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 888 = 21.25 × 41.78 and is the deepest one for Wikipedias with number of articles greater than 10000.

The largest depth for the unblocked Wikipedias has Ripuarian Wikipedia which has the depth 1410 = 215.6 × 6.54.

The smallest depth has Minangkabau Wikipedia which has the depth 0.0061 = 4.12 × 0.0015.

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 31 May 2015.

No. Language Language (local) Wiki Depth Articles Edits Total
1 English English en 887.97 4,906,726 778,348,097 36,622,710
2 Bengali বাংলা bn 486.29 36,231 1,935,534 398,977
3 Serbo-Croatian Srpskohrvatski / Српскохрватски sh 385.15 406,411 17,173,326 4,480,292
4 Malayalam മലയാളം ml 284.97 39,280 2,237,905 269,302
5 Thai ไทย th 267.25 95,943 6,363,727 562,078
6 Egyptian Arabic مصرى arz 249.31 14,225 685,480 100,022
7 Hebrew עברית he 253.06 174,223 18,068,669 732,094
8 Turkish Türkçe tr 228.98 248,335 16,659,068 1,296,787
9 Persian فارسی fa 209.86 459,542 20,211,266 3,042,375
10 Arabic العربية ar 214 373,700 18,895,207 2,267,427
11 French Français fr 205.2 1,638,735 118,706,480 7,564,714
12 Spanish Español es 189.93 1,184,064 88,820,050 5,090,799
13 Simple English Simple English simple 171.96 113,688 12,540,772 369,641
14 Urdu اردو ur 163.05 72,591 4,331,054 327,473
15 Bosnian Bosanski bs 159.26 61,799 2,818,472 327,752
16 Chinese 中文 zh 147.47 828,411 37,438,445 4,196,390
17 Sorani کوردی ckb 137.37 15,490 490,923 95,612
18 Macedonian Македонски mk 136.09 82,508 4,169,799 368,726
19 Portuguese Português pt 130.14 878,800 43,727,531 3,855,739
20 Russian Русский ru 125.43 1,233,790 84,120,003 4,390,761
21 Italian Italiano it 108.89 1,208,191 78,842,961 4,074,103
22 German Deutsch de 97.46 1,830,606 148,950,871 5,210,664
23 Ossetian Иронау os 94.09 10,188 481,990 37,899
24 Hindi हिन्दी hi 98.2 100,321 2,953,610 515,737
25 Latvian Latviešu lv 92.88 61,518 2,430,929 252,652
26 Korean 한국어 ko 86.65 319,863 16,188,325 1,093,854
27 Sinhalese සිංහල si 85.49 11,275 346,234 51,469
28 Hungarian Magyar hu 75.86 325,375 16,867,105 1,023,483
29 Aragonese Aragonés an 81.67 30,637 1,608,361 99,505
30 Venetian Vèneto vec 77.6 10,590 589,055 32,503
31 Romanian Română ro 76.96 326,911 9,944,053 1,404,804
32 Indonesian Bahasa Indonesia id 76.08 361,408 10,500,964 1,586,781
33 Bavarian Boarisch bar 54.68 12,704 464,464 40,416
34 Danish Dansk da 70.09 203,593 8,528,747 687,520
35 Marathi मराठी mr 72.03 41,997 1,385,061 165,030
36 Japanese 日本語 ja 70.7 972,497 57,031,515 2,776,882
37 Greek Ελληνικά el 68.12 107,876 5,443,571 325,647
38 Kannada ಕನ್ನಡ kn 67.23 16,172 530,042 61,244
39 Serbian Српски sr 66.39 321,646 11,411,705 1,155,636
40 Welsh Cymraeg cy 64.13 63,880 5,276,808 150,183
41 Uzbek O‘zbek uz 59.85 127,866 2,345,485 647,675
42 Sakha Саха тыла sah 50.72 10,411 340,343 33,763
43 Yiddish ייִדיש yi 48.3 12,771 518,016 36,251
44 Sanskrit संस्कृतम् sa 49.01 9,976 302,110 33,090
45 Finnish Suomi fi 46.03 374,671 15,872,684 1,018,570
46 Icelandic Íslenska is 43.94 39,468 1,562,760 108,359
47 Czech Čeština cs 41.53 325,394 13,077,426 864,573
48 Amharic አማርኛ am 41.23 12,951 341,582 42,171
49 Mongolian Монгол mn 41.26 14,575 457,931 43,397
50 Tamil தமிழ் ta 40.97 67,193 1,949,701 207,509
51 Tagalog Tagalog tl 37.95 63,416 1,550,175 205,747
52 Ukrainian Українська uk 36.4 579,419 16,600,934 1,697,155
53 Georgian ქართული ka 35.61 96,714 3,038,146 268,190
54 Telugu తెలుగు te 36.68 60,248 1,532,666 188,060
55 Afrikaans Afrikaans af 34.46 35,898 1,418,390 88,553
56 Albanian Shqip sq 35.03 50,674 1,682,888 135,910
57 Quechua Runa Simi qu 34.88 19,328 656,957 51,191
58 Croatian Hrvatski hr 34.46 154,960 4,718,576 429,380
59 Faroese Føroyskt fo 35.37 11,262 328,348 32,255
60 Azerbaijani Azərbaycanca az 34 97,325 3,505,896 248,275
61 Norwegian (Bokmål) Norsk (Bokmål) no 33.88 414,164 14,018,282 1,084,770
62 Lombard Lumbaart lmo 32.47 31,909 1,054,326 82,889
63 Swahili Kiswahili sw 31.46 29,132 994,109 73,587
