Inverse problem

Inverse problem - process of calculating from a set of observations the causal factors that produced them, or deducing the causes or parameters that we cannot directly observe from their effects. Article “Inverse problem” in English Wikipedia has 61.5 points for quality (as of July 1, 2026). The article contains 66 references and 18 sections.

In this language version of Wikipedia the article has the best quality. Also, this article is the most popular in that (English) language version.

Since the creation of article “Inverse problem”, its content was written by 169 registered users of English Wikipedia and edited by 387 registered Wikipedia users in all languages.

The article is cited 253 times in English Wikipedia and cited 575 times in all languages.

The highest Authors Interest rank from 2001:

• Local (English): #9504 in September 2004
• Global: #27512 in March 2003

The highest popularity rank from 2008:

• Local (English): #135592 in February 2015
• Global: #147763 in September 2014

There are 19 language versions for this article in the WikiRank database (of the considered 55 Wikipedia language editions).

The quality and popularity assessment was based on Wikipédia dumps from July 1, 2026 (including revision history and pageviews for previous years).

The table below shows the language versions of the article with the highest quality.

#	Language	Quality grade	Quality score
1	English (en) Inverse problem		61.451
2	Chinese (zh) 逆問題		29.0375
3	Polish (pl) Problem odwrotny		25.4399
4	Finnish (fi) Inversio-ongelma		20.1796
5	Japanese (ja) 逆問題		18.6165
6	Italian (it) Problema inverso		17.7321
7	German (de) Inverses Problem		13.6995
8	Vietnamese (vi) Bài toán ngược		13.6884
9	Portuguese (pt) Problema inverso		11.161
10	Armenian (hy) Հակադարձ խնդիրներ		8.9631

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The following table shows the most popular language versions of the article.

The most popular language versions of the article "Inverse problem" in all the time

#	Language	Popularity award	Relative popularity
1	English (en) Inverse problem		1 043 614
2	Japanese (ja) 逆問題		201 046
3	Russian (ru) Обратная задача		127 545
4	German (de) Inverses Problem		101 337
5	Spanish (es) Problema inverso		79 222
6	French (fr) Problème inverse		69 765
7	Chinese (zh) 逆問題		26 838
8	Italian (it) Problema inverso		26 084
9	Polish (pl) Problem odwrotny		15 657
10	Finnish (fi) Inversio-ongelma		15 131

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The following table shows the language versions of the article with the highest popularity in the last month.

The most popular language versions of the article "Inverse problem" in June 2026

#	Language	Popularity award	Relative popularity
1	English (en) Inverse problem		2 643
2	Japanese (ja) 逆問題		481
3	French (fr) Problème inverse		238
4	German (de) Inverses Problem		175
5	Chinese (zh) 逆問題		164
6	Russian (ru) Обратная задача		115
7	Spanish (es) Problema inverso		55
8	Italian (it) Problema inverso		53
9	Finnish (fi) Inversio-ongelma		26
10	Korean (ko) 역문제		25

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The following table shows the language versions of the article with the highest Authors’ Interest.

Language versions of the article "Inverse problem" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.

#	Language	AI award	Relative AI
1	English (en) Inverse problem		169
2	Japanese (ja) 逆問題		33
3	German (de) Inverses Problem		32
4	Italian (it) Problema inverso		28
5	French (fr) Problème inverse		27
6	Spanish (es) Problema inverso		16
7	Russian (ru) Обратная задача		13
8	Finnish (fi) Inversio-ongelma		12
9	Chinese (zh) 逆問題		10
10	Persian (fa) مساله‌ی وارون		9

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The following table shows the language versions of the article with the highest Authors’ Interest in the last month.

Language versions of the article "Inverse problem" with the highest AI in June 2026

#	Language	AI award	Relative AI
1	Spanish (es) Problema inverso		1
2	Chinese (zh) 逆問題		1
3	Bulgarian (bg) Инверсна задача		0
4	German (de) Inverses Problem		0
5	English (en) Inverse problem		0
6	Persian (fa) مساله‌ی وارون		0
7	Finnish (fi) Inversio-ongelma		0
8	French (fr) Problème inverse		0
9	Hindi (hi) प्रतिलोम समस्या		0
10	Armenian (hy) Հակադարձ խնդիրներ		0

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The following table shows the language versions of the article with the highest number of citations.

Language versions of the article "Inverse problem" with the highest Citation Index (CI)

#	Language	CI award	Relative CI
1	English (en) Inverse problem		253
2	French (fr) Problème inverse		62
3	Japanese (ja) 逆問題		49
4	German (de) Inverses Problem		42
5	Spanish (es) Problema inverso		29
6	Russian (ru) Обратная задача		29
7	Italian (it) Problema inverso		17
8	Portuguese (pt) Problema inverso		15
9	Finnish (fi) Inversio-ongelma		13
10	Korean (ko) 역문제		13

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#	Language	Value
bg	Bulgarian Инверсна задача
de	German Inverses Problem
en	English Inverse problem
es	Spanish Problema inverso
fa	Persian مساله‌ی وارون
fi	Finnish Inversio-ongelma
fr	French Problème inverse
hi	Hindi प्रतिलोम समस्या
hy	Armenian Հակադարձ խնդիրներ
it	Italian Problema inverso
ja	Japanese 逆問題
ko	Korean 역문제
pl	Polish Problem odwrotny
pt	Portuguese Problema inverso
ru	Russian Обратная задача
uk	Ukrainian Обернена задача
vi	Vietnamese Bài toán ngược
zh	Chinese 逆問題
zhminnan	Min Nan Ge̍k-būn-tê

Best Rank

English: #135592 02.2015

Global: #147763 09.2014

Best Rank

English: #9504 09.2004

Global: #27512 03.2003

On 1 July 2026 in multilingual Wikipedia, Internet users most often read articles on the following topics: 2026 FIFA World Cup, Kylian Mbappé, Erling Haaland, Democratic Republic of the Congo, FIFA World Cup, Harry Kane, Romelu Lukaku, Senegal, Michael Olise, Sadio Mané.

In English Wikipedia the most popular articles on that day were: 2026 FIFA World Cup, Harry Kane, Julián Quiñones, List of FIFA World Cup top goalscorers, Kylian Mbappé, Democratic Republic of the Congo, Erling Haaland, DR Congo national football team, Melat Kiros, FIFA World Cup.

The WikiRank project is intended for automatic relative evaluation of the articles in the various language versions of Wikipedia. At the moment the service allows to compare over 50 million Wikipedia articles in 55 languages. Quality scores of articles are based on Wikipedia dumps from July, 2026. When calculating current popularity and AI of articles data from June 2026 was taken into account. For historical values of popularity and AI WikiRank used data from 2001 to 2026... More information