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 881 = 21.69 × 40.62 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 659 = 49.53 × 13.3.

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 23 November 2014.

No. Language Language (local) Wiki Depth Articles Edits Total
1 English English en 881.09 4,655,220 744,538,194 34,324,600
2 Bengali বাংলা bn 490.58 33,040 1,796,540 361,153
3 Macedonian Македонски mk 488.41 79,754 3,373,173 1,074,562
4 Malayalam മലയാളം ml 290.15 37,299 2,167,110 255,415
5 Egyptian Arabic مصرى arz 262.18 13,092 657,846 92,645
6 Hebrew עברית he 256.4 163,655 17,158,753 688,636
7 Thai ไทย th 251.11 90,780 6,023,396 508,921
8 Serbo-Croatian Srpskohrvatski / Српскохрватски sh 247.53 274,658 7,943,515 2,873,757
9 Turkish Türkçe tr 210.09 236,552 15,819,990 1,168,312
10 Arabic العربية ar 193.17 340,453 17,086,014 1,931,354
11 French Français fr 190.59 1,564,322 111,697,236 6,952,242
12 Bosnian Bosanski bs 187.9 55,007 2,711,299 309,945
13 Spanish Español es 175.55 1,140,123 83,788,410 4,728,831
14 Persian فارسی fa 166.31 432,229 18,515,147 2,466,841
15 Urdu اردو ur 153.88 62,397 4,087,431 256,173
16 Sorani کوردی ckb 139.49 14,965 476,230 93,122
17 Chinese 中文 zh 128.77 796,856 34,793,842 3,775,636
18 Simple English Simple English simple 127.54 118,129 12,333,241 339,449
19 Portuguese Português pt 124.33 850,640 41,738,468 3,658,907
20 Russian Русский ru 114.53 1,165,556 79,292,895 3,949,305
21 Italian Italiano it 104.59 1,158,515 74,596,135 3,850,225
22 Hungarian Magyar hu 99.09 270,612 16,016,184 914,212
23 Romanian Română ro 97.09 254,979 9,275,208 1,133,148
24 Latvian Latviešu lv 94.63 57,076 2,312,774 233,497
25 Ossetian Иронау os 93.38 10,003 477,080 36,877
26 German Deutsch de 89.22 1,779,625 141,735,163 4,907,565
27 Korean 한국어 ko 83.46 295,300 15,040,636 986,061
28 Aragonese Aragonés an 82.17 30,287 1,596,360 98,476
29 Venetian Vèneto vec 76.14 10,481 579,346 31,962
30 Bavarian Boarisch bar 73.71 10,551 438,873 36,772
31 Danish Dansk da 69.95 193,031 8,214,940 645,650
32 Japanese 日本語 ja 68.87 935,365 54,651,020 2,642,140
33 Sinhalese සිංහල si 68.4 11,535 329,501 47,915
34 Marathi मराठी mr 65.01 40,838 1,328,942 152,309
35 Serbian Српски sr 64.84 311,445 10,875,730 1,114,105
36 Indonesian Bahasa Indonesia id 64.06 350,802 9,293,203 1,465,992
37 Welsh Cymraeg cy 64.08 60,613 5,228,475 140,014
38 Yiddish ייִדיש yi 61.1 11,435 507,351 34,866
39 Uzbek O‘zbek uz 58.14 127,751 2,297,640 643,071
40 Hindi हिन्दी hi 57.58 116,219 2,753,621 487,132
41 Kannada ಕನ್ನಡ kn 44.79 17,100 472,565 56,761
42 Finnish Suomi fi 44.41 360,197 15,325,975 961,413
43 Greek Ελληνικά el 43.5 112,399 5,069,005 289,601
44 Icelandic Íslenska is 43.4 38,393 1,530,207 104,480
45 Sakha Саха тыла sah 42.84 10,664 335,258 32,345
46 Georgian ქართული ka 39.57 86,548 2,883,182 245,387
47 Czech Čeština cs 38.74 309,078 12,420,091 796,138
48 Min Nan Bân-lâm-gú zh-min-nan 38.37 11,376 464,207 28,983
49 Tamil தமிழ் ta 37.45 64,874 1,839,331 193,714
50 Tagalog Tagalog tl 37.07 62,862 1,525,087 202,223
51 Ukrainian Українська uk 36.52 538,570 15,369,919 1,583,078
52 Mongolian Монгол mn 35.8 13,688 430,467 38,033
53 Sanskrit संस्कृतम् sa 35.01 10,240 287,395 29,728
54 Afrikaans Afrikaans af 34.73 33,650 1,362,526 82,423
55 Quechua Runa Simi qu 34.77 19,192 654,030 50,700
56 Swahili Kiswahili sw 34.76 27,184 979,241 70,052
57 Croatian Hrvatski hr 34.13 149,741 4,583,541 412,034
58 Armenian Հայերեն hy 33.84 139,109 2,695,683 480,932
59 Cantonese 粵語 zh-yue 33.1 33,533 933,178 95,131
60 Belarusian (Taraškievica) Беларуская (тарашкевіца) be-x-old 32.66 54,840 1,825,898 142,340
61 Malagasy Malagasy mg 32.15 47,064 730,810 179,212
62 Lombard Lumbaart lmo 32.03 31,417 1,047,782 80,784
63 Low Saxon Plattdüütsch nds 30.96 22,164 764,241 55,352
64 Estonian Eesti et 30.87 128,475 4,178,567 328,693
