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 877 = 21.74 × 40.32 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 1036 = 52.76 × 19.63.

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 1 October 2014.

No. Language Language (local) Wiki Depth Articles Edits Total
1 English English en 876.58 4,613,843 737,252,009 33,910,334
2 Bengali বাংলা bn 494.6 32,341 1,773,204 353,469
3 Macedonian македонски mk 494.33 79,095 3,360,635 1,072,579
4 Malayalam മലയാളം ml 281.2 36,914 2,109,615 250,010
5 Egyptian Arabic مصرى arz 269.66 12,881 655,259 92,246
6 Hebrew עברית he 256.48 161,763 16,932,384 681,488
7 Thai ไทย th 246.69 89,935 5,955,299 498,699
8 Turkish Türkçe tr 209.77 234,847 15,686,623 1,159,665
9 Bosnian bosanski bs 199.88 52,972 2,684,783 305,666
10 Urdu اردو ur 197.16 53,174 4,031,299 232,471
11 French français fr 187.52 1,549,045 110,205,209 6,829,698
12 Arabic العربية ar 186.62 336,960 16,799,120 1,874,696
13 Spanish español es 175.1 1,128,722 82,767,877 4,680,413
14 Serbo-Croatian srpskohrvatski / српскохрватски sh 177.07 269,814 6,834,170 2,395,460
15 Persian فارسی fa 157.61 425,292 18,138,776 2,345,116
16 Sorani کوردی ckb 135.98 15,051 473,795 92,673
17 Simple English Simple English simple 128.28 116,699 12,290,559 334,866
18 Chinese 中文 zh 124.56 788,959 34,231,486 3,673,425
19 Portuguese português pt 122.51 844,313 41,254,118 3,607,989
20 Russian русский ru 114.6 1,152,015 78,225,116 3,908,769
21 Italian italiano it 103.43 1,147,218 73,727,549 3,793,903
22 Hungarian magyar hu 99.5 267,021 15,840,176 902,931
23 Romanian română ro 96.61 252,488 9,206,308 1,116,885
24 Latvian latviešu lv 94.66 56,361 2,293,838 229,995
25 German Deutsch de 89.42 1,761,975 140,182,244 4,866,435
26 Aragonese aragonés an 82.33 30,224 1,594,722 98,315
27 Korean 한국어 ko 82.16 290,398 14,828,089 960,216
28 Bavarian Boarisch bar 76.71 10,258 434,153 36,203
29 Venetian vèneto vec 75.56 10,439 576,604 31,724
30 Danish dansk da 70.12 191,749 8,167,933 641,851
31 Japanese 日本語 ja 68.34 928,454 54,103,572 2,616,342
32 Sinhalese සිංහල si 68.31 11,354 324,760 47,086
33 Marathi मराठी mr 64.75 40,612 1,321,110 151,153
34 Yiddish ייִדיש yi 63.69 11,202 506,004 34,568
35 Serbian српски / srpski sr 63.26 252,474 10,319,338 817,778
36 Welsh Cymraeg cy 62.64 60,159 5,209,251 137,518
37 Indonesian Bahasa Indonesia id 62.27 348,721 9,202,461 1,435,592
38 Uzbek oʻzbekcha uz 57.93 127,696 2,293,230 641,879
39 Hindi हिन्दी hi 55.73 115,088 2,689,896 476,809
40 Greek Ελληνικά el 45.99 108,829 4,996,469 285,138
41 Kannada ಕನ್ನಡ kn 45.02 16,415 454,316 54,596
42 Finnish suomi fi 44.72 355,987 15,203,623 951,534
43 Icelandic íslenska is 43.48 38,179 1,525,195 103,882
44 Sakha саха тыла sah 42.05 10,606 332,666 31,906
45 Georgian ქართული ka 39.75 85,340 2,858,593 241,830
46 Min Nan Bân-lâm-gú zh-min-nan 38.99 11,295 463,804 28,901
47 Czech čeština cs 38.79 305,510 12,287,278 787,124
48 Tamil தமிழ் ta 37.89 63,479 1,811,721 190,026
49 Mongolian монгол mn 37.19 13,359 427,634 37,474
50 Ukrainian українська uk 36.37 528,800 15,096,970 1,550,986
51 Tagalog Tagalog tl 35.97 63,173 1,517,376 201,118
52 Swahili Kiswahili sw 35.89 26,634 976,820 69,057
53 Afrikaans Afrikaans af 35.03 33,223 1,350,382 81,538
54 Quechua Runa Simi qu 34.73 19,169 653,516 50,604
55 Sanskrit संस्कृतम् sa 34.39 10,211 285,511 29,439
56 Armenian Հայերեն hy 34.4 134,097 2,602,775 467,419
57 Croatian hrvatski hr 34.34 148,674 4,561,628 409,782
58 Cantonese 粵語 zh-yue 33.79 32,899 927,299 93,683
59 Belarusian (Taraškievica) беларуская (тарашкевіца)‎ be-x-old 33.21 54,179 1,816,788 141,236
60 Malagasy Malagasy mg 32.1 47,055 729,569 179,176
61 Lombard lumbaart lmo 31.95 31,290 1,046,177 80,289
62 Low Saxon Plattdüütsch nds 31.64 21,791 761,895 54,603
63 Estonian eesti et 30.89 126,803 4,125,364 324,466
