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 853 = 21.69 × 39.32 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 3511 = 59.14 × 59.37.

The smallest depth has Minangkabau Wikipedia which has the depth 0.0018 = 2.11 × 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.

100 000+ articles[edit]

The table shows the list of Wikipedias with over 100,000 articles sorted by Depth.
Data on this page is automatically updated every day (Purge).

N.B.: Table sorted by Depth on 10 April 2014.

No. Language Language (local) Wiki Depth Articles Edits Total
1 English English en 853.1 4,490,654 708,331,266 32,649,785
2 Hebrew עברית he 254.2 156,276 16,242,187 657,635
3 Arabic العربية ar 224.4 273,603 15,535,884 1,581,204
4 Turkish Türkçe tr 210.8 227,214 15,230,842 1,122,885
5 French français fr 177.9 1,493,520 105,019,389 6,417,240
6 Spanish español es 173 1,093,724 79,188,588 4,536,913
7 Persian فارسی fa 172.3 384,701 17,143,506 2,188,916
8 Serbo-Croatian srpskohrvatski / српскохрватски sh 158.4 154,394 3,910,221 1,255,732
9 Simple English Simple English simple 126 111,324 11,338,420 321,890
10 Portuguese português pt 119.1 824,641 39,687,958 3,494,655
11 Chinese 中文 zh 112.5 761,724 32,341,140 3,369,676
12 Russian русский ru 112.2 1,104,490 74,609,052 3,714,789
13 Italian italiano it 99.3 1,113,779 70,547,857 3,631,840
14 Hungarian magyar hu 99 257,993 15,225,694 872,580
15 Romanian română ro 91.4 242,586 8,802,423 1,039,373
16 German Deutsch de 89.6 1,706,970 135,228,026 4,728,530
17 Korean 한국어 ko 81.1 272,881 14,088,033 890,592
18 Danish dansk da 68.7 186,988 7,912,834 621,377
19 Japanese 日本語 ja 66.6 904,396 52,356,534 2,525,677
20 Serbian српски / srpski sr 63 244,504 10,029,799 788,602
21 Uzbek oʻzbekcha uz 57.2 127,519 2,272,362 639,065
22 Indonesian Bahasa Indonesia id 55.2 341,228 8,789,131 1,326,440
23 Greek Ελληνικά el 50.1 100,254 4,719,554 269,920
24 Hindi हिन्दी hi 50 111,052 2,453,568 445,502
25 Finnish suomi fi 45.3 344,832 14,828,075 924,480
26 Armenian Հայերեն hy 39.9 115,351 2,319,847 428,761
27 Czech čeština cs 38.9 292,559 11,771,462 754,751
28 Ukrainian українська uk 37.6 492,739 14,320,601 1,456,532
29 Croatian hrvatski hr 35.1 144,747 4,471,463 401,861
30 Estonian eesti et 31.3 122,619 4,011,069 314,842
31 Basque Euskara eu 30 170,793 4,630,413 468,639
32 Catalan català ca 28.5 425,651 13,573,792 1,061,523
33 Azerbaijani azərbaycanca az 28.1 101,326 3,048,709 257,585
34 Bulgarian български bg 27.8 160,161 6,486,350 358,588
35 Norwegian (Bokmål) norsk bokmål no 26.6 417,414 14,144,482 985,511
36 Slovene slovenščina sl 20.9 140,307 4,350,618 312,371
37 Galician galego gl 19.5 111,941 3,337,934 246,077
38 Esperanto Esperanto eo 18.3 194,630 5,516,772 426,299
39 Slovak slovenčina sk 18.1 191,674 5,770,363 408,957
40 Polish polski pl 18.1 1,039,951 39,216,656 2,053,784
41 Norvegian (Nynorsk) norsk nynorsk nn 18 113,388 2,845,749 258,216
42 Lithuanian lietuvių lt 18 164,422 4,770,468 354,598
43 Vietnamese Tiếng Việt vi 17.7 887,187 16,107,450 2,294,276
44 Malay Bahasa Melayu ms 16.2 247,565 3,748,922 667,460
45 Volapük Volapük vo 15.5 119,132 3,294,853 247,770
46 Swedish svenska sv 11.1 1,616,077 26,457,215 3,603,989
47 Latin Latina la 10.7 105,233 2,815,522 196,292
48 Dutch Nederlands nl 8.5 1,770,758 41,983,340 3,195,130
49 Kazakh қазақша kk 7.9 205,704 2,088,385 483,742
50 Cebuano Cebuano ceb 2.9 893,167 4,534,938 1,879,915
51 Waray-Waray Winaray war 2.8 960,254 4,862,854 1,980,882
52 Minangkabau Baso Minangkabau min 0.002 220,920 480,486 227,424


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 853 90 178 18 67 99 9 119 173 112 11 113 27 45 29 38 211 91 16 39 99 18 18 69 55 254 224 81 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.