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 892 = 21.56 × 41.36 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 = 49.4 × 13.33.

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 13 January 2015.

No. Language Language (local) Wiki Depth Articles Edits Total
1 English English en 891.64 4,707,390 754,127,920 34,981,433
2 Bengali বাংলা bn 483.17 34,016 1,826,553 370,994
3 Macedonian Македонски mk 481.72 80,514 3,388,571 1,076,565
4 Serbo-Croatian Srpskohrvatski / Српскохрватски sh 357.35 276,770 9,115,191 3,534,955
5 Malayalam മലയാളം ml 289.57 37,875 2,192,260 259,708
6 Hebrew עברית he 258.25 165,607 17,406,613 698,866
7 Egyptian Arabic مصرى arz 274.24 13,368 667,132 98,380
8 Thai ไทย th 252.79 92,254 6,104,237 520,609
9 Turkish Türkçe tr 207.93 240,094 16,008,762 1,180,056
10 Persian فارسی fa 208.35 443,169 19,492,020 2,918,348
11 Arabic العربية ar 200.35 347,004 17,523,030 2,010,867
12 French Français fr 194.8 1,585,786 113,724,222 7,126,214
13 Bosnian Bosanski bs 177.69 57,238 2,745,821 316,127
14 Spanish Español es 176.67 1,152,928 85,160,390 4,785,631
15 Urdu اردو ur 143.74 64,933 4,114,830 260,992
16 Sorani کوردی ckb 140.27 15,177 483,805 94,703
17 Chinese 中文 zh 131.9 809,250 35,530,141 3,880,895
18 Simple English Simple English simple 126.79 120,047 12,387,734 345,940
19 Portuguese Português pt 123.6 863,854 42,254,126 3,709,369
20 Russian Русский ru 115.12 1,185,116 80,587,904 4,027,901
21 Italian Italiano it 106.26 1,172,005 75,881,178 3,916,783
22 Romanian Română ro 96.44 259,426 9,379,776 1,152,417
23 Hungarian Magyar hu 93.87 281,093 16,237,393 934,398
24 Latvian Latviešu lv 93.41 58,469 2,344,269 238,840
25 Ossetian Иронау os 92.76 10,130 479,391 37,371
26 German Deutsch de 88.61 1,806,612 143,880,069 4,965,997
27 Korean 한국어 ko 85.08 302,329 15,359,516 1,021,485
28 Aragonese Aragonés an 81.69 30,439 1,598,827 98,842
29 Venetian Vèneto vec 77.38 10,512 582,592 32,277
30 Bavarian Boarisch bar 74.7 10,603 445,920 37,001
31 Danish Dansk da 69.65 195,293 8,292,784 652,479
32 Japanese 日本語 ja 69.26 944,670 55,313,704 2,672,865
33 Welsh Cymraeg cy 63.54 63,133 5,248,986 147,495
34 Indonesian Bahasa Indonesia id 65.94 354,473 9,430,317 1,504,007
35 Serbian Српски sr 65.21 314,403 11,028,531 1,125,437
36 Marathi मराठी mr 65.05 41,176 1,336,370 153,868
37 Sinhalese සිංහල si 62.93 12,277 336,479 49,711
38 Hindi हिन्दी hi 59.66 117,224 2,792,381 500,611
39 Uzbek O‘zbek uz 58.87 127,841 2,321,270 644,847
40 Yiddish ייִדיש yi 57.82 11,786 509,906 35,398
41 Kannada ಕನ್ನಡ kn 45.27 17,586 482,174 58,962
42 Greek Ελληνικά el 44.54 114,683 5,177,863 298,430
43 Finnish Suomi fi 44.12 365,092 15,480,722 973,056
44 Sakha Саха тыла sah 43.71 10,710 337,103 32,797
45 Icelandic Íslenska is 43.32 38,602 1,535,855 105,045
46 Georgian ქართული ka 39.57 88,554 2,937,472 251,566
47 Czech Čeština cs 38.89 313,679 12,589,956 809,757
48 Tamil தமிழ் ta 37.23 66,688 1,879,875 199,105
49 Tagalog Tagalog tl 36.86 63,199 1,530,874 202,875
50 Ukrainian Українська uk 36.72 550,493 15,732,967 1,621,441
51 Sanskrit संस्कृतम् sa 33.14 10,672 290,381 30,622
52 Mongolian Монгол mn 34.66 14,086 436,546 38,812
53 Quechua Runa Simi qu 34.88 19,239 655,057 50,916
54 Min Nan Bân-lâm-gú zh-min-nan 32.33 12,461 467,354 30,587
55 Afrikaans Afrikaans af 34.45 34,290 1,377,632 83,984
56 Croatian Hrvatski hr 33.86 151,350 4,616,463 415,571
57 Swahili Kiswahili sw 32.77 28,026 982,135 71,233
58 Armenian Հայերեն hy 33.49 145,023 2,819,521 497,631
59 Cantonese 粵語 zh-yue 32.52 34,532 943,336 98,009
60 Belarusian (Taraškievica) Беларуская (тарашкевіца) be-x-old 32.32 55,337 1,834,816 143,233
61 Lombard Lumbaart lmo 32.27 31,544 1,050,079 81,449
62 Norwegian (Bokmål) Norsk (Bokmål) no 31.72 405,375 13,618,829 1,034,627
63 Catalan Català ca 30.8 449,383 15,169,607 1,130,100
64 Estonian Eesti et 30.62 130,368 4,221,257 332,988
