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 × 40.41 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 878.01 4,628,382 739,855,577 34,049,582
2 Bengali বাংলা bn 492.74 32,596 1,781,120 356,146
3 Macedonian македонски mk 492.07 79,365 3,365,890 1,073,706
4 Malayalam മലയാളം ml 287.27 37,059 2,144,626 252,645
5 Egyptian Arabic مصرى arz 269.27 12,904 656,119 92,342
6 Hebrew עברית he 255.96 162,485 17,009,688 683,640
7 Thai ไทย th 248.48 90,307 5,984,492 503,022
8 Turkish Türkçe tr 209.82 235,457 15,728,081 1,162,844
9 Serbo-Croatian srpskohrvatski / српскохрватски sh 208.83 273,961 7,236,893 2,685,809
10 Bosnian bosanski bs 194.28 53,794 2,690,984 307,084
11 Arabic العربية ar 189.82 338,281 16,909,751 1,900,943
12 French français fr 188.63 1,554,231 110,708,237 6,872,866
13 Spanish español es 175.3 1,132,727 83,131,550 4,697,970
14 Persian فارسی fa 159.74 427,165 18,259,027 2,373,798
15 Urdu اردو ur 154.57 60,381 4,051,133 244,986
16 Sorani کوردی ckb 140.41 14,882 474,934 92,858
17 Simple English Simple English simple 128.15 117,151 12,306,516 336,425
18 Chinese 中文 zh 126.17 791,430 34,427,061 3,709,587
19 Portuguese português pt 122.91 846,262 41,395,020 3,621,084
20 Russian русский ru 114.74 1,157,052 78,662,068 3,925,940
21 Italian italiano it 103.81 1,151,277 74,051,036 3,813,139
22 Hungarian magyar hu 99.5 268,117 15,901,784 906,743
23 Romanian română ro 96.83 253,102 9,228,393 1,121,266
24 Latvian latviešu lv 94.95 56,555 2,301,101 231,258
25 German Deutsch de 89.37 1,768,097 140,723,961 4,881,190
26 Aragonese aragonés an 82.3 30,238 1,595,241 98,348
27 Korean 한국어 ko 82.2 292,777 14,904,339 969,927
28 Bavarian Boarisch bar 75.82 10,339 435,159 36,362
29 Venetian vèneto vec 75.34 10,457 577,238 31,742
30 Danish dansk da 70.01 192,254 8,183,646 643,226
31 Sinhalese සිංහල si 68.63 11,401 326,512 47,380
32 Japanese 日本語 ja 68.59 931,177 54,327,635 2,626,980
33 Marathi मराठी mr 64.92 40,682 1,325,092 151,526
34 Indonesian Bahasa Indonesia id 63.64 349,517 9,245,409 1,456,094
35 Welsh Cymraeg cy 63.47 60,214 5,212,370 138,379
36 Serbian српски / srpski sr 63.3 253,095 10,341,759 820,160
37 Yiddish ייִדיש yi 62.83 11,274 506,290 34,654
38 Uzbek oʻzbekcha uz 57.93 127,719 2,294,162 641,952
39 Hindi हिन्दी hi 56.16 115,571 2,704,499 480,696
40 Greek Ελληνικά el 45.24 110,014 5,021,505 286,869
42 Finnish suomi fi 44.62 357,373 15,246,537 954,762
41 Kannada ಕನ್ನಡ kn 43.7 16,937 464,024 55,745
43 Icelandic íslenska is 43.4 38,265 1,527,060 104,074
44 Sakha саха тыла sah 42.14 10,636 333,317 32,042
45 Georgian ქართული ka 39.74 85,794 2,868,106 243,312
46 Min Nan Bân-lâm-gú zh-min-nan 38.99 11,298 463,887 28,909
47 Czech čeština cs 38.73 306,891 12,328,285 790,544
48 Tamil தமிழ் ta 37.64 64,136 1,824,305 191,680
49 Tagalog Tagalog tl 37.15 62,683 1,521,157 201,855
50 Mongolian монгол mn 36.59 13,485 428,516 37,672
51 Ukrainian українська uk 36.47 532,066 15,216,526 1,561,302
52 Swahili Kiswahili sw 35.59 26,761 977,375 69,264
53 Afrikaans Afrikaans af 34.9 33,345 1,353,129 81,771
54 Quechua Runa Simi qu 34.73 19,176 653,675 50,628
55 Sanskrit संस्कृतम् sa 34.46 10,230 286,388 29,507
56 Armenian Հայերեն hy 34.3 135,920 2,641,392 472,629
57 Croatian hrvatski hr 34.21 149,138 4,569,704 410,613
58 Cantonese 粵語 zh-yue 33.56 33,111 929,137 94,174
59 Belarusian (Taraškievica) беларуская (тарашкевіца)‎ be-x-old 33.08 54,344 1,819,552 141,519
60 Malagasy Malagasy mg 32.1 47,060 729,675 179,183
61 Lombard lumbaart lmo 32.03 31,319 1,046,657 80,466
62 Low Saxon Plattdüütsch nds 31.37 21,936 762,781 54,898
63 Estonian eesti et 30.95 127,330 4,144,321 325,985
64 Luxembourgish Lëtzebuergesch lb 30.09 41,905 1,857,797 93,463