64 Luxembourgish Lëtzebuergesch lb 30.15 41,769 1,855,258 93,158
65 Catalan català ca 29.94 437,900 14,481,865 1,097,578
66 Azerbaijani azərbaycanca az 29.7 101,113 3,232,930 256,161
67 Bulgarian български bg 27.43 166,895 6,675,130 373,737
68 Alemannic Alemannisch als 27.13 17,379 606,248 40,890
69 Albanian shqip sq 26.12 51,742 1,610,989 125,574
70 Norwegian (Bokmål) norsk bokmål no 26.01 432,050 14,497,633 1,015,112
71 Kurdish Kurdî ku 25.98 20,747 660,238 49,787
72 Basque Euskara eu 25.13 202,924 4,809,867 545,533
73 Faroese føroyskt fo 24.48 10,583 306,041 25,779
74 Neapolitan Napulitano nap 23.32 14,193 687,955 28,027
75 Bishnupriya Manipuri বিষ্ণুপ্রিয়া মণিপুরী bpy 23.29 25,138 803,631 57,625
76 Walloon walon wa 22.73 13,483 317,816 34,731
77 Telugu తెలుగు te 21.98 59,138 1,295,374 155,049
78 Scots Scots sco 21.88 26,262 449,172 77,189
79 Slovene slovenščina sl 21.29 142,238 4,424,981 318,261
80 Belarusian беларуская be 21.31 76,132 1,942,231 184,415
81 Tatar татарча/tatarça tt 21.21 64,220 2,017,969 142,945
82 Sicilian sicilianu scn 20.29 24,481 737,172 54,453
83 Amharic አማርኛ am 19.87 16,211 332,154 41,870
84 Punjabi ਪੰਜਾਬੀ pa 19.75 14,406 209,412 43,633
85 Galician galego gl 19.61 116,739 3,459,254 257,890
86 Polish polski pl 19.35 1,067,239 40,599,121 2,146,631
87 Nahuatl Nāhuatl nah 19.22 10,106 397,649 20,056
88 Vietnamese Tiếng Việt vi 19.13 1,108,456 19,865,825 2,989,288
89 Slovak slovenčina sk 18.54 195,145 5,892,680 419,277
90 Esperanto Esperanto eo 17.99 202,624 5,622,136 444,199
91 Breton brezhoneg br 17.88 50,768 1,672,940 104,393
92 Lithuanian lietuvių lt 17.84 167,419 4,821,359 360,898
93 Norwegian (Nynorsk) norsk nynorsk nn 17.61 117,228 2,874,391 267,219
94 Asturian asturianu ast 16.59 19,745 784,354 37,276
95 Volapük Volapük vo 15.47 119,332 3,299,849 247,996
96 Sundanese Basa Sunda su 14.97 17,671 459,562 37,094
97 Nepali नेपाली ne 14.28 26,052 427,692 64,199
98 West Frisian Frysk fy 14.19 30,814 734,465 65,470
99 Malay Bahasa Melayu ms 14.12 268,712 3,849,054 698,910
100 Newar नेपाल भाषा new 12.6 70,888 822,240 192,681
101 Javanese Basa Jawa jv 11.7 47,693 907,546 102,538
102 Interlingua interlingua ia 11.4 14,302 551,294 24,478
103 Swedish svenska sv 10.61 1,944,054 27,674,660 4,497,251
104 Latin Latina la 10.37 111,326 2,889,736 207,370
105 Dutch Nederlands nl 8.87 1,791,341 43,177,670 3,256,197
106 Kazakh қазақша kk 8.36 208,541 2,248,020 489,970
107 Bashkir башҡортса ba 8.31 33,049 448,519 70,925
108 Banyumasan Basa Banyumasan map-bms 7.73 13,055 203,017 26,061
109 Gujarati ગુજરાતી gu 7.58 25,558 373,967 51,738
110 Samogitian žemaitėška bat-smg 7.1 13,680 334,723 23,293
111 Irish Gaeilge ga 6.77 31,544 759,538 53,282
112 Tajik тоҷикӣ tg 6.42 29,835 456,973 56,394
113 Scottish Gaelic Gàidhlig gd 5.5 17,304 477,076 26,949
114 Occitan occitan oc 5.33 87,564 2,084,239 139,943
115 Yoruba Yorùbá yo 5.32 30,985 545,960 53,315
116 Mazandarani مازِرونی mzn 5.31 12,006 128,609 23,947
117 Ido Ido io 5.08 25,979 924,069 37,828
118 Chuvash Чӑвашла cv 4.29 30,084 545,942 48,701
119 Cebuano Cebuano ceb 3.44 1,174,749 5,550,983 2,693,017
120 Waray-Waray Winaray war 3.4 1,169,874 5,814,650 2,617,205
121 Piedmontese Piemontèis pms 1.95 63,615 848,001 93,000
122 Kirghiz Кыргызча ky 1.29 27,411 185,860 42,246
123 Burmese language မြန်မာဘာသာ my 1.06 32,174 219,296 47,635
124 Buginese ᨅᨔ ᨕᨘᨁᨗ bug 0.91 14,089 197,008 18,174
125 Western Panjabi پنجابی pnb 0.45 33,057 411,078 39,974
126 Haitian Kreyòl ayisyen ht 0.25 53,208 705,017 61,118
127 Chechen нохчийн ce 0.21 61,986 362,199 74,760
128 Minangkabau Baso Minangkabau min 0.002 221,059 482,033 227,658
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 877 89 188 19 68 103 9 123 175 115 11 125 26 45 30 36 210 97 15 39 99 18 19 70 62 256 187 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.