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 874 = 21.77 × 40.13 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 1143 = 53.33 × 21.43.

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 17 September 2014.

No. Language Language (local) Wiki Depth Articles Edits Total
1 English English en 873.63 4,604,496 735,262,397 33,772,400
2 Macedonian македонски mk 497.21 78,778 3,354,944 1,071,511
3 Bengali বাংলা bn 496.75 32,138 1,767,084 351,685
4 Malayalam മലയാളം ml 280.98 36,664 2,095,232 248,182
5 Egyptian Arabic مصرى arz 272.38 12,808 654,433 92,113
6 Hebrew עברית he 256.68 161,306 16,884,384 679,892
7 Thai ไทย th 245.55 89,649 5,926,073 496,112
8 Serbo-Croatian srpskohrvatski / српскохрватски sh 237.4 216,918 6,550,529 2,116,880
9 Turkish Türkçe tr 209.58 234,325 15,651,876 1,156,402
10 Bosnian bosanski bs 202.57 52,562 2,680,554 304,841
11 Urdu اردو ur 197.59 52,981 4,027,222 231,560
12 Arabic العربية ar 193.49 328,589 16,686,770 1,850,838
13 French français fr 186.51 1,544,702 109,820,682 6,790,344
14 Spanish español es 174.99 1,125,421 82,477,657 4,666,752
15 Persian فارسی fa 158.01 423,696 18,068,589 2,340,581
16 Sorani کوردی ckb 138.94 14,881 472,670 92,459
17 Simple English Simple English simple 128.39 116,361 12,275,166 333,768
18 Chinese 中文 zh 123.7 786,164 34,083,252 3,645,866
19 Portuguese português pt 123.07 839,922 41,136,082 3,594,245
20 Russian русский ru 114.59 1,147,738 77,917,510 3,894,529
21 Italian italiano it 103.25 1,143,692 73,479,466 3,779,244
22 Hungarian magyar hu 99.37 266,298 15,777,077 900,514
23 Romanian română ro 96.13 252,170 9,176,337 1,113,409
24 Latvian latviešu lv 94.67 56,184 2,289,395 229,124
25 German Deutsch de 89.42 1,757,681 139,762,338 4,855,737
26 Aragonese aragonés an 82.43 30,191 1,594,130 98,236
27 Korean 한국어 ko 82.17 288,979 14,775,264 954,939
28 Bavarian Boarisch bar 77.29 10,202 433,360 36,083
29 Venetian vèneto vec 75.3 10,426 576,078 31,623
30 Danish dansk da 70.06 191,369 8,139,158 640,846
31 Japanese 日本語 ja 68.2 926,472 53,955,765 2,608,978
32 Sinhalese සිංහල si 68.08 11,331 323,589 46,941
33 Marathi मराठी mr 64.65 40,554 1,319,147 150,797
34 Yiddish ייִדיש yi 63.89 11,183 505,811 34,543
35 Serbian српски / srpski sr 63.2 252,063 10,301,937 816,019
36 Welsh Cymraeg cy 62.37 60,129 5,207,054 137,217
37 Indonesian Bahasa Indonesia id 62.29 348,117 9,184,132 1,433,556
38 Uzbek oʻzbekcha uz 57.91 127,695 2,292,760 641,822
39 Hindi हिन्दी hi 54.96 114,577 2,651,192 473,565
40 Greek Ελληνικά el 45.99 108,393 4,978,643 283,937
41 Kannada ಕನ್ನಡ kn 45.17 16,343 452,632 54,436
42 Finnish suomi fi 44.8 354,795 15,172,453 948,570
43 Icelandic íslenska is 43.44 38,165 1,524,434 103,799
44 Sakha саха тыла sah 42.06 10,526 331,732 31,593
45 Georgian ქართული ka 39.71 84,922 2,849,375 240,345
46 Min Nan Bân-lâm-gú zh-min-nan 39.26 11,242 463,508 28,800
47 Czech čeština cs 38.82 304,472 12,255,247 784,410
48 Tamil தமிழ் ta 37.92 63,185 1,805,465 189,121
49 Mongolian монгол mn 37.76 13,224 426,498 37,233
50 Ukrainian українська uk 36.4 525,615 15,017,727 1,541,709
51 Swahili Kiswahili sw 36 26,571 976,331 68,932
52 Tagalog Tagalog tl 35.76 63,042 1,505,168 200,706
53 Afrikaans Afrikaans af 35.17 33,072 1,347,793 81,215
54 Quechua Runa Simi qu 34.77 19,160 653,459 50,595
55 Croatian hrvatski hr 34.61 147,947 4,553,424 408,713
56 Sanskrit संस्कृतम् sa 34.27 10,210 285,247 29,398
57 Armenian Հայերեն hy 34.21 132,791 2,571,604 462,006
58 Cantonese 粵語 zh-yue 34.13 32,685 925,348 93,320
59 Belarusian (Taraškievica) беларуская (тарашкевіца)‎ be-x-old 33.16 54,122 1,814,149 141,012
60 Malagasy Malagasy mg 32.11 47,049 729,504 179,168
61 Lombard lumbaart lmo 31.93 31,252 1,045,840 80,138
62 Low Saxon Plattdüütsch nds 31.75 21,716 761,204 54,436
63 Estonian eesti et 30.92 126,409 4,116,037 323,440
