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 875 = 21.75 × 40.23 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 1139 = 53.37 × 21.34.

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 22 September 2014.

No. Language Language (local) Wiki Depth Articles Edits Total
1 English English en 875.05 4,607,600 735,922,886 33,831,315
2 Macedonian македонски mk 496.19 78,890 3,357,070 1,071,858
3 Bengali বাংলা bn 496.1 32,198 1,768,893 352,208
4 Malayalam മലയാളം ml 280.87 36,723 2,097,827 248,577
5 Egyptian Arabic مصرى arz 271.28 12,836 654,690 92,156
6 Hebrew עברית he 256.64 161,466 16,900,883 680,511
7 Serbo-Croatian srpskohrvatski / српскохрватски sh 247.56 217,062 6,612,443 2,176,423
8 Thai ไทย th 245.68 89,783 5,934,654 497,051
9 Turkish Türkçe tr 209.64 234,537 15,663,744 1,157,756
10 Bosnian bosanski bs 201.96 52,655 2,681,864 305,005
11 Urdu اردو ur 197.41 53,045 4,028,518 231,838
12 Arabic العربية ar 188.15 333,674 16,723,155 1,860,163
13 French français fr 186.87 1,546,207 109,950,225 6,804,301
14 Spanish español es 175 1,126,552 82,572,143 4,671,126
15 Persian فارسی fa 157.83 424,443 18,086,712 2,344,104
16 Sorani کوردی ckb 139 14,885 472,854 92,505
17 Simple English Simple English simple 128.32 116,473 12,278,890 334,111
18 Chinese 中文 zh 124.01 787,114 34,139,775 3,655,185
19 Portuguese português pt 123.18 840,457 41,172,440 3,597,860
20 Russian русский ru 114.55 1,149,235 78,003,913 3,899,360
21 Italian italiano it 103.32 1,144,772 73,556,723 3,783,920
22 Hungarian magyar hu 99.37 266,564 15,794,318 901,336
23 Romanian română ro 96.22 252,297 9,181,807 1,114,524
24 Latvian latviešu lv 94.7 56,236 2,290,898 229,410
25 German Deutsch de 89.41 1,759,111 139,904,308 4,858,919
26 Aragonese aragonés an 82.38 30,202 1,594,287 98,251
27 Korean 한국어 ko 82.22 289,369 14,792,573 956,619
28 Bavarian Boarisch bar 77.05 10,221 433,648 36,112
29 Venetian vèneto vec 75.25 10,434 576,200 31,646
30 Danish dansk da 70.19 191,473 8,157,257 641,219
31 Japanese 日本語 ja 68.26 927,160 54,003,181 2,611,693
32 Sinhalese සිංහල si 67.89 11,358 324,108 46,991
33 Marathi मराठी mr 64.66 40,579 1,319,949 150,910
34 Yiddish ייִדיש yi 63.79 11,191 505,885 34,549
35 Serbian српски / srpski sr 63.25 252,173 10,308,431 816,669
36 Welsh Cymraeg cy 62.51 60,143 5,207,888 137,374
37 Indonesian Bahasa Indonesia id 62.29 348,310 9,190,187 1,434,287
38 Uzbek oʻzbekcha uz 57.91 127,698 2,292,914 641,841
39 Hindi हिन्दी hi 55.48 114,683 2,672,896 474,639
40 Greek Ελληνικά el 46 108,514 4,984,262 284,284
41 Kannada ಕನ್ನಡ kn 45.17 16,356 453,018 54,478
42 Finnish suomi fi 44.77 355,217 15,183,104 949,646
43 Icelandic íslenska is 43.45 38,169 1,524,638 103,830
44 Sakha саха тыла sah 42.22 10,547 332,050 31,734
45 Georgian ქართული ka 39.71 85,079 2,852,551 240,878
46 Min Nan Bân-lâm-gú zh-min-nan 39.14 11,269 463,655 28,857
47 Czech čeština cs 38.81 304,846 12,266,044 785,424
48 Tamil தமிழ் ta 37.93 63,295 1,807,882 189,494
49 Mongolian монгол mn 37.36 13,317 427,251 37,399
50 Ukrainian українська uk 36.37 526,744 15,039,070 1,544,826
51 Swahili Kiswahili sw 35.95 26,595 976,574 68,971
52 Tagalog Tagalog tl 35.93 63,071 1,509,855 201,020
53 Afrikaans Afrikaans af 35.17 33,116 1,348,944 81,341
54 Quechua Runa Simi qu 34.74 19,166 653,487 50,598
55 Croatian hrvatski hr 34.49 148,242 4,556,226 409,115
56 Sanskrit संस्कृतम् sa 34.29 10,210 285,339 29,401
57 Armenian Հայերեն hy 34.27 133,223 2,581,987 463,750
58 Cantonese 粵語 zh-yue 34.08 32,727 926,021 93,405
59 Belarusian (Taraškievica) беларуская (тарашкевіца)‎ be-x-old 33.18 54,136 1,814,971 141,076
60 Malagasy Malagasy mg 32.1 47,052 729,522 179,166
61 Lombard lumbaart lmo 31.96 31,255 1,045,918 80,172
62 Low Saxon Plattdüütsch nds 31.73 21,734 761,365 54,485
63 Estonian eesti et 30.9 126,519 4,118,750 323,664
