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 × 41.37 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 891.74 4,708,052 754,266,473 34,988,274
2 Bengali বাংলা bn 483.47 34,019 1,827,132 371,147
3 Macedonian Македонски mk 481.66 80,523 3,388,916 1,076,579
4 Serbo-Croatian Srpskohrvatski / Српскохрватски sh 357.31 276,791 9,115,535 3,535,021
5 Malayalam മലയാളം ml 289.55 37,883 2,192,511 259,766
6 Hebrew עברית he 258.25 165,628 17,409,418 698,939
7 Egyptian Arabic مصرى arz 274.39 13,364 667,194 98,361
8 Thai ไทย th 252.85 92,272 6,105,533 520,788
9 Turkish Türkçe tr 207.86 240,161 16,012,060 1,180,204
10 Persian فارسی fa 208.35 443,277 19,496,934 2,919,024
11 Arabic العربية ar 200.48 347,080 17,529,474 2,012,029
12 French Français fr 194.85 1,586,131 113,752,663 7,128,745
13 Bosnian Bosanski bs 177.57 57,263 2,746,129 316,189
14 Spanish Español es 176.69 1,153,120 85,182,452 4,786,573
15 Urdu اردو ur 143.66 64,955 4,115,060 261,045
16 Sorani کوردی ckb 140.28 15,177 483,816 94,708
17 Chinese 中文 zh 131.95 809,366 35,540,893 3,882,122
18 Simple English Simple English simple 126.79 120,068 12,388,507 346,021
19 Portuguese Português pt 123.63 863,957 42,263,885 3,710,232
20 Russian Русский ru 115.13 1,185,460 80,609,134 4,029,316
21 Italian Italiano it 106.29 1,172,160 75,901,445 3,917,717
22 Romanian Română ro 96.46 259,448 9,381,098 1,152,635
23 Hungarian Magyar hu 93.85 281,171 16,239,961 934,606
24 Latvian Latviešu lv 93.38 58,494 2,344,773 238,925
25 Ossetian Иронау os 92.77 10,130 479,393 37,373
26 German Deutsch de 88.61 1,806,992 143,910,512 4,967,029
27 Korean 한국어 ko 85.12 302,412 15,364,931 1,021,968
28 Aragonese Aragonés an 81.66 30,446 1,598,903 98,856
29 Venetian Vèneto vec 77.48 10,513 582,656 32,301
30 Bavarian Boarisch bar 74.7 10,604 445,982 37,002
31 Danish Dansk da 69.65 195,323 8,293,699 652,583
32 Japanese 日本語 ja 69.26 944,900 55,325,375 2,673,494
33 Welsh Cymraeg cy 63.55 63,142 5,249,211 147,531
34 Indonesian Bahasa Indonesia id 65.94 354,502 9,432,052 1,504,089
35 Serbian Српски sr 65.25 314,410 11,033,412 1,125,614
36 Marathi मराठी mr 65.07 41,178 1,336,527 153,888
37 Sinhalese සිංහල si 62.82 12,290 336,581 49,732
38 Hindi हिन्दी hi 59.7 117,228 2,792,705 500,777
39 Uzbek O‘zbek uz 58.87 127,842 2,321,304 644,852
40 Yiddish ייִדיש yi 57.82 11,787 509,924 35,403
41 Kannada ಕನ್ನಡ kn 45.3 17,595 482,476 59,011
42 Greek Ελληνικά el 44.53 114,730 5,179,200 298,532
43 Finnish Suomi fi 44.11 365,162 15,482,826 973,220
44 Sakha Саха тыла sah 43.71 10,711 337,108 32,800
45 Icelandic Íslenska is 43.31 38,607 1,535,900 105,052
46 Georgian ქართული ka 39.57 88,580 2,938,200 251,644
47 Czech Čeština cs 38.88 313,761 12,592,315 809,972
48 Tamil தமிழ் ta 37.21 66,722 1,880,724 199,182
49 Tagalog Tagalog tl 36.86 63,199 1,530,952 202,877
50 Ukrainian Українська uk 36.72 550,713 15,737,898 1,622,073
51 Sanskrit संस्कृतम् sa 33.16 10,672 290,425 30,630
52 Mongolian Монгол mn 34.66 14,088 436,617 38,817
53 Quechua Runa Simi qu 34.88 19,239 655,067 50,916
54 Min Nan Bân-lâm-gú zh-min-nan 32.32 12,466 467,386 30,599
55 Afrikaans Afrikaans af 34.44 34,307 1,377,895 84,020
56 Croatian Hrvatski hr 33.86 151,354 4,616,870 415,588
57 Swahili Kiswahili sw 32.75 28,034 982,148 71,244
58 Armenian Հայերեն hy 33.48 145,114 2,820,824 497,846
59 Cantonese 粵語 zh-yue 32.52 34,545 943,447 98,059
60 Belarusian (Taraškievica) Беларуская (тарашкевіца) be-x-old 32.3 55,357 1,835,018 143,264
61 Lombard Lumbaart lmo 32.27 31,546 1,050,101 81,457
62 Norwegian (Bokmål) Norsk (Bokmål) no 31.72 405,433 13,620,496 1,034,851
63 Catalan Català ca 30.8 449,514 15,174,431 1,130,454
64 Estonian Eesti et 30.62 130,392 4,221,783 333,044