64 Luxembourgish Lëtzebuergesch lb 30.21 41,672 1,852,228 92,991
65 Catalan català ca 29.9 436,768 14,435,862 1,094,338
66 Azerbaijani azərbaycanca az 29.8 101,574 3,215,551 258,909
67 Bulgarian български bg 27.53 166,217 6,660,358 372,477
68 Alemannic Alemannisch als 27.15 17,336 605,316 40,785
69 Norwegian (Bokmål) norsk bokmål no 26.1 430,436 14,468,945 1,012,040
70 Albanian shqip sq 26.1 51,647 1,608,106 125,290
71 Kurdish Kurdî ku 25.97 20,733 659,584 49,753
72 Basque Euskara eu 25.33 199,957 4,757,568 538,580
73 Faroese føroyskt fo 24.5 10,553 305,678 25,698
74 Bishnupriya Manipuri বিষ্ণুপ্রিয়া মণিপুরী bpy 23.29 25,138 803,608 57,627
75 Neapolitan Napulitano nap 23.26 14,191 687,860 27,998
76 Walloon walon wa 22.66 13,481 317,516 34,691
77 Scots Scots sco 22.43 25,876 447,977 76,536
78 Telugu తెలుగు te 21.78 58,983 1,289,078 154,196
79 Slovene slovenščina sl 21.31 142,090 4,420,974 317,990
80 Belarusian беларуская be 21.25 75,615 1,934,687 182,728
81 Tatar татарча/tatarça tt 21.16 64,066 2,014,216 142,435
82 Punjabi ਪੰਜਾਬੀ pa 20.62 13,783 206,315 42,037
83 Sicilian sicilianu scn 20.11 24,451 734,596 54,245
84 Amharic አማርኛ am 19.86 16,189 331,942 41,783
85 Galician galego gl 19.62 116,393 3,452,684 257,084
86 Nahuatl Nāhuatl nah 19.38 10,061 397,432 19,994
87 Polish polski pl 19.16 1,064,782 40,446,500 2,135,859
88 Vietnamese Tiếng Việt vi 18.94 1,108,067 19,719,344 2,983,636
89 Slovak slovenčina sk 18.56 194,777 5,883,920 418,586
90 Esperanto Esperanto eo 18.05 201,782 5,614,723 442,450
91 Breton brezhoneg br 17.94 50,642 1,671,067 104,197
92 Lithuanian lietuvių lt 17.87 167,085 4,816,395 360,249
93 Norwegian (Nynorsk) norsk nynorsk nn 17.63 116,781 2,871,536 266,057
94 Asturian asturianu ast 16.57 19,729 783,849 37,235
95 Volapük Volapük vo 15.47 119,330 3,299,801 247,993
96 Sundanese Basa Sunda su 14.5 17,661 458,709 36,676
97 Nepali नेपाली ne 14.15 26,019 426,382 63,915
98 West Frisian Frysk fy 14.09 30,709 733,254 65,044
99 Malay Bahasa Melayu ms 14.08 268,579 3,845,365 698,001
100 Newar नेपाल भाषा new 12.59 70,886 822,182 192,656
101 Javanese Basa Jawa jv 11.7 47,682 907,331 102,504
102 Interlingua interlingua ia 11.4 14,300 551,136 24,473
103 Swedish svenska sv 10.56 1,942,852 27,489,933 4,495,484
104 Latin Latina la 10.35 111,123 2,885,491 206,867
105 Dutch Nederlands nl 8.84 1,790,045 43,085,579 3,251,829
106 Kazakh қазақша kk 8.35 208,420 2,243,561 489,831
107 Bashkir башҡортса ba 8.28 32,982 447,099 70,744
108 Banyumasan Basa Banyumasan map-bms 7.73 13,053 202,979 26,057
109 Gujarati ગુજરાતી gu 7.47 25,550 373,374 51,479
110 Samogitian žemaitėška bat-smg 7.09 13,681 334,595 23,293
111 Irish Gaeilge ga 6.79 31,479 758,770 53,199
112 Tajik тоҷикӣ tg 6.41 29,828 456,256 56,372
113 Scottish Gaelic Gàidhlig gd 5.51 17,273 476,647 26,901
114 Occitan occitan oc 5.33 87,502 2,083,361 139,843
115 Yoruba Yorùbá yo 5.32 30,983 545,857 53,307
116 Mazandarani مازِرونی mzn 5.3 11,994 128,516 23,902
117 Ido Ido io 5.09 25,938 923,866 37,773
118 Chuvash Чӑвашла cv 4.28 30,081 545,829 48,667
119 Waray-Waray Winaray war 3.41 1,115,080 5,671,225 2,474,145
120 Cebuano Cebuano ceb 3.4 1,151,257 5,477,125 2,619,977
121 Piedmontese Piemontèis pms 1.94 63,600 847,820 92,920
122 Kirghiz Кыргызча ky 1.28 27,407 185,601 42,187
123 Burmese language မြန်မာဘာသာ my 1.06 32,162 219,167 47,603
124 Buginese ᨅᨔ ᨕᨘᨁᨗ bug 0.91 14,089 196,992 18,176
125 Western Panjabi پنجابی pnb 0.45 33,031 410,630 39,944
126 Haitian Kreyòl ayisyen ht 0.25 53,222 704,800 61,104
127 Chechen нохчийн ce 0.24 57,856 354,609 70,532
128 Minangkabau Baso Minangkabau min 0.002 221,054 481,960 227,647
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 874 89 187 19 68 103 9 123 175 115 11 124 26 45 30 36 210 96 15 39 99 18 19 70 62 257 193 82 18 63
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.