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 878 = 21.73 × 40.4 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 766 = 50.97 × 15.02.

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 19 October 2014.

No. Language Language (local) Wiki Depth Articles Edits Total
1 English English en 877.98 4,627,446 739,717,309 34,041,392
2 Bengali বাংলা bn 492.86 32,581 1,780,656 355,996
3 Macedonian македонски mk 492.2 79,351 3,365,640 1,073,660
4 Malayalam മലയാളം ml 287.06 37,052 2,143,377 252,530
5 Egyptian Arabic مصرى arz 269.88 12,890 656,065 92,329
6 Hebrew עברית he 256.25 162,434 17,005,464 683,871
7 Thai ไทย th 248.42 90,284 5,983,212 502,792
8 Turkish Türkçe tr 209.84 235,434 15,726,084 1,162,812
9 Serbo-Croatian srpskohrvatski / српскохрватски sh 206.52 273,889 7,217,141 2,666,264
10 Bosnian bosanski bs 194.26 53,790 2,690,759 307,049
11 Arabic العربية ar 189.74 338,223 16,905,294 1,900,171
12 French français fr 188.5 1,553,976 110,676,990 6,869,352
13 Spanish español es 175.29 1,132,507 83,111,743 4,696,947
14 Persian فارسی fa 159.69 427,109 18,255,448 2,373,140
15 Urdu اردو ur 150.06 60,323 4,045,717 240,486
16 Sorani کوردی ckb 140.42 14,881 474,894 92,853
17 Simple English Simple English simple 128.15 117,129 12,305,498 336,347
18 Chinese 中文 zh 126.08 791,337 34,417,618 3,707,819
19 Portuguese português pt 122.89 846,159 41,388,139 3,620,477
20 Russian русский ru 114.75 1,156,798 78,644,512 3,925,164
21 Italian italiano it 103.79 1,151,107 74,036,770 3,812,116
22 Hungarian magyar hu 99.49 268,037 15,898,549 906,399
23 Romanian română ro 96.81 253,083 9,227,179 1,121,066
24 Latvian latviešu lv 94.93 56,547 2,300,768 231,196
25 German Deutsch de 89.38 1,767,742 140,694,261 4,880,314
26 Aragonese aragonés an 82.3 30,237 1,595,216 98,345
27 Korean 한국어 ko 82.18 292,651 14,900,814 969,292
28 Bavarian Boarisch bar 75.88 10,334 435,105 36,354
29 Venetian vèneto vec 75.31 10,457 577,204 31,736
30 Danish dansk da 70.01 192,222 8,182,753 643,141
31 Sinhalese සිංහල si 68.54 11,404 326,381 47,373
32 Japanese 日本語 ja 68.58 931,066 54,318,361 2,626,502
33 Marathi मराठी mr 64.92 40,679 1,325,016 151,510
34 Indonesian Bahasa Indonesia id 63.6 349,507 9,243,944 1,455,608
35 Welsh Cymraeg cy 63.48 60,210 5,212,325 138,374
36 Serbian српски / srpski sr 63.33 253,064 10,340,185 820,310
37 Yiddish ייִדיש yi 62.95 11,264 506,261 34,643
38 Uzbek oʻzbekcha uz 57.93 127,719 2,294,135 641,949
39 Hindi हिन्दी hi 56.14 115,551 2,703,994 480,519
40 Greek Ελληνικά el 45.23 109,975 5,020,173 286,729
42 Finnish suomi fi 44.62 357,307 15,244,174 954,595
41 Kannada ಕನ್ನಡ kn 43.77 16,924 463,931 55,729
43 Icelandic íslenska is 43.43 38,247 1,526,912 104,043
44 Sakha саха тыла sah 42.13 10,635 333,286 32,038
45 Georgian ქართული ka 39.73 85,773 2,867,458 243,244
46 Min Nan Bân-lâm-gú zh-min-nan 38.99 11,298 463,885 28,908
47 Czech čeština cs 38.73 306,840 12,325,770 790,427
48 Tamil தமிழ் ta 37.66 64,103 1,823,985 191,614
49 Tagalog Tagalog tl 37.15 62,682 1,521,111 201,854
50 Mongolian монгол mn 36.62 13,479 428,484 37,663
51 Ukrainian українська uk 36.47 531,892 15,212,043 1,560,757
52 Swahili Kiswahili sw 35.61 26,754 977,344 69,255
53 Afrikaans Afrikaans af 34.9 33,342 1,353,019 81,762
54 Quechua Runa Simi qu 34.74 19,175 653,650 50,626
55 Sanskrit संस्कृतम् sa 34.46 10,230 286,363 29,507
56 Armenian Հայերեն hy 34.31 135,825 2,639,850 472,397
57 Croatian hrvatski hr 34.22 149,117 4,569,381 410,579
58 Cantonese 粵語 zh-yue 33.57 33,100 929,042 94,150
59 Belarusian (Taraškievica) беларуская (тарашкевіца)‎ be-x-old 33.09 54,337 1,819,400 141,504
60 Malagasy Malagasy mg 32.1 47,060 729,667 179,183
61 Lombard lumbaart lmo 32.03 31,318 1,046,635 80,457
62 Low Saxon Plattdüütsch nds 31.41 21,919 762,710 54,868
63 Estonian eesti et 30.94 127,294 4,143,417 325,869
