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 × 40.43 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 767 = 50.67 × 15.13.

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 878.39 4,629,993 740,210,850 34,069,414
2 Bengali বাংলা bn 492.65 32,619 1,782,137 356,381
3 Macedonian македонски mk 491.35 79,432 3,366,682 1,073,824
4 Malayalam മലയാളം ml 288.5 37,079 2,152,118 253,026
5 Egyptian Arabic مصرى arz 269.27 12,905 656,159 92,350
6 Hebrew עברית he 256.02 162,569 17,019,489 684,071
7 Thai ไทย th 248.66 90,356 5,987,679 503,546
8 Turkish Türkçe tr 209.84 235,524 15,733,455 1,163,204
9 Serbo-Croatian srpskohrvatski / српскохрватски sh 213.18 274,018 7,287,853 2,716,807
10 Bosnian bosanski bs 194.09 53,833 2,691,833 307,188
11 Arabic العربية ar 190 338,494 16,923,033 1,903,190
12 French français fr 188.82 1,554,908 110,778,476 6,879,297
13 Spanish español es 175.31 1,133,399 83,182,002 4,700,912
14 Persian فارسی fa 159.75 427,704 18,272,487 2,377,763
15 Urdu اردو ur 160.78 60,672 4,066,006 252,313
16 Sorani کوردی ckb 140.39 14,885 474,993 92,871
17 Simple English Simple English simple 128.14 117,208 12,308,414 336,624
18 Chinese 中文 zh 126.34 791,738 34,448,664 3,713,720
19 Portuguese português pt 122.99 846,453 41,416,287 3,622,889
20 Russian русский ru 114.75 1,157,635 78,706,325 3,927,957
21 Italian italiano it 103.86 1,151,828 74,089,705 3,815,831
22 Hungarian magyar hu 99.49 268,280 15,909,941 907,296
23 Romanian română ro 96.88 253,184 9,231,993 1,121,930
24 Latvian latviešu lv 94.96 56,582 2,302,090 231,385
25 German Deutsch de 89.38 1,768,834 140,796,752 4,883,235
26 Aragonese aragonés an 82.29 30,239 1,595,288 98,351
27 Korean 한국어 ko 82.24 293,016 14,912,838 971,127
28 Bavarian Boarisch bar 75.81 10,346 435,294 36,392
29 Venetian vèneto vec 75.39 10,457 577,276 31,751
30 Danish dansk da 70 192,315 8,185,796 643,416
31 Sinhalese සිංහල si 68.56 11,414 326,746 47,415
32 Japanese 日本語 ja 68.62 931,449 54,351,979 2,628,055
33 Marathi मराठी mr 64.93 40,689 1,325,321 151,562
34 Indonesian Bahasa Indonesia id 63.73 349,556 9,248,948 1,457,202
35 Welsh Cymraeg cy 63.64 60,223 5,212,947 138,543
36 Serbian српски / srpski sr 65.24 253,182 10,359,576 833,108
37 Yiddish ייִדיש yi 62.59 11,295 506,370 34,680
38 Uzbek oʻzbekcha uz 57.94 127,720 2,294,232 641,962
39 Hindi हिन्दी hi 56.19 115,615 2,705,447 481,050
40 Greek Ελληνικά el 44.65 110,550 5,025,163 287,119
42 Finnish suomi fi 44.6 357,626 15,252,405 955,381
41 Kannada ಕನ್ನಡ kn 43.71 16,954 464,298 55,818
43 Icelandic íslenska is 43.42 38,282 1,527,507 104,147
44 Sakha саха тыла sah 42.14 10,638 333,353 32,052
45 Georgian ქართული ka 39.75 85,828 2,869,176 243,443
46 Min Nan Bân-lâm-gú zh-min-nan 38.98 11,299 463,893 28,911
47 Czech čeština cs 38.72 307,085 12,334,344 791,020
48 Tamil தமிழ் ta 37.59 64,223 1,825,432 191,874
49 Tagalog Tagalog tl 37.15 62,688 1,521,329 201,868
50 Mongolian монгол mn 36.55 13,496 428,608 37,692
51 Ukrainian українська uk 36.47 532,529 15,227,169 1,562,892
52 Swahili Kiswahili sw 35.6 26,766 977,433 69,283
53 Afrikaans Afrikaans af 34.9 33,355 1,353,621 81,791
54 Quechua Runa Simi qu 34.73 19,179 653,719 50,637
55 Sanskrit संस्कृतम् sa 34.49 10,229 286,411 29,514
56 Armenian Հայերեն hy 34.23 136,232 2,645,966 473,368
57 Croatian hrvatski hr 34.2 149,176 4,570,894 410,691
58 Cantonese 粵語 zh-yue 33.49 33,148 929,354 94,232
59 Belarusian (Taraškievica) беларуская (тарашкевіца)‎ be-x-old 33.08 54,362 1,820,117 141,553
60 Malagasy Malagasy mg 32.1 47,060 729,682 179,185
61 Lombard lumbaart lmo 32.02 31,333 1,046,772 80,500
62 Low Saxon Plattdüütsch nds 31.31 21,963 762,959 54,938
63 Estonian eesti et 30.95 127,394 4,146,340 326,160
64 Luxembourgish Lëtzebuergesch lb 30.12 41,916 1,859,194 93,506