65 Low Saxon Plattdüütsch nds 30.68 22,490 766,871 56,220
66 Azerbaijani Azərbaycanca az 30.5 100,124 3,354,033 251,598
67 Luxembourgish Lëtzebuergesch lb 29.72 42,845 1,881,983 95,441
68 Albanian Shqip sq 26.77 52,130 1,633,586 127,468
69 Alemannic Alemannisch als 26.16 18,094 622,594 42,180
70 Kurdish Kurdî ku 25.9 20,922 664,386 50,183
71 Basque Euskara eu 25.29 205,874 4,872,190 555,442
72 Telugu తెలుగు te 24.98 61,127 1,382,865 167,433
73 Malagasy Malagasy mg 11.07 76,323 768,933 208,579
74 Faroese Føroyskt fo 23.25 10,929 314,030 26,131
75 Bishnupriya Manipuri বিষ্ণুপ্রিয়া মণিপুরী bpy 23.31 25,129 803,892 57,602
76 Neapolitan Nnapulitano nap 23.2 14,344 689,698 28,351
77 Walloon Walon wa 22.27 13,710 319,712 35,170
78 Bulgarian Български bg 21.82 188,248 6,833,368 401,369
79 Tatar Татарча tt 21.89 66,090 2,081,735 148,757
80 Slovenian Slovenščina sl 21.66 144,149 4,531,599 323,378
81 Belarusian Беларуская be 21.16 80,108 1,999,417 195,276
82 Sicilian Sicilianu scn 20.11 24,779 741,265 55,062
83 Amharic አማርኛ am 19.94 16,252 333,244 42,019
84 Galician Galego gl 19.92 119,679 3,544,802 266,022
85 Vietnamese Tiếng Việt vi 20 1,112,314 20,524,778 3,020,838
86 Polish Polski pl 19.91 1,090,195 41,685,719 2,210,333
87 Lithuanian Lietuvių lt 19.34 169,916 4,885,781 377,638
88 Punjabi ਪੰਜਾਬੀ pa 18.94 16,622 227,242 50,843
89 Nahuatl Nāhuatl nah 18.68 10,238 400,157 20,174
90 Scots Scots sco 18.01 29,705 460,452 83,344
91 Slovak Slovenčina sk 18.24 199,288 5,970,812 426,857
92 Asturian Asturianu ast 18.12 20,072 791,209 39,055
93 Norwegian (Nynorsk) Nynorsk nn 17.89 118,852 2,900,585 273,097
94 Esperanto Esperanto eo 17.45 209,203 5,682,392 457,066
95 Breton Brezhoneg br 17.18 52,453 1,695,424 107,104
96 West Frisian Frysk fy 18.64 31,408 760,791 73,586
97 Sundanese Basa Sunda su 15.89 17,824 463,297 38,234
98 Volapük Volapük vo 15.38 119,657 3,301,341 248,379
99 Nepali नेपाली ne 15.04 27,096 452,486 67,755
100 Malay Bahasa Melayu ms 14.08 272,591 3,902,270 708,358
101 Newari नेवारी new 12.64 71,162 824,666 193,805
102 Javanese Basa Jawa jv 11.44 48,407 911,200 103,635
103 Interlingua Interlingua ia 11.4 14,377 552,205 24,630
104 Swedish Svenska sv 11.25 1,954,517 29,356,677 4,528,899
105 Latin Latina Latina 10.59 112,714 2,923,924 211,337
106 Dutch Nederlands nl 9.41 1,809,043 44,173,586 3,333,023
107 Bashkir Башҡорт ba 9.29 33,569 464,896 74,541
108 Gujarati ગુજરાતી gu 8.68 25,708 382,477 54,222
109 Kazakh Қазақша kk 8.41 210,604 2,294,046 493,942
110 Banyumasan Basa Banyumasan map-bms 7.77 13,049 203,203 26,078
111 Samogitian Žemaitėška bat-smg 7.07 13,788 335,932 23,480
112 Irish Gaeilge ga 6.4 32,765 773,040 54,836
113 Tajik Тоҷикӣ tg 7.67 30,680 563,606 57,920
114 Scottish Gaelic Gàidhlig gd 5.68 19,068 502,545 30,216
115 Mazandarani مَزِروني mzn 5.39 12,037 129,788 24,077
116 Occitan Occitan oc 5.31 88,349 2,093,734 141,213
117 Yoruba Yorùbá yo 5.26 31,092 546,485 53,384
118 Ido Ido io 5.13 26,273 926,077 38,392
119 Chuvash Чăваш cv 4.49 30,375 558,764 49,536
120 Waray-Waray Winaray war 3.56 1,259,036 6,254,450 2,866,252
121 Cebuano Sinugboanong Binisaya ceb 3.54 1,208,533 5,769,110 2,790,264
122 Piedmontese Piemontèis pms 2 63,704 850,238 93,636
123 Kirghiz Кыргызча ky 1.38 27,486 188,639 42,909
124 Burmese language မ္ရန္‌မာစာ my 1.2 32,763 227,000 49,490
125 Buginese Basa Ugi bug 0.94 14,091 197,157 18,239
126 Western Panjabi شاہ مکھی پنجابی pnb 0.46 33,248 415,536 40,251
127 Haitian Krèyol ayisyen ht 0.3 52,939 707,474 61,448
128 Chechen Нохчийн ce 0.15 79,243 449,133 93,218
129 Minangkabau Bahaso Minangkabau min 0.002 221,165 483,231 227,887
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.