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 879 = 21.72 × 40.46 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 750 = 50.53 × 14.84.

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 26 October 2014.

No. Language Language (local) Wiki Depth Articles Edits Total
1 English English en 878.86 4,635,858 741,217,756 34,124,062
2 Bengali বাংলা bn 491.98 32,722 1,785,667 357,452
3 Macedonian македонски mk 489.89 79,575 3,368,814 1,074,069
4 Malayalam മലയാളം ml 288.85 37,128 2,155,546 253,539
5 Egyptian Arabic مصرى arz 267.26 12,956 656,556 92,424
6 Hebrew עברית he 256.02 162,797 17,049,734 684,872
7 Thai ไทย th 249.23 90,434 5,996,445 504,570
8 Serbo-Croatian srpskohrvatski / српскохрватски sh 224.65 274,142 7,436,818 2,791,588
9 Turkish Türkçe tr 209.94 235,770 15,758,156 1,164,358
10 Bosnian bosanski bs 193 54,118 2,703,140 307,826
11 Arabic العربية ar 190.88 338,883 16,961,749 1,909,992
12 French français fr 189.17 1,557,100 111,006,022 6,894,270
13 Spanish español es 175.38 1,134,980 83,324,749 4,707,729
14 Persian فارسی fa 162.38 428,402 18,338,873 2,405,566
15 Urdu اردو ur 159.48 61,158 4,076,916 253,898
16 Sorani کوردی ckb 140.18 14,904 475,211 92,943
17 Simple English Simple English simple 127.92 117,431 12,313,683 337,225
18 Chinese 中文 zh 126.86 793,096 34,524,593 3,728,704
19 Portuguese português pt 123.34 846,965 41,487,979 3,628,776
20 Russian русский ru 114.88 1,159,124 78,833,385 3,934,668
21 Italian italiano it 103.99 1,153,255 74,217,510 3,822,083
22 Hungarian magyar hu 99.5 268,697 15,936,970 908,677
23 Romanian română ro 96.97 253,484 9,242,217 1,123,924
24 Latvian latviešu lv 94.96 56,679 2,305,037 231,846
25 German Deutsch de 89.38 1,771,134 141,017,884 4,888,740
26 Korean 한국어 ko 82.66 293,131 14,942,185 973,293
27 Aragonese aragonés an 82.28 30,246 1,595,451 98,371
28 Bavarian Boarisch bar 74.76 10,426 435,812 36,523
29 Venetian vèneto vec 75.74 10,458 577,908 31,812
30 Serbian српски / srpski sr 85.81 253,591 10,515,809 965,336
31 Danish dansk da 70 192,471 8,192,135 643,939
32 Japanese 日本語 ja 68.68 932,310 54,420,405 2,631,284
33 Sinhalese සිංහල si 68.51 11,441 327,319 47,524
34 Marathi मराठी mr 65.01 40,721 1,326,549 151,777
35 Indonesian Bahasa Indonesia id 63.95 349,862 9,263,107 1,461,052
36 Welsh Cymraeg cy 63.53 60,456 5,215,395 139,172
37 Yiddish ייִדיש yi 62.09 11,339 506,628 34,735
38 Uzbek oʻzbekcha uz 57.94 127,729 2,294,635 641,996
39 Hindi हिन्दी hi 56.42 115,905 2,718,842 482,740
40 Greek Ελληνικά el 44.69 110,696 5,034,019 287,572
41 Finnish suomi fi 44.49 358,471 15,269,225 957,065
42 Kannada ಕನ್ನಡ kn 44.86 16,982 469,296 56,421
43 Icelandic íslenska is 43.39 38,321 1,528,239 104,254
44 Sakha саха тыла sah 42.21 10,639 333,457 32,078
45 Georgian ქართული ka 39.76 85,949 2,873,019 243,835
46 Min Nan Bân-lâm-gú zh-min-nan 38.8 11,328 464,037 28,954
47 Czech čeština cs 38.75 307,605 12,361,618 792,437
48 Tamil தமிழ் ta 37.47 64,441 1,829,754 192,338
49 Tagalog Tagalog tl 37.17 62,706 1,522,505 201,945
50 Ukrainian українська uk 36.47 533,963 15,260,901 1,567,422
51 Mongolian монгол mn 36.44 13,520 428,839 37,728
52 Swahili Kiswahili sw 34.97 27,041 978,118 69,738
53 Afrikaans Afrikaans af 34.86 33,409 1,354,830 81,911
54 Quechua Runa Simi qu 34.73 19,180 653,741 50,640
55 Sanskrit संस्कृतम् sa 34.67 10,233 286,691 29,589
56 Croatian hrvatski hr 34.2 149,302 4,573,906 411,065
57 Armenian Հայերեն hy 34.19 136,911 2,660,665 475,255
58 Cantonese 粵語 zh-yue 33.37 33,262 930,299 94,502
59 Belarusian (Taraškievica) беларуская (тарашкевіца)‎ be-x-old 32.95 54,493 1,821,392 141,754
60 Malagasy Malagasy mg 32.1 47,061 729,693 179,187
61 Lombard lumbaart lmo 32.04 31,350 1,046,968 80,582
62 Low Saxon Plattdüütsch nds 31.19 22,019 763,302 55,041
63 Estonian eesti et 31.02 127,617 4,162,650 326,759
64 Luxembourgish Lëtzebuergesch lb 30.13 41,946 1,860,401 93,587