64 Cantonese 粵語 zh-yue 31.86 37,080 977,741 105,984
65 Belarusian (Taraškievica) Беларуская (тарашкевіца) be-x-old 31.83 56,703 1,870,673 146,118
66 Catalan Català ca 31.06 466,165 15,789,791 1,174,792
67 Estonian Eesti et 30.78 136,038 4,343,960 350,402
68 Low Saxon Plattdüütsch nds 31.52 23,453 781,136 59,924
69 Luxembourgish Lëtzebuergesch lb 29.91 43,906 1,917,394 98,261
70 Armenian Հայերեն hy 28.35 172,478 3,254,905 549,942
71 Min Nan Bân-lâm-gú zh-min-nan 30.81 17,456 496,760 47,382
72 Kurdish Kurdî ku 26.56 21,148 672,435 51,235
73 Basque Euskara eu 26.31 208,363 5,065,100 565,501
74 Alemannic Alemannisch als 25.34 19,330 651,857 44,854
75 Neapolitan Nnapulitano nap 24.23 14,320 691,743 28,672
76 Slovenian Slovenščina sl 24.18 146,516 4,634,636 342,321
77 Bulgarian Български bg 23.51 203,354 7,147,699 451,055
78 Scottish Gaelic Gàidhlig gd 23.39 12,997 513,544 27,560
79 Bishnupriya Manipuri বিষ্ণুপ্রিয়া মণিপুরী bpy 23.52 25,059 804,316 57,572
80 Punjabi ਪੰਜਾਬੀ pa 23.14 17,571 256,797 57,597
81 Walloon Walon wa 22.66 13,791 322,277 35,614
82 Tatar Татарча tt 22.62 66,964 2,105,003 152,769
83 Polish Polski pl 21.44 1,119,995 43,031,773 2,325,758
84 Belarusian Беларуская be 17.01 93,452 2,104,668 217,316
85 Galician Galego gl 20.89 123,368 3,686,614 278,285
86 West Frisian Frysk fy 20.53 32,083 785,487 77,847
87 Nepali नेपाली ne 19.96 26,433 483,961 71,978
88 Sicilian Sicilianu scn 20.2 25,207 746,605 56,327
89 Vietnamese Tiếng Việt vi 19.95 1,134,300 21,266,131 3,054,567
90 Lithuanian Lietuvių lt 19.86 172,630 4,963,892 387,598
91 Nahuatl Nāhuatl nah 17.98 10,698 406,233 21,015
92 Asturian Asturianu ast 9.97 26,431 824,337 46,179
93 Norwegian (Nynorsk) Nynorsk nn 18.19 121,005 2,941,163 280,329
94 Slovak Slovenčina sk 18.09 205,257 6,096,385 439,681
95 Javanese Basa Jawa jv 17.9 48,472 953,005 121,787
96 Scots Scots sco 17.23 32,016 475,871 89,711
97 Esperanto Esperanto eo 17.1 216,199 5,775,456 471,680
98 Breton Brezhoneg br 16.76 54,261 1,728,962 110,399
99 Sundanese Basa Sunda su 16.61 18,045 469,609 39,324
100 Malay Bahasa Melayu ms 15.61 274,195 4,003,287 739,865
101 Volapük Volapük vo 15.24 120,208 3,305,448 249,007
102 Newari नेवारी new 12.25 72,367 828,617 195,321
103 Tajik Тоҷикӣ tg 12.65 32,581 663,829 70,285
104 Bashkir Башҡорт ba 12.79 34,830 522,872 85,068
105 Interlingua Interlingua ia 12.13 14,448 554,895 25,164
106 Swedish Svenska sv 11.62 1,969,873 30,042,818 4,597,029
107 Dutch Nederlands nl 10.82 1,826,446 45,433,457 3,492,211
108 Malagasy Malagasy mg 10.74 79,330 806,648 212,921
109 Latin Latina Latina 10.32 118,405 3,000,555 221,834
110 Gujarati ગુજરાતી gu 10.52 25,570 394,356 57,134
111 Kazakh Қазақша kk 8.89 211,962 2,416,630 499,250
112 Banyumasan Basa Banyumasan map-bms 8.27 12,937 205,421 26,233
113 Samogitian Žemaitėška bat-smg 6.82 14,119 340,436 23,888
114 Ido Ido io 6.01 26,040 932,410 39,118
115 Irish Gaeilge ga 5.7 35,150 793,889 57,789
116 Mazandarani مَزِروني mzn 5.98 12,048 132,670 24,786
117 Occitan Occitan oc 5.54 88,294 2,108,809 142,247
118 Yoruba Yorùbá yo 5.3 31,072 547,799 53,395
119 Chuvash Чăваш cv 3.93 32,927 566,831 52,874
120 Waray-Waray Winaray war 3.57 1,259,128 6,261,837 2,868,731
121 Cebuano Sinugboanong Binisaya ceb 3.53 1,211,340 5,776,532 2,793,543
122 Burmese language မ္ရန္‌မာစာ my 2.37 31,100 249,292 53,219
123 Piedmontese Piemontèis pms 2.09 63,799 853,123 94,483
124 Kirghiz Кыргызча ky 0.92 31,210 203,306 45,369
125 Buginese Basa Ugi bug 0.94 14,104 197,596 18,261
126 Western Panjabi شاہ مکھی پنجابی pnb 0.46 33,878 422,163 41,068
127 Haitian Krèyol ayisyen ht 0.36 52,457 709,896 61,735
128 Chechen Нохчийн ce 0.16 97,520 782,468 112,526
129 Minangkabau Bahaso Minangkabau min 0.006 221,618 947,231 230,155
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 888 97 205 21 71 109 11 130 190 125 12 147 34 46 31 36 229 77 15 42 76 17 18 70 76 253 214 87 20 66
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.