64 Luxembourgish Lëtzebuergesch lb 30.17 41,719 1,852,993 93,073
65 Catalan català ca 29.91 437,176 14,448,591 1,095,496
66 Azerbaijani azərbaycanca az 29.6 101,028 3,223,950 255,727
67 Bulgarian български bg 27.49 166,470 6,665,176 372,934
68 Alemannic Alemannisch als 27.13 17,349 605,564 40,806
69 Norwegian (Bokmål) norsk bokmål no 26.1 430,819 14,479,705 1,013,025
70 Albanian shqip sq 26.08 51,689 1,609,094 125,380
71 Kurdish Kurdî ku 25.98 20,737 659,895 49,762
72 Basque Euskara eu 25.24 200,557 4,760,304 539,858
73 Faroese føroyskt fo 24.48 10,559 305,744 25,707
74 Bishnupriya Manipuri বিষ্ণুপ্রিয়া মণিপুরী bpy 23.29 25,138 803,616 57,622
75 Neapolitan Napulitano nap 23.24 14,192 687,883 27,995
76 Walloon walon wa 22.73 13,472 317,661 34,700
77 Scots Scots sco 22.31 25,960 448,237 76,671
78 Telugu తెలుగు te 21.85 59,032 1,290,856 154,495
79 Slovene slovenščina sl 21.3 142,144 4,422,214 318,101
80 Belarusian беларуская be 21.26 75,842 1,937,961 183,420
81 Tatar татарча/tatarça tt 21.17 64,106 2,015,001 142,563
82 Sicilian sicilianu scn 20.15 24,464 735,470 54,306
83 Punjabi ਪੰਜਾਬੀ pa 20.13 14,091 207,637 42,793
84 Amharic አማርኛ am 19.87 16,205 332,064 41,849
85 Galician galego gl 19.6 116,549 3,455,011 257,382
86 Nahuatl Nāhuatl nah 19.34 10,066 397,467 19,994
87 Polish polski pl 19.27 1,065,513 40,484,072 2,141,331
88 Vietnamese Tiếng Việt vi 19 1,108,215 19,754,498 2,986,215
89 Slovak slovenčina sk 18.56 194,872 5,886,422 418,777
90 Esperanto Esperanto eo 18.03 202,036 5,616,971 442,919
91 Breton brezhoneg br 17.91 50,693 1,671,772 104,274
92 Lithuanian lietuvių lt 17.86 167,179 4,817,787 360,431
93 Norwegian (Nynorsk) norsk nynorsk nn 17.6 116,992 2,872,334 266,506
94 Asturian asturianu ast 16.59 19,732 784,059 37,248
95 Volapük Volapük vo 15.47 119,332 3,299,818 247,992
96 Sundanese Basa Sunda su 14.69 17,663 459,016 36,843
97 Nepali नेपाली ne 14.18 26,033 426,776 63,991
98 West Frisian Frysk fy 14.11 30,723 733,450 65,103
99 Malay Bahasa Melayu ms 14.09 268,639 3,846,693 698,302
100 Newar नेपाल भाषा new 12.59 70,886 822,195 192,656
101 Javanese Basa Jawa jv 11.7 47,685 907,390 102,513
102 Interlingua interlingua ia 11.39 14,301 551,164 24,469
103 Swedish svenska sv 10.58 1,943,237 27,581,597 4,495,341
104 Latin Latina la 10.36 111,161 2,886,538 206,976
105 Dutch Nederlands nl 8.85 1,790,196 43,116,265 3,253,096
106 Kazakh қазақша kk 8.35 208,472 2,244,635 489,931
107 Bashkir башҡортса ba 8.28 33,007 447,328 70,786
108 Banyumasan Basa Banyumasan map-bms 7.73 13,054 203,003 26,055
109 Gujarati ગુજરાતી gu 7.51 25,551 373,578 51,576
110 Samogitian žemaitėška bat-smg 7.09 13,681 334,611 23,290
111 Irish Gaeilge ga 6.79 31,485 758,924 53,205
112 Tajik тоҷикӣ tg 6.41 29,827 456,286 56,370
113 Scottish Gaelic Gàidhlig gd 5.5 17,278 476,727 26,906
114 Occitan occitan oc 5.33 87,533 2,083,758 139,900
115 Yoruba Yorùbá yo 5.32 30,984 545,884 53,306
116 Mazandarani مازِرونی mzn 5.31 12,000 128,565 23,924
117 Ido Ido io 5.09 25,952 923,931 37,788
118 Chuvash Чӑвашла cv 4.28 30,082 545,864 48,674
119 Cebuano Cebuano ceb 3.45 1,167,677 5,533,948 2,676,699
120 Waray-Waray Winaray war 3.42 1,142,224 5,745,385 2,548,147
121 Piedmontese Piemontèis pms 1.94 63,605 847,868 92,940
122 Kirghiz Кыргызча ky 1.28 27,409 185,706 42,220
123 Burmese language မြန်မာဘာသာ my 1.06 32,167 219,206 47,611
124 Buginese ᨅᨔ ᨕᨘᨁᨗ bug 0.91 14,089 196,999 18,171
125 Western Panjabi پنجابی pnb 0.45 33,033 410,774 39,945
126 Haitian Kreyòl ayisyen ht 0.25 53,216 704,905 61,107
127 Chechen нохчийн ce 0.22 60,211 359,431 72,889
128 Minangkabau Baso Minangkabau min 0.002 221,056 481,974 227,647
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 875 89 187 19 68 103 9 123 175 115 11 124 26 45 30 36 210 96 15 39 99 18 19 70 62 257 188 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.