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Grey System Theory Applications

Grey System Theory Applications is a research topic within Management Science and Operations Research. Science Explorer counts 13k research works in it since 1956. 9.9% of them reached the world's top 10% most cited for their field and year.

This cluster of papers focuses on the application of Grey System Theory in forecasting various aspects related to energy consumption, CO2 emissions, and renewable energy. The papers explore the use of time series prediction models, nonlinear grey models, and multivariable grey models to forecast electricity demand, renewable energy consumption, and CO2 emissions. Additionally, the cluster discusses the optimization and application of fractional grey models for accurate forecasting.

  • Grey System Theory
  • Time Series Prediction
  • Energy Consumption Forecasting
  • CO2 Emissions
  • Renewable Energy Consumption
  • Electricity Demand Forecasting
  • Nonlinear Grey Models
  • Forecasting Model Optimization
  • Multivariable Grey Model
  • Fractional Grey Model
Research works
13k
fractional, since 1956
In the world top 10%
1.3k
per year above
Top-10% rate
9.9%
share of its works in the world top 10%
Growth, 2018-21 → 2022-25
+28%
the tick is no change
Largest producer
China
78% of the 10 largest, 2022-now

Which countries lead Grey System Theory Applications research?

By volume, China and India publish the most (1.6k and 101 works in 2022-now).

By volume, 2022-now

  1. 1 China 1.6k works
  2. 2 India 101 works
  3. 3 United States 82 works
  4. 4 Indonesia 64 works
  5. 5 Türkiye 52 works
  6. 6 United Kingdom 36 works
  7. 7 Vietnam 31 works
  8. 8 Taiwan 31 works
  9. 9 ?? 30 works
  10. 10 Malaysia 25 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: 78.1%India: 4.9%United States: 4.0%Indonesia: 3.1%6 others listed: 9.9%78%largest
China1,610 · 78.1%India101 · 4.9%United States82 · 4.0%Indonesia64 · 3.1%6 others listed205 · 9.9%

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

Which institutions lead Grey System Theory Applications research?

By volume in 2022-now, Nanjing University of Aeronautics and Astronautics publishes the most Grey System Theory Applications research, followed by North China Electric Power University and Hebei University of Engineering.

Who are the leading researchers in Grey System Theory Applications?

The most-cited researchers publishing on Grey System Theory Applications include Kai You Wang and Hua Zhang.

  1. 1 Kai You Wang China 224k citations
  2. 2 Hua Zhang Singapore 196k 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 Grey System Theory Applications?

The most cited paper in Grey System Theory Applications is "Control problems of grey systems" (Deng Julong, 1982), with 4,513 citations. Next come "Statistical Analysis of Circular Data." (2,174) and "A survey of index decomposition analysis in energy and environmental studies" (1,262).

Most cited papers
#PaperReleasedCitations
1 Control problems of grey systems Deng Julong · Systems & Control Letters Mar 1982 4,513
2 Statistical Analysis of Circular Data. Nicholas Lange, N. I. Fisher · Journal of the American Statistical Association Jun 1995 2,174
3 A survey of index decomposition analysis in energy and environmental studies B.W. Ang, F.Q. Zhang · Energy Dec 2000 1,262
4 The use of grey relational analysis in solving multiple attribute decision-making problems Yiyo Kuo, Taho Yang, Guan‐Wei Huang · Computers & Industrial Engineering 11 Jan 2008 1,120
5 A review on applications of ANN and SVM for building electrical energy consumption forecasting Ahmad Sukri Ahmad, Mohammad Yusri Hassan, Md Pauzi Abdullah et al. · Renewable and Sustainable Energy Reviews 22 Feb 2014 966
All 100 most cited papers, with filters and sorting

Where is Grey System Theory Applications research done?

The largest centres of Grey System Theory Applications research in 2022-now are Beijing (China), Nanjing (China), Shanghai (China) and Wuhan (China). Among places with at least 20 works in it, it is an unusually large share of all research in Handan.

Largest cities, 2022-now

  1. 1 BeijingChina 220 works
  2. 2 NanjingChina 128 works
  3. 3 ShanghaiChina 85 works
  4. 4 WuhanChina 84 works
  5. 5 Xi'anChina 76 works
  6. 6 ChongqingChina 64 works
  7. 7 GuangzhouChina 61 works
  8. 8 ChengduChina 58 works
  9. 9 JinanChina 37 works
  10. 10 HangzhouChina 35 works

Where it is the local speciality

  1. HandanCN · 25.7 works80×
← less than its size predicts1×more →

Location quotient: how much more of its research is in Grey System Theory Applications than the world average.

See Grey System Theory Applications on the map

Where is the best place to study Grey System Theory Applications?

Among universities, judged by research, Nanjing University of Aeronautics and Astronautics, Macau University of Science and Technology and Zhejiang University of Finance and Economics 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.

0%20%40%mean 21.74%fractional works in this field (log) →share of work in the world top 10% →Macau University of …Zhejiang University …Nanjing University o…Hebei University of …
above the meannear itbelow it

One dot per university in the first ten of the table below, at the default weights. The upper left is the interesting corner: small places doing unusually strong work.

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
1Nanjing University of Aeronautics and AstronauticsChina 70.816.4%26.4×48 +28.2%
2Macau University of Science and TechnologyChina 68.631.4%19.1×8 +372.8%
3Zhejiang University of Finance and EconomicsChina 58.029.7%78.3×12 -39.5%
4Hebei University of EngineeringChina 54.212.1%127.5×24 +21.8%
5Chongqing Technology and Business UniversityChina 53.616.4%87.1×18 +15.0%
6Southwest Petroleum UniversityChina 52.337.8%15.6×10 -8.3%
7Chongqing University of Posts and TelecommunicationsChina 51.921.3%23.9×14 +13.6%
8Nanjing University of Information Science and TechnologyChina 49.112.7%19.1×16 +20.8%
9Jiangnan UniversityChina 48.424.5%9.9×12 +11.5%
10North China Electric Power UniversityChina 47.515.1%21.2×29 -46.8%

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 Grey System Theory Applications, country by country

Is Grey System Theory Applications research growing?

Output in 2022-2025 was 28% higher than in 2018-2021, peaking in 2011. The fastest-growing topics are Grey System Theory Applications.

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 Grey System Theory Applications as a percentage of every work published that year, 0.012% in 2024.

still counting0.020%0.040%Grey System Theory Applications0.0088% in 202519801990200020102020

Fractional works of Grey System Theory Applications 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%Grey System Theory Applications10.1% in 2025200020102020

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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