65 Catalan català ca 30.04 439,583 14,566,392 1,102,385
66 Azerbaijani azərbaycanca az 29.7 100,909 3,257,430 254,512
67 Bulgarian български bg 27.28 167,909 6,693,932 375,656
68 Alemannic Alemannisch als 27.18 17,412 608,409 40,966
69 Albanian shqip sq 26.23 51,812 1,614,686 125,904
70 Norwegian (Bokmål) norsk bokmål no 25.98 433,432 14,531,220 1,018,291
71 Kurdish Kurdî ku 25.98 20,759 660,816 49,807
72 Basque Euskara eu 25.06 203,704 4,828,948 546,855
73 Faroese føroyskt fo 24.66 10,621 306,951 25,959
74 Neapolitan Napulitano nap 23.31 14,197 688,046 28,033
75 Bishnupriya Manipuri বিষ্ণুপ্রিয়া মণিপুরী bpy 23.29 25,138 803,654 57,623
76 Walloon walon wa 22.65 13,526 318,135 34,825
77 Telugu తెలుగు te 22.24 59,334 1,303,766 156,168
78 Tatar татарча/tatarça tt 21.51 64,359 2,043,241 143,439
79 Scots Scots sco 21.26 26,719 450,582 77,958
80 Belarusian беларуская be 21.33 76,648 1,950,302 185,960
81 Slovene slovenščina sl 21.31 142,500 4,431,737 318,981
82 Sicilian sicilianu scn 20.22 24,534 737,682 54,523
83 Amharic አማርኛ am 19.85 16,229 332,302 41,910
84 Galician galego gl 19.65 117,212 3,475,003 259,076
85 Polish polski pl 19.59 1,071,133 40,766,356 2,163,228
86 Vietnamese Tiếng Việt vi 19.31 1,109,347 20,005,152 2,995,775
87 Nahuatl Nāhuatl nah 19.19 10,117 397,838 20,073
88 Punjabi ਪੰਜਾਬੀ pa 18.94 15,132 213,377 45,564
89 Slovak slovenčina sk 18.53 195,634 5,903,525 420,352
90 Esperanto Esperanto eo 17.84 203,919 5,630,830 446,470
91 Lithuanian lietuvių lt 17.81 167,846 4,828,402 361,728
92 Breton brezhoneg br 17.68 51,082 1,675,974 104,797
93 Norwegian (Nynorsk) norsk nynorsk nn 17.75 117,576 2,879,839 268,963
94 Asturian asturianu ast 16.56 19,776 784,739 37,329
95 Volapük Volapük vo 15.46 119,348 3,300,074 248,010
96 Sundanese Basa Sunda su 15.06 17,693 460,006 37,228
97 West Frisian Frysk fy 14.27 30,910 735,527 65,848
98 Nepali नेपाली ne 14.17 26,396 430,934 64,979
99 Malay Bahasa Melayu ms 13.99 270,540 3,863,198 701,745
100 Newar नेपाल भाषा new 12.6 70,885 822,330 192,693
101 Javanese Basa Jawa jv 11.45 48,168 908,436 103,062
102 Interlingua interlingua ia 11.39 14,310 551,393 24,489
103 Swedish svenska sv 10.77 1,945,837 28,100,139 4,502,192
104 Latin Latina la 10.4 111,502 2,893,755 207,885
105 Dutch Nederlands nl 8.91 1,793,477 43,304,104 3,262,925
106 Kazakh қазақша kk 8.37 208,649 2,253,876 490,101
107 Bashkir башҡортса ba 8.55 33,151 452,401 71,746
108 Gujarati ગુજરાતી gu 7.76 25,574 376,120 52,093
109 Banyumasan Basa Banyumasan map-bms 7.73 13,055 203,041 26,062
110 Samogitian žemaitėška bat-smg 7.1 13,682 334,771 23,296
111 Irish Gaeilge ga 6.65 31,913 764,009 53,746
112 Tajik тоҷикӣ tg 6.25 30,236 457,811 56,868
113 Scottish Gaelic Gàidhlig gd 5.62 17,346 488,192 27,015
114 Mazandarani مازِرونی mzn 5.33 12,010 128,753 23,970
115 Occitan occitan oc 5.32 87,698 2,085,437 140,135
116 Yoruba Yorùbá yo 5.32 30,987 546,039 53,320
117 Ido Ido io 5.07 26,040 924,365 37,915
118 Chuvash Чӑвашла cv 4.31 30,119 546,368 48,821
119 Cebuano Cebuano ceb 3.47 1,208,452 5,648,671 2,789,880
120 Waray-Waray Winaray war 3.44 1,241,120 6,014,892 2,816,382
121 Piedmontese Piemontèis pms 1.96 63,627 848,192 93,109
122 Kirghiz Кыргызча ky 1.31 27,423 186,452 42,358
123 Burmese language မြန်မာဘာသာ my 1.07 32,242 220,261 47,797
124 Buginese ᨅᨔ ᨕᨘᨁᨗ bug 0.91 14,089 197,023 18,173
125 Western Panjabi پنجابی pnb 0.45 33,144 411,671 40,080
126 Haitian Kreyòl ayisyen ht 0.26 53,184 705,586 61,227
127 Chechen нохчийн ce 0.22 62,548 376,958 75,616
128 Minangkabau Baso Minangkabau min 0.002 221,070 482,138 227,695
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.