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Expert finding and Q&A systems

Expert finding and Q&A systems is a research topic within Information Systems. Science Explorer counts 5.7k research works in it since 1968. 9.9% of them reached the world's top 10% most cited for their field and year.

This cluster of papers focuses on the identification and retrieval of experts within online communities, particularly in the context of question answering platforms and social media. It explores various aspects such as user motivations, answer quality, relevance criteria, and techniques for routing questions to appropriate answerers.

  • Expert Finding
  • Community Question Answering
  • Social Media
  • Knowledge Sharing
  • Relevance Criteria
  • User Motivations
  • Answer Quality
  • Question Routing
  • Expertise Identification
  • Information Seeker Satisfaction
Research works
5.7k
fractional, since 1968
In the world top 10%
562
per year above
Top-10% rate
9.9%
share of its works in the world top 10%
Growth, 2018-21 → 2022-25
+19%
the tick is no change
Largest producer
China
41% of the 10 largest, 2022-now
Expert finding and Q&A systems

Which countries lead Expert finding and Q&A systems research?

By volume, China and the United States publish the most (525 and 249 works in 2022-now).

By volume, 2022-now

  1. 1 China 525 works
  2. 2 United States 249 works
  3. 3 India 217 works
  4. 4 Japan 53 works
  5. 5 United Kingdom 49 works
  6. 6 Germany 47 works
  7. 7 Canada 43 works
  8. 8 Indonesia 40 works
  9. 9 Australia 35 works
  10. 10 Italy 28 works

How concentrated that is

The same countries as shares of everything the list above accounts for. A node where two countries do two thirds of the work and one spread evenly across twelve read alike as a ranking and not at all alike here.

China: 40.8%United States: 19.4%India: 16.9%Japan: 4.1%6 others listed: 18.8%41%largest
China525 · 40.8%United States249 · 19.4%India217 · 16.9%Japan53 · 4.1%6 others listed242 · 18.8%

Shares of the rows listed above, not of the whole node.

Which institutions lead Expert finding and Q&A systems research?

By volume in 2022-now, Chinese Academy of Sciences publishes the most Expert finding and Q&A systems research, followed by Wuhan University and Sun Yat-sen University.

By volume, 2022-now

  1. 1 Chinese Academy of SciencesChina 17 works
  2. 2 Wuhan UniversityChina 9 works
  3. 3 Sun Yat-sen UniversityChina 8 works
  4. 4 Renmin University of ChinaChina 7 works
  5. 5 Carnegie Mellon UniversityUnited States 7 works
  6. 6 Savitribai Phule Pune UniversityIndia 7 works
  7. 7 Nanyang Technological UniversitySingapore 7 works
  8. 8 Peking UniversityChina 7 works
  9. 9 Tsinghua UniversityChina 7 works
  10. 10 Beijing University of Posts and TelecommunicationsChina 7 works

Who are the leading researchers in Expert finding and Q&A systems?

The most-cited researchers publishing on Expert finding and Q&A systems include Kai You Wang and Philip S. Yu.

  1. 1 Kai You Wang China 224k citations
  2. 2 Philip S. Yu United States 141k citations

Ranked by citations received across their whole record, among researchers with at least three works on this topic.

What are the most cited papers in Expert finding and Q&A systems?

The most cited paper in Expert finding and Q&A systems is "Cumulated gain-based evaluation of IR techniques" (Kalervo Järvelin, Jaana Kekäläinen, 2002), with 4,810 citations. Next come "ArnetMiner" (2,177) and "Models in information behaviour research" (2,092).

Most cited papers
#PaperReleasedCitations
1 Cumulated gain-based evaluation of IR techniques Kalervo Järvelin, Jaana Kekäläinen · ACM Transactions on Information Systems Oct 2002 4,810
2 ArnetMiner Jie Tang, Jing Zhang, Limin Yao et al. Conference paper 24 Aug 2008 2,177
3 Models in information behaviour research T. D. Wilson · Journal of Documentation Aug 1999 2,092
4 Learning to rank for information retrieval Tie‐Yan Liu Conference paper 19 Jul 2010 1,949
5 Consensus measurement in Delphi studies Heiko A. von der Gracht · Technological Forecasting and Social Change 10 May 2012 1,851
All 100 most cited papers, with filters and sorting

Where is Expert finding and Q&A systems research done?

The largest centres of Expert finding and Q&A systems research in 2022-now are Beijing (China), Shanghai (China), Nanjing (China) and Wuhan (China).

Largest cities, 2022-now

  1. 1 BeijingChina 110 works
  2. 2 ShanghaiChina 45 works
  3. 3 NanjingChina 28 works
  4. 4 WuhanChina 27 works
  5. 5 GuangzhouChina 24 works
  6. 6 HangzhouChina 24 works
  7. 7 TokyoJapan 18 works
  8. 8 PuneIndia 17 works
  9. 9 ChennaiIndia 16 works
  10. 10 ChengduChina 16 works
See Expert finding and Q&A systems on the map

Where is the best place to study Expert finding and Q&A systems?

Among universities, judged by research, Wuhan University score highest, combining excellence, specialisation, size, growth and international reach. Research strength is one signal when choosing where to study; it does not measure teaching.

Excellenceshare of its work in the world top 10%, 2022-now and all time averaged
40%
Specialisationhow much of its work is in this field, counted up to 10× the world share
10%
Sizeits output in this field, on a log scale
30%
Growthoutput growth, counted from -20% to +20%
10%
Internationalshare of its work with a co-author abroad
10%
Each slider sets a weight; the share it gets of the score is beside it.
#UniversityScoreTop 10%SpecialisationWorksGrowth
1Wuhan UniversityChina 0.011.6%4.2×9 -35.6%

Universities only. The score blends excellence (40%), size (30%), specialisation (10%), growth (10%), international reach (10%), 2022-now; growth compares 2018-21 with 2022-25 and counts up to +20%, since a jump from a small base is mostly noise.

Every institution in Expert finding and Q&A systems, country by country

Is Expert finding and Q&A systems research growing?

Output in 2022-2025 was 19% higher than in 2018-2021, peaking in 2025. The fastest-growing topics are Expert finding and Q&A systems.

still counting19801990200020102020
grewheldshrank

The same series as a ribbon: one cell per year, darker for more. The line above answers how much; this answers when.

Its share of all research

Growing output can still be a shrinking share: all of science grows. This is Expert finding and Q&A systems as a percentage of every work published that year, 0.0055% in 2024.

still counting0.0050%0.010%Expert finding and Q&A systems0.0078% in 202519801990200020102020

Fractional works of Expert finding and Q&A systems over all fractional works that year. How the balance of science has shifted.

How much of it reaches the world top 10%

Year by year.

still counting5%10%15%Expert finding and Q&A systems10.1% in 202520102020

Of each year's works in it, the share that reached the world's 10% most cited for their field and year. A field is the world for its own topics, so there is no other line to hold it against.

Which topics inside it are moving

Growth and decline on one axis around a shared zero. Two lists side by side hide the thing that matters: whether the growth dwarfs the decline, or the other way round.

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