65 Catalan Català ca 30.27 442,417 14,735,145 1,110,626
66 Luxembourgish Lëtzebuergesch lb 30.03 42,116 1,864,670 93,912
67 Azerbaijani Azərbaycanca az 29.7 100,228 3,293,834 251,063
68 Bulgarian Български bg 26.99 169,540 6,725,067 378,485
69 Alemannic Alemannisch als 26.9 17,641 613,908 41,404
70 Albanian Shqip sq 26.52 51,859 1,621,241 126,438
71 Norwegian (Bokmål) Norsk (Bokmål) no 25.98 435,467 14,597,652 1,023,057
72 Kurdish Kurdî ku 25.85 20,840 661,813 49,952
73 Basque Euskara eu 25.19 204,490 4,842,826 550,507
74 Faroese Føroyskt fo 24.67 10,695 308,586 26,162
75 Bishnupriya Manipuri বিষ্ণুপ্রিয়া মণিপুরী bpy 23.29 25,126 803,761 57,579
76 Neapolitan Nnapulitano nap 23.23 14,276 688,874 28,196
77 Telugu తెలుగు te 22.91 59,637 1,330,925 157,969
78 Walloon Walon wa 22.47 13,584 318,461 34,902
79 Tatar Татарча tt 21.66 64,729 2,059,845 144,530
80 Slovenian Slovenščina sl 21.46 142,987 4,472,907 320,218
81 Belarusian Беларуская be 21.35 77,705 1,964,836 189,078
82 Sicilian Sicilianu scn 20.15 24,595 738,207 54,626
83 Scots Scots sco 19.94 27,684 453,048 79,458
84 Amharic አማርኛ am 19.88 16,230 332,508 41,922
85 Galician Galego gl 19.74 118,107 3,497,419 261,628
86 Polish Polski pl 19.67 1,077,351 41,037,047 2,178,047
87 Vietnamese Tiếng Việt vi 19.5 1,110,304 20,134,124 3,003,992
88 Nahuatl Nāhuatl nah 19.1 10,144 398,163 20,105
89 Lithuanian Lietuvių lt 19.04 168,656 4,852,952 372,588
90 Punjabi ਪੰਜਾਬੀ pa 19.04 15,860 219,429 48,346
91 Slovak Slovenčina sk 18.55 196,397 5,930,950 422,053
92 Asturian Asturianu ast 18.16 19,800 788,533 38,426
93 Norwegian (Nynorsk) Nynorsk nn 17.74 117,963 2,885,952 269,920
94 Esperanto Esperanto eo 17.7 205,770 5,647,875 450,166
95 Breton Brezhoneg br 17.46 51,507 1,680,788 105,413
96 Volapük Volapük vo 15.46 119,370 3,300,254 248,035
97 Sundanese Basa Sunda su 15.29 17,736 461,160 37,516
98 West Frisian Frysk fy 14.49 31,129 738,674 66,748
99 Malay Bahasa Melayu ms 14.04 271,008 3,875,077 703,845
100 Nepali नेपाली ne 13.64 27,239 437,897 66,417
101 Newari नेवारी new 12.66 70,927 823,203 193,176
102 Javanese Basa Jawa jv 11.45 48,227 909,483 103,200
103 Interlingua Interlingua ia 11.39 14,327 551,565 24,523
104 Swedish Svenska sv 11.04 1,948,781 28,807,371 4,511,091
105 Latin Latina Latina 10.46 111,812 2,901,357 208,852
106 Dutch Nederlands nl 8.97 1,798,450 43,535,605 3,276,504
107 Bashkir Башҡорт ba 8.69 33,280 456,190 72,356
108 Kazakh Қазақша kk 8.36 209,277 2,267,285 490,854
109 Gujarati ગુજરાતી gu 8.11 25,577 378,557 52,780
110 Banyumasan Basa Banyumasan map-bms 7.75 13,054 203,085 26,073
111 Samogitian Žemaitėška bat-smg 7.1 13,686 334,865 23,303
112 Irish Gaeilge ga 6.52 32,308 767,429 54,234
113 Tajik Тоҷикӣ tg 6.16 30,478 459,235 57,174
114 Scottish Gaelic Gàidhlig gd 5.66 17,603 492,598 27,494
115 Mazandarani مَزِروني mzn 5.38 12,015 129,555 24,006
116 Occitan Occitan oc 5.32 87,843 2,088,120 140,386
117 Yoruba Yorùbá yo 5.27 31,058 546,239 53,338
118 Ido Ido io 5.05 26,125 924,941 38,024
119 Chuvash Чăваш cv 4.38 30,191 547,448 49,112
120 Cebuano Sinugboanong Binisaya ceb 3.54 1,208,461 5,768,411 2,790,158
121 Waray-Waray Winaray war 3.54 1,258,830 6,248,124 2,862,743
122 Piedmontese Piemontèis pms 1.97 63,651 848,505 93,256
123 Kirghiz Кыргызча ky 1.34 27,430 187,265 42,591
124 Burmese language မ္ရန္‌မာစာ my 1.11 32,388 221,713 48,310
125 Buginese Basa Ugi bug 0.91 14,089 197,050 18,176
126 Western Panjabi شاہ مکھی پنجابی pnb 0.46 33,220 414,955 40,200
127 Haitian Krèyol ayisyen ht 0.27 53,168 706,486 61,375
128 Chechen Нохчийн ce 0.2 67,492 402,043 80,966
129 Minangkabau Bahaso Minangkabau min 0.002 221,130 482,800 227,818
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 881 89 191 20 69 105 9 124 176 115 11 129 26 44 30 37 210 97 15 39 99 18 19 70 64 256 193 83 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.