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 888 = 21.25 × 41.78 and is the deepest one for Wikipedias with number of articles greater than 10000.

The largest depth for the unblocked Wikipedias has Ripuarian Wikipedia which has the depth 1412 = 215.6 × 6.55.

The smallest depth has Minangkabau Wikipedia which has the depth 0.0062 = 4.16 × 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 31 May 2015.

No. Language Language (local) Wiki Depth Articles Edits Total
1 English English en 887.94 4,908,253 778,574,432 36,633,960
2 Bengali বাংলা bn 485.83 36,269 1,936,419 399,277
3 Serbo-Croatian Srpskohrvatski / Српскохрватски sh 387.27 406,452 17,270,982 4,480,427
4 Malayalam മലയാളം ml 285.15 39,301 2,238,769 269,606
5 Thai ไทย th 267.35 95,967 6,366,012 562,330
6 Egyptian Arabic مصرى arz 249.25 14,227 685,527 100,024
7 Hebrew עברית he 253.1 174,278 18,075,979 732,370
8 Turkish Türkçe tr 228.92 248,439 16,666,076 1,297,067
9 Persian فارسی fa 209.88 459,645 20,217,180 3,043,195
10 Arabic العربية ar 214.05 373,941 18,909,131 2,269,141
11 French Français fr 205.26 1,639,129 118,749,713 7,567,292
12 Spanish Español es 189.95 1,184,325 88,850,269 5,091,800
13 Simple English Simple English simple 171.94 113,712 12,541,698 369,719
14 Urdu اردو ur 163.01 72,614 4,331,695 327,550
15 Bosnian Bosanski bs 159.28 61,811 2,818,926 327,849
16 Chinese 中文 zh 147.56 828,707 37,455,212 4,199,435
17 Sorani کوردی ckb 137.4 15,489 490,940 95,613
18 Macedonian Македонски mk 136.09 82,515 4,170,146 368,772
19 Portuguese Português pt 130.16 879,007 43,741,830 3,856,751
20 Russian Русский ru 125.55 1,234,393 84,153,221 4,395,307
21 Italian Italiano it 108.91 1,208,569 78,867,987 4,075,745
22 German Deutsch de 97.44 1,831,112 148,993,731 5,211,736
23 Ossetian Иронау os 94.1 10,188 481,996 37,901
24 Hindi हिन्दी hi 98.29 100,349 2,954,795 516,151
25 Latvian Latviešu lv 92.89 61,532 2,431,348 252,727
26 Korean 한국어 ko 86.71 319,906 16,196,924 1,094,153
27 Sinhalese සිංහල si 85.41 11,282 346,334 51,480
28 Hungarian Magyar hu 75.84 325,505 16,870,878 1,023,789
29 Aragonese Aragonés an 81.66 30,639 1,608,390 99,506
30 Venetian Vèneto vec 77.57 10,592 589,137 32,504
31 Romanian Română ro 76.98 326,932 9,945,697 1,405,078
32 Indonesian Bahasa Indonesia id 76.07 361,490 10,502,918 1,587,052
33 Bavarian Boarisch bar 53.68 12,811 464,635 40,533
34 Danish Dansk da 68.66 205,482 8,532,336 689,478
35 Marathi मराठी mr 72.18 42,001 1,385,429 165,229
36 Japanese 日本語 ja 70.72 972,665 57,046,683 2,777,567
37 Greek Ελληνικά el 68.11 107,913 5,445,145 325,749
38 Kannada ಕನ್ನಡ kn 67.51 16,175 530,853 61,360
39 Serbian Српски sr 66.39 321,724 11,413,432 1,156,032
40 Welsh Cymraeg cy 64.1 63,894 5,276,920 150,201
41 Uzbek O‘zbek uz 59.86 127,864 2,345,642 647,683
42 Sakha Саха тыла sah 50.72 10,411 340,352 33,765
43 Yiddish ייִדיש yi 48.28 12,775 518,066 36,259
44 Sanskrit संस्कृतम् sa 49.23 9,977 302,292 33,165
45 Finnish Suomi fi 46.02 374,766 15,875,737 1,018,765
46 Icelandic Íslenska is 43.94 39,471 1,562,828 108,365
47 Czech Čeština cs 41.52 325,498 13,080,380 864,804
48 Amharic አማርኛ am 41.29 12,952 341,642 42,205
49 Mongolian Монгол mn 41.26 14,576 457,951 43,398
50 Tamil தமிழ் ta 41 67,215 1,950,252 207,650
51 Tagalog Tagalog tl 37.95 63,416 1,550,239 205,746
52 Ukrainian Українська uk 36.4 579,694 16,610,188 1,697,916
53 Georgian ქართული ka 35.58 96,803 3,039,161 268,389
54 Telugu తెలుగు te 36.69 60,252 1,533,285 188,081
55 Afrikaans Afrikaans af 34.46 35,908 1,418,648 88,575
56 Albanian Shqip sq 35.04 50,677 1,683,059 135,932
57 Quechua Runa Simi qu 34.87 19,328 656,963 51,189
58 Croatian Hrvatski hr 34.45 155,003 4,719,329 429,450
59 Faroese Føroyskt fo 35.39 11,262 328,376 32,261
60 Azerbaijani Azərbaycanca az 34 97,367 3,506,937 248,402
61 Norwegian (Bokmål) Norsk (Bokmål) no 33.88 414,262 14,020,674 1,085,020
62 Lombard Lumbaart lmo 32.47 31,910 1,054,347 82,892
63 Swahili Kiswahili sw 31.47 29,127 994,146 73,583