64 Luxembourgish Lëtzebuergesch lb 30.1 41,893 1,857,603 93,436
65 Catalan català ca 30.03 439,504 14,558,767 1,102,120
66 Azerbaijani azərbaycanca az 29.6 100,904 3,256,711 254,440
67 Bulgarian български bg 27.29 167,862 6,693,029 375,580
68 Alemannic Alemannisch als 27.12 17,409 607,126 40,957
69 Albanian shqip sq 26.21 51,812 1,614,420 125,873
70 Norwegian (Bokmål) norsk bokmål no 25.98 433,385 14,529,406 1,018,162
71 Kurdish Kurdî ku 25.98 20,759 660,798 49,807
72 Basque Euskara eu 25.06 203,673 4,828,709 546,805
73 Faroese føroyskt fo 24.65 10,620 306,903 25,951
74 Neapolitan Napulitano nap 23.31 14,197 688,044 28,033
75 Bishnupriya Manipuri বিষ্ণুপ্রিয়া মণিপুরী bpy 23.29 25,138 803,652 57,623
76 Walloon walon wa 22.65 13,519 318,066 34,802
77 Telugu తెలుగు te 22.22 59,326 1,303,319 156,117
78 Tatar татарча/tatarça tt 21.51 64,354 2,043,144 143,425
79 Scots Scots sco 21.32 26,675 450,478 77,890
80 Belarusian беларуская be 21.33 76,625 1,949,962 185,875
81 Slovene slovenščina sl 21.3 142,487 4,431,236 318,905
82 Sicilian sicilianu scn 20.25 24,520 737,613 54,516
83 Amharic አማርኛ am 19.85 16,229 332,300 41,910
84 Galician galego gl 19.65 117,177 3,474,138 259,001
85 Polish polski pl 19.56 1,070,944 40,757,816 2,161,703
86 Vietnamese Tiếng Việt vi 19.3 1,109,309 20,000,829 2,995,562
87 Nahuatl Nāhuatl nah 19.19 10,117 397,833 20,073
88 Punjabi ਪੰਜਾਬੀ pa 18.92 15,118 213,185 45,494
89 Slovak slovenčina sk 18.53 195,611 5,902,861 420,301
90 Esperanto Esperanto eo 17.85 203,856 5,630,404 446,346
91 Lithuanian lietuvių lt 17.81 167,820 4,827,745 361,676
92 Breton brezhoneg br 17.69 51,063 1,675,753 104,767
93 Norwegian (Nynorsk) norsk nynorsk nn 17.72 117,566 2,879,401 268,783
94 Asturian asturianu ast 16.56 19,775 784,701 37,326
95 Volapük Volapük vo 15.46 119,347 3,300,073 248,009
96 Sundanese Basa Sunda su 15.06 17,693 459,993 37,225
97 West Frisian Frysk fy 14.27 30,908 735,480 65,843
98 Nepali नेपाली ne 14.24 26,329 430,718 64,890
99 Malay Bahasa Melayu ms 13.98 270,516 3,860,386 701,658
100 Newar नेपाल भाषा new 12.6 70,885 822,329 192,693
101 Javanese Basa Jawa jv 11.45 48,165 908,411 103,058
102 Interlingua interlingua ia 11.39 14,310 551,392 24,489
103 Swedish svenska sv 10.77 1,945,727 28,084,133 4,501,906
104 Latin Latina la 10.4 111,495 2,893,244 207,853
105 Dutch Nederlands nl 8.91 1,793,363 43,296,805 3,262,565
106 Kazakh қазақша kk 8.37 208,643 2,253,500 490,110
107 Bashkir башҡортса ba 8.33 33,147 450,780 71,167
108 Gujarati ગુજરાતી gu 7.75 25,575 376,079 52,076
109 Banyumasan Basa Banyumasan map-bms 7.73 13,055 203,037 26,059
110 Samogitian žemaitėška bat-smg 7.1 13,682 334,771 23,296
111 Irish Gaeilge ga 6.65 31,906 763,925 53,735
112 Tajik тоҷикӣ tg 6.24 30,235 457,775 56,861
113 Scottish Gaelic Gàidhlig gd 5.62 17,344 488,150 27,012
114 Mazandarani مازِرونی mzn 5.33 12,010 128,747 23,969
115 Occitan occitan oc 5.32 87,693 2,085,403 140,130
116 Yoruba Yorùbá yo 5.32 30,987 546,034 53,320
117 Ido Ido io 5.07 26,038 924,357 37,911
118 Chuvash Чӑвашла cv 4.31 30,119 546,358 48,819
119 Cebuano Cebuano ceb 3.46 1,208,452 5,646,752 2,787,967
120 Waray-Waray Winaray war 3.44 1,235,210 5,998,824 2,800,354
121 Piedmontese Piemontèis pms 1.96 63,626 848,187 93,105
122 Kirghiz Кыргызча ky 1.3 27,421 186,390 42,331
123 Burmese language မြန်မာဘာသာ my 1.07 32,238 220,216 47,778
124 Buginese ᨅᨔ ᨕᨘᨁᨗ bug 0.91 14,089 197,023 18,173
125 Western Panjabi پنجابی pnb 0.45 33,144 411,669 40,080
126 Haitian Kreyòl ayisyen ht 0.26 53,186 705,524 61,215
127 Chechen нохчийн ce 0.22 62,548 376,933 75,593
128 Minangkabau Baso Minangkabau min 0.002 221,070 482,133 227,695
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 878 89 189 20 69 104 9 123 175 115 11 126 26 45 30 36 210 97 15 39 99 18 19 70 64 256 190 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.