65 Low Saxon Plattdüütsch nds 30.69 22,485 766,828 56,210
66 Azerbaijani Azərbaycanca az 30.3 100,301 3,353,070 251,674
67 Luxembourgish Lëtzebuergesch lb 29.73 42,833 1,881,897 95,422
68 Albanian Shqip sq 26.73 52,130 1,633,352 127,400
69 Alemannic Alemannisch als 26.2 18,078 622,445 42,159
70 Kurdish Kurdî ku 25.88 20,925 664,307 50,184
71 Basque Euskara eu 25.29 205,859 4,871,899 555,385
72 Telugu తెలుగు te 24.95 61,115 1,382,026 167,346
73 Malagasy Malagasy mg 11.07 76,323 768,924 208,578
74 Faroese Føroyskt fo 23.27 10,928 313,987 26,137
75 Bishnupriya Manipuri বিষ্ণুপ্রিয়া মণিপুরী bpy 23.31 25,129 803,892 57,602
76 Neapolitan Nnapulitano nap 23.2 14,343 689,689 28,348
77 Walloon Walon wa 22.28 13,708 319,695 35,166
78 Bulgarian Български bg 21.83 188,190 6,831,303 401,321
79 Tatar Татарча tt 21.89 66,081 2,081,570 148,716
80 Slovenian Slovenščina sl 21.67 144,128 4,531,309 323,330
81 Belarusian Беларуская be 21.18 80,054 1,998,923 195,173
82 Sicilian Sicilianu scn 20.11 24,779 741,263 55,062
83 Amharic አማርኛ am 19.93 16,253 333,232 42,022
84 Galician Galego gl 19.93 119,635 3,544,226 265,936
85 Vietnamese Tiếng Việt vi 20 1,112,291 20,523,613 3,020,768
86 Polish Polski pl 19.91 1,090,001 41,677,552 2,210,102
87 Lithuanian Lietuvių lt 19.34 169,875 4,885,362 377,548
88 Punjabi ਪੰਜਾਬੀ pa 18.94 16,609 227,125 50,797
89 Nahuatl Nāhuatl nah 18.68 10,238 400,157 20,174
90 Scots Scots sco 18 29,680 460,247 83,221
91 Slovak Slovenčina sk 18.25 199,210 5,970,328 426,759
92 Asturian Asturianu ast 18.12 20,069 791,181 39,048
93 Norwegian (Nynorsk) Nynorsk nn 17.89 118,840 2,900,367 273,051
94 Esperanto Esperanto eo 17.45 209,150 5,681,797 456,918
95 Breton Brezhoneg br 17.19 52,428 1,695,210 107,057
96 West Frisian Frysk fy 18.57 31,405 760,321 73,483
97 Sundanese Basa Sunda su 15.89 17,823 463,292 38,231
98 Volapük Volapük vo 15.38 119,650 3,301,328 248,369
99 Nepali नेपाली ne 15.12 27,016 452,265 67,647
100 Malay Bahasa Melayu ms 14.08 272,575 3,902,001 708,307
101 Newari नेवारी new 12.64 71,162 824,665 193,804
102 Javanese Basa Jawa jv 11.44 48,406 911,193 103,632
103 Interlingua Interlingua ia 11.43 14,371 552,198 24,630
104 Swedish Svenska sv 11.24 1,954,403 29,345,822 4,528,563
105 Latin Latina Latina 10.59 112,682 2,923,232 211,250
106 Dutch Nederlands nl 9.38 1,808,977 44,163,624 3,330,102
107 Bashkir Башҡорт ba 9.28 33,563 464,740 74,506
108 Gujarati ગુજરાતી gu 8.66 25,708 382,422 54,195
109 Kazakh Қазақша kk 8.41 210,524 2,293,523 493,793
110 Banyumasan Basa Banyumasan map-bms 7.77 13,048 203,202 26,078
111 Samogitian Žemaitėška bat-smg 7.07 13,787 335,919 23,475
112 Irish Gaeilge ga 6.41 32,742 772,981 54,813
113 Tajik Тоҷикӣ tg 7.6 30,668 560,198 57,837
114 Scottish Gaelic Gàidhlig gd 5.69 19,066 502,516 30,214
115 Mazandarani مَزِروني mzn 5.39 12,036 129,782 24,076
116 Occitan Occitan oc 5.31 88,346 2,093,681 141,207
117 Yoruba Yorùbá yo 5.26 31,092 546,485 53,384
118 Ido Ido io 5.13 26,270 926,054 38,389
119 Chuvash Чăваш cv 4.46 30,372 554,939 49,526
120 Waray-Waray Winaray war 3.56 1,259,039 6,254,174 2,866,159
121 Cebuano Sinugboanong Binisaya ceb 3.54 1,208,528 5,769,093 2,790,257
122 Piedmontese Piemontèis pms 2 63,704 850,234 93,632
123 Kirghiz Кыргызча ky 1.38 27,485 188,621 42,903
124 Burmese language မ္ရန္‌မာစာ my 1.19 32,762 226,912 49,475
125 Buginese Basa Ugi bug 0.94 14,091 197,157 18,239
126 Western Panjabi شاہ مکھی پنجابی pnb 0.46 33,247 415,523 40,250
127 Haitian Krèyol ayisyen ht 0.3 52,939 707,473 61,448
128 Chechen Нохчийн ce 0.15 79,236 449,074 93,207
129 Minangkabau Bahaso Minangkabau min 0.002 221,169 483,218 227,890
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 892 89 195 20 69 106 9 124 177 115 11 132 32 44 31 37 208 96 15 39 94 17 18 70 66 258 200 85 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.