864 6,248,821 2,862,946
122 Piedmontese Piemontèis pms 1.98 63,671 848,877 93,405
123 Kirghiz Кыргызча ky 1.37 27,459 187,835 42,773
124 Burmese language မ္ရန္‌မာစာ my 1.13 32,469 222,909 48,618
125 Buginese Basa Ugi bug 0.92 14,089 197,071 18,183
126 Western Panjabi شاہ مکھی پنجابی pnb 0.46 33,232 415,214 40,228
127 Haitian Krèyol ayisyen ht 0.29 53,056 706,935 61,433
128 Chechen Нохчийн ce 0.16 74,629 423,693 88,308
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.