64 Cantonese 粵語 zh-yue 31.86 37,085 977,985 106,003
65 Belarusian (Taraškievica) Беларуская (тарашкевіца) be-x-old 31.83 56,713 1,871,004 146,136
66 Catalan Català ca 31.07 466,336 15,794,259 1,175,410
67 Estonian Eesti et 30.77 136,083 4,344,687 350,486
68 Low Saxon Plattdüütsch nds 31.58 23,462 781,276 60,000
69 Luxembourgish Lëtzebuergesch lb 29.92 43,920 1,917,650 98,321
70 Armenian Հայերեն hy 28.28 172,734 3,257,978 550,275
71 Min Nan Bân-lâm-gú zh-min-nan 31.62 17,600 498,919 48,438
72 Kurdish Kurdî ku 26.56 21,150 672,489 51,237
73 Basque Euskara eu 26.31 208,414 5,065,825 565,637
74 Alemannic Alemannisch als 25.26 19,358 652,073 44,884
75 Neapolitan Nnapulitano nap 24.23 14,320 691,755 28,672
76 Slovenian Slovenščina sl 24.18 146,532 4,635,127 342,357
77 Bulgarian Български bg 23.51 203,428 7,149,866 451,227
78 Scottish Gaelic Gàidhlig gd 23.38 13,000 513,568 27,563
79 Bishnupriya Manipuri বিষ্ণুপ্রিয়া মণিপুরী bpy 23.52 25,059 804,318 57,570
80 Punjabi ਪੰਜਾਬੀ pa 23.14 17,587 256,970 57,668
81 Walloon Walon wa 22.65 13,795 322,320 35,623
82 Tatar Татарча tt 22.64 66,969 2,105,091 152,817
83 Polish Polski pl 21.45 1,120,288 43,047,367 2,326,478
84 Belarusian Беларуская be 16.73 94,214 2,107,918 218,211
85 Galician Galego gl 20.9 123,395 3,687,655 278,386
86 West Frisian Frysk fy 20.53 32,085 785,554 77,853
87 Nepali नेपाली ne 19.96 26,439 484,016 71,989
88 Sicilian Sicilianu scn 20.2 25,207 746,617 56,325
89 Vietnamese Tiếng Việt vi 19.91 1,135,603 21,272,429 3,056,070
90 Lithuanian Lietuvių lt 19.86 172,650 4,964,223 387,668
91 Nahuatl Nāhuatl nah 18.05 10,703 406,496 21,052
92 Asturian Asturianu ast 9.96 26,432 824,376 46,179
93 Norwegian (Nynorsk) Nynorsk nn 18.19 121,017 2,941,344 280,350
94 Slovak Slovenčina sk 18.09 205,270 6,096,910 439,724
95 Javanese Basa Jawa jv 17.9 48,474 953,050 121,787
96 Scots Scots sco 17.24 32,021 475,956 89,755
97 Esperanto Esperanto eo 17.1 216,239 5,776,230 471,758
98 Breton Brezhoneg br 16.76 54,264 1,729,029 110,401
99 Sundanese Basa Sunda su 16.62 18,049 469,746 39,343
100 Malay Bahasa Melayu ms 15.61 274,205 4,003,788 739,946
101 Volapük Volapük vo 15.24 120,208 3,305,453 249,005
102 Newari नेवारी new 12.25 72,367 828,619 195,319
103 Tajik Тоҷикӣ tg 12.64 32,595 663,885 70,307
104 Bashkir Башҡорт ba 12.79 34,830 522,925 85,078
105 Interlingua Interlingua ia 12.13 14,454 555,285 25,170
106 Swedish Svenska sv 11.63 1,970,010 30,048,634 4,597,480
107 Dutch Nederlands nl 10.82 1,826,654 45,442,737 3,492,650
108 Malagasy Malagasy mg 10.74 79,332 806,676 212,928
109 Latin Latina Latina 10.31 118,445 3,000,858 221,881
110 Gujarati ગુજરાતી gu 10.53 25,570 394,469 57,157
111 Kazakh Қазақша kk 8.89 211,961 2,417,280 499,189
112 Banyumasan Basa Banyumasan map-bms 8.27 12,937 205,426 26,232
113 Samogitian Žemaitėška bat-smg 6.82 14,122 340,464 23,891
114 Ido Ido io 6.01 26,042 932,433 39,120
115 Irish Gaeilge ga 5.7 35,159 793,958 57,805
116 Mazandarani مَزِروني mzn 5.99 12,053 132,723 24,801
117 Occitan Occitan oc 5.54 88,276 2,109,330 142,240
118 Yoruba Yorùbá yo 5.29 31,072 547,805 53,393
119 Chuvash Чăваш cv 3.93 32,931 566,866 52,879
120 Waray-Waray Winaray war 3.57 1,259,129 6,261,857 2,868,730
121 Cebuano Sinugboanong Binisaya ceb 3.53 1,211,340 5,776,556 2,793,541
122 Burmese language မ္ရန္‌မာစာ my 2.37 31,100 249,492 53,223
123 Piedmontese Piemontèis pms 2.09 63,799 853,132 94,483
124 Kirghiz Кыргызча ky 0.89 31,704 203,849 45,861
125 Buginese Basa Ugi bug 0.94 14,104 197,598 18,259
126 Western Panjabi شاہ مکھی پنجابی pnb 0.46 33,879 422,193 41,072
127 Haitian Krèyol ayisyen ht 0.36 52,456 709,912 61,736
128 Chechen Нохчийн ce 0.17 97,692 822,798 112,711
129 Minangkabau Bahaso Minangkabau min 0.006 221,619 958,345 230,161
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 888 97 205 21 71 109 11 130 190 126 12 148 34 46 31 36 229 77 15 42 76 17 18 69 76 253 214 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.