65 Catalan català ca 30.1 439,772 14,591,541 1,103,149
66 Azerbaijani azərbaycanca az 29.7 100,924 3,259,065 254,593
67 Bulgarian български bg 27.27 168,001 6,696,418 375,867
68 Alemannic Alemannisch als 27.18 17,431 609,676 40,999
69 Albanian shqip sq 26.28 51,816 1,615,377 126,008
70 Norwegian (Bokmål) norsk bokmål no 25.99 433,548 14,536,495 1,018,657
71 Kurdish Kurdî ku 25.98 20,760 660,909 49,810
72 Basque Euskara eu 25.05 203,767 4,829,571 546,975
73 Faroese føroyskt fo 24.66 10,626 306,988 25,976
74 Neapolitan Napulitano nap 23.31 14,197 688,048 28,033
75 Bishnupriya Manipuri বিষ্ণুপ্রিয়া মণিপুরী bpy 23.29 25,138 803,654 57,623
76 Walloon walon wa 22.66 13,528 318,166 34,834
77 Telugu తెలుగు te 22.28 59,359 1,305,039 156,327
78 Tatar татарча/tatarça tt 21.5 64,374 2,043,519 143,474
79 Scots Scots sco 21.17 26,791 450,783 78,096
80 Belarusian беларуская be 21.36 76,725 1,951,546 186,294
81 Slovene slovenščina sl 21.32 142,539 4,432,748 319,146
82 Sicilian sicilianu scn 20.22 24,534 737,705 54,525
83 Amharic አማርኛ am 19.85 16,229 332,308 41,910
84 Galician galego gl 19.66 117,257 3,476,327 259,214
85 Polish polski pl 19.65 1,071,610 40,791,409 2,166,201
86 Vietnamese Tiếng Việt vi 19.33 1,109,433 20,019,936 2,996,522
87 Nahuatl Nāhuatl nah 19.19 10,117 397,853 20,073
88 Punjabi ਪੰਜਾਬੀ pa 18.93 15,159 213,560 45,655
89 Slovak slovenčina sk 18.53 195,690 5,905,253 420,474
90 Esperanto Esperanto eo 17.83 204,091 5,632,286 446,815
91 Lithuanian lietuvių lt 17.81 167,906 4,829,552 361,861
92 Breton brezhoneg br 17.67 51,109 1,676,342 104,839
93 Norwegian (Nynorsk) norsk nynorsk nn 17.78 117,600 2,880,457 269,170
94 Asturian asturianu ast 16.66 19,781 785,581 37,397
95 Volapük Volapük vo 15.46 119,348 3,300,083 248,010
96 Sundanese Basa Sunda su 15.1 17,697 460,098 37,271
97 West Frisian Frysk fy 14.27 30,919 735,603 65,871
98 Nepali नेपाली ne 14.06 26,516 431,392 65,164
99 Malay Bahasa Melayu ms 13.99 270,602 3,864,203 701,912
100 Newar नेपाल भाषा new 12.6 70,883 822,341 192,697
101 Javanese Basa Jawa jv 11.45 48,169 908,516 103,080
102 Interlingua interlingua ia 11.39 14,310 551,398 24,489
103 Swedish svenska sv 10.8 1,946,048 28,161,254 4,502,960
104 Latin Latina la 10.4 111,523 2,894,344 207,947
105 Dutch Nederlands nl 8.92 1,793,742 43,320,278 3,263,916
106 Kazakh қазақша kk 8.36 208,718 2,254,682 490,124
107 Bashkir башҡортса ba 8.56 33,166 452,692 71,805
108 Gujarati ગુજરાતી gu 7.78 25,575 376,198 52,130
109 Banyumasan Basa Banyumasan map-bms 7.73 13,055 203,045 26,063
110 Samogitian žemaitėška bat-smg 7.1 13,682 334,810 23,297
111 Irish Gaeilge ga 6.64 31,941 764,166 53,782
112 Tajik тоҷикӣ tg 6.24 30,259 457,870 56,895
113 Scottish Gaelic Gàidhlig gd 5.64 17,361 488,419 27,069
114 Mazandarani مازِرونی mzn 5.33 12,011 128,768 23,977
115 Occitan occitan oc 5.32 87,710 2,085,664 140,153
116 Yoruba Yorùbá yo 5.32 30,987 546,043 53,322
117 Ido Ido io 5.07 26,046 924,391 37,924
118 Chuvash Чӑвашла cv 4.32 30,122 546,403 48,830
119 Cebuano Cebuano ceb 3.47 1,208,455 5,648,684 2,789,884
120 Waray-Waray Winaray war 3.44 1,253,595 6,048,825 2,850,278
121 Piedmontese Piemontèis pms 1.96 63,628 848,210 93,114
122 Kirghiz Кыргызча ky 1.31 27,422 186,472 42,358
123 Burmese language မြန်မာဘာသာ my 1.07 32,270 220,458 47,826
124 Buginese ᨅᨔ ᨕᨘᨁᨗ bug 0.91 14,089 197,023 18,173
125 Western Panjabi پنجابی pnb 0.45 33,146 411,713 40,092
126 Haitian Kreyòl ayisyen ht 0.27 53,182 705,719 61,271
127 Chechen нохчийн ce 0.22 62,552 377,024 75,639
128 Minangkabau Baso Minangkabau min 0.002 221,070 482,162 227,701
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 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]

Notes[edit]

  1. List of Wikipedias
  2. At November 2008.