65 Catalan català ca 30.13 440,454 14,624,759 1,105,033
66 Azerbaijani azərbaycanca az 29.9 100,929 3,265,792 255,039
67 Bulgarian български bg 27.18 168,441 6,702,923 376,571
68 Alemannic Alemannisch als 27.14 17,458 610,327 41,044
69 Albanian shqip sq 26.33 51,841 1,616,783 126,137
70 Norwegian (Bokmål) norsk bokmål no 26 433,941 14,554,292 1,019,638
71 Kurdish Kurdî ku 25.88 20,805 661,184 49,871
72 Basque Euskara eu 25.03 203,961 4,831,906 547,406
73 Faroese føroyskt fo 24.65 10,641 307,115 26,020
74 Neapolitan Napulitano nap 23.36 14,223 688,443 28,115
75 Bishnupriya Manipuri বিষ্ণুপ্রিয়া মণিপুরী bpy 23.28 25,141 803,666 57,625
76 Walloon walon wa 22.63 13,539 318,214 34,853
77 Telugu తెలుగు te 22.46 59,448 1,313,619 156,785
78 Tatar татарча/tatarça tt 21.56 64,564 2,055,824 143,872
79 Belarusian беларуская be 21.42 76,936 1,955,345 187,060
80 Slovene slovenščina sl 21.39 142,612 4,441,318 319,528
81 Scots Scots sco 20.92 26,970 451,291 78,373
82 Sicilian sicilianu scn 20.16 24,570 737,895 54,575
83 Amharic አማርኛ am 19.86 16,229 332,335 41,911
84 Polish polski pl 19.67 1,072,924 40,863,070 2,169,487
85 Galician galego gl 19.65 117,474 3,481,705 259,674
86 Vietnamese Tiếng Việt vi 19.39 1,109,695 20,061,324 2,998,936
87 Nahuatl Nāhuatl nah 19.16 10,125 397,903 20,082
88 Punjabi ਪੰਜਾਬੀ pa 18.77 15,495 215,536 46,763
89 Slovak slovenčina sk 18.54 195,837 5,910,122 420,888
90 Esperanto Esperanto eo 17.78 204,495 5,635,386 447,472
91 Lithuanian lietuvių lt 17.81 168,094 4,832,252 362,347
92 Norwegian (Nynorsk) norsk nynorsk nn 17.78 117,685 2,881,927 269,378
93 Breton brezhoneg br 17.63 51,182 1,677,497 104,936
94 Asturian asturianu ast 16.69 19,787 786,004 37,427
95 Volapük Volapük vo 15.46 119,362 3,300,136 248,025
96 Sundanese Basa Sunda su 15.18 17,705 460,294 37,360
97 West Frisian Frysk fy 14.36 30,985 736,667 66,181
98 Nepali नेपाली ne 14.2 26,649 433,244 65,776
99 Malay Bahasa Melayu ms 14 270,695 3,866,857 702,429
100 Newar नेपाल भाषा new 12.6 70,885 822,369 192,705
101 Javanese Basa Jawa jv 11.46 48,176 908,621 103,104
102 Interlingua interlingua ia 11.39 14,316 551,443 24,500
103 Swedish svenska sv 10.86 1,946,657 28,324,853 4,504,635
104 Latin Latina la 10.42 111,586 2,895,685 208,165
105 Dutch Nederlands nl 8.93 1,794,479 43,368,918 3,266,248
106 Bashkir башҡортса ba 8.6 33,198 453,729 71,960
107 Kazakh қазақша kk 8.34 208,876 2,256,692 490,019
108 Gujarati ગુજરાતી gu 7.84 25,585 376,511 52,282
109 Banyumasan Basa Banyumasan map-bms 7.74 13,056 203,054 26,070
110 Samogitian žemaitėška bat-smg 7.1 13,684 334,820 23,300
111 Irish Gaeilge ga 6.6 32,054 765,303 53,916
112 Tajik тоҷикӣ tg 6.21 30,324 458,025 56,969
113 Scottish Gaelic Gàidhlig gd 5.68 17,372 490,363 27,102
114 Mazandarani مازِرونی mzn 5.33 12,011 128,779 23,982
115 Occitan occitan oc 5.32 87,744 2,086,151 140,199
116 Yoruba Yorùbá yo 5.32 30,989 546,061 53,324
117 Ido Ido io 5.07 26,051 924,427 37,935
118 Chuvash Чӑвашла cv 4.33 30,129 546,613 48,887
119 Cebuano Cebuano ceb 3.47 1,208,460 5,648,758 2,789,896
120 Waray-Waray Winaray war 3.44 1,258,794 6,061,510 2,862,663
121 Piedmontese Piemontèis pms 1.96 63,636 848,293 93,159
122 Kirghiz Кыргызча ky 1.32 27,424 186,848 42,453
123 Burmese language မြန်မာဘာသာ my 1.08 32,310 220,847 47,962
124 Buginese ᨅᨔ ᨕᨘᨁᨗ bug 0.91 14,089 197,028 18,173
125 Western Panjabi پنجابی pnb 0.45 33,195 411,985 40,153
126 Haitian Kreyòl ayisyen ht 0.27 53,176 706,100 61,302
127 Chechen нохчийн ce 0.22 63,191 393,430 76,383
128 Minangkabau Baso Minangkabau min 0.002 221,077 482,238 227,729
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 879 89 189 20 69 104 9 123 175 115 11 127 26 44 30 36 210 97 15 39 99 18 19 70 64 256 191 83 18 86
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]

Notes[edit]

  1. List of Wikipedias
  2. At November 2008.