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Company · Tokyo · Japan

NEC (Japan)

In research, NEC (Japan) stands highest in Engineering (#2,114 of 5,901 worldwide), Electrical and Electronic Engineering (#782 of 2,176 worldwide) and Physical Sciences (#4,213 of 10,670 worldwide), 2022-now. Relative to its size it is most specialised in Computer Vision and Pattern Recognition, Electrical and Electronic Engineering and Artificial Intelligence (Computer Vision and Pattern Recognition is 8.1× its share of world research).

nec.comROR OpenAlex
World rank, 2022-now
#9,177
of 22,385 · #8,376 all time
Rank in Japan
#220
of 924
Research works
13k
▲ 10% vs 2018-21
Citations
278k
21.7 per fractional work
Top-10% rate
5.7%
all institutions 10.0%
vs its own fields
0.70×
1.00× is exactly expected
Open access
10%
world 40%
International
8%
world 18%
NEC (Japan)

What is NEC (Japan) known for in research?

The fields where it stands highest, 2022-now, ranked among every institution above the floor in each field.

FieldWorld rankWhere that sitsTop-10% rateWorksAll time
EngineeringField #2,114 of 5,901 6.0%213 #3030
Electrical and Electronic EngineeringSubfield #782 of 2,176 7.3%114 #1150
Physical SciencesDomain #4,213 of 10,670 5.1%449 #3752
Computer ScienceField #3,049 of 4,417 3.9%193 #2298
Artificial IntelligenceSubfield #1,472 of 1,862 3.4%75 #1991

Each strip is that field's whole ranked pool, with the notch where NEC (Japan) sits in it, in the colour of the band that rank falls in. The track under the rate is the rate itself: it carries no average mark, because the average differs by field (from about 6% in Dentistry to 21% in Economics).

Which of those standings moved

The same fields on both windows: where it stood over the whole record, and where it stands in 2022-now. The distance is the story, and it is the one thing the two rank columns above cannot show.

  1. Engineering#3,030 #2,114
  2. Electrical and Electronic Engineering#1,150 #782
  3. Physical Sciences#3,752 #4,213
  4. Computer Science#2,298 #3,049
  5. Artificial Intelligence#1,991 #1,472
all time2022-now, better2022-now, worse

A dot further right is a better standing. Fields it was not ranked in over the whole record are left out.

Which fields of science does NEC (Japan) work in?

In 2022-now, 82% of research at NEC (Japan) is in Physical Sciences, 8% in Social Sciences. Its largest fields are Engineering (39%), Computer Science (35%), Medicine (6%). It does 2.1× the world's share of Physical Sciences.

Physical Sciences: 481 fractional works · 82.3% of its workEngineering: 227 fractional works · 39.0% of its workElectrical and Electronic Engineering: 121 fractional works · 20.7% of its workAerospace Engineering: 27 fractional works · 4.6% of its workControl and Systems Engineering: 19 fractional works · 3.3% of its workBiomedical Engineering: 16 fractional works · 2.8% of its workIndustrial and Manufacturing Engineering: 9 fractional works · 1.5% of its workCivil and Structural Engineering: 7 fractional works · 1.2% of its workMedia Technology: 7 fractional works · 1.2% of its workMechanical Engineering: 5 fractional works · 0.9% of its workAutomotive Engineering: 5 fractional works · 0.8% of its workOcean Engineering: 4 fractional works · 0.8% of its workComputational Mechanics: 2 fractional works · 0.4% of its workBuilding and Construction: 2 fractional works · 0.4% of its workSafety, Risk, Reliability and Quality: 2 fractional works · 0.4% of its workSmaller subfields together: 1 fractional works · 0.2% of its workComputer Science: 206 fractional works · 35.2% of its workArtificial Intelligence: 79 fractional works · 13.5% of its workComputer Vision and Pattern Recognition: 60 fractional works · 10.2% of its workComputer Networks and Communications: 25 fractional works · 4.4% of its workInformation Systems: 14 fractional works · 2.5% of its workSignal Processing: 10 fractional works · 1.7% of its workComputational Theory and Mathematics: 6 fractional works · 1.1% of its workHuman-Computer Interaction: 4 fractional works · 0.7% of its workHardware and Architecture: 3 fractional works · 0.6% of its workComputer Science Applications: 2 fractional works · 0.3% of its workSmaller subfields together: 2 fractional works · 0.3% of its workPhysics and Astronomy: 20 fractional works · 3.5% of its workAtomic and Molecular Physics, and Optics: 12 fractional works · 2.1% of its workInstrumentation: 3 fractional works · 0.5% of its workAstronomy and Astrophysics: 2 fractional works · 0.4% of its workRadiation: 2 fractional works · 0.3% of its workSmaller subfields together: 2 fractional works · 0.3% of its workMaterials Science: 10 fractional works · 1.7% of its workMaterials Chemistry: 6 fractional works · 1.0% of its workElectronic, Optical and Magnetic Materials: 2 fractional works · 0.4% of its workPolymers and Plastics: 1 fractional works · 0.2% of its workSmaller subfields together: 1 fractional works · 0.1% of its workEnvironmental Science: 6 fractional works · 1.0% of its workGlobal and Planetary Change: 2 fractional works · 0.3% of its workEnvironmental Engineering: 2 fractional works · 0.3% of its workSmaller subfields together: 2 fractional works · 0.4% of its workEarth and Planetary Sciences: 5 fractional works · 0.8% of its workGeophysics: 2 fractional works · 0.4% of its workGeology: 2 fractional works · 0.3% of its workSmaller subfields together: 1 fractional works · 0.1% of its workMathematics: 5 fractional works · 0.8% of its workStatistics and Probability: 2 fractional works · 0.3% of its workSmaller subfields together: 3 fractional works · 0.5% of its workChemistry: 1 fractional works · 0.1% of its workChemical Engineering: 1 fractional works · 0.1% of its workEnergy: 0 fractional works · 0.1% of its workSocial Sciences: 44 fractional works · 7.6% of its workBusiness, Management and Accounting: 16 fractional works · 2.7% of its workOrganizational Behavior and Human Resource Management: 5 fractional works · 0.9% of its workStrategy and Management: 3 fractional works · 0.6% of its workMarketing: 3 fractional works · 0.5% of its workManagement Information Systems: 2 fractional works · 0.4% of its workBusiness and International Management: 1 fractional works · 0.2% of its workSmaller subfields together: 1 fractional works · 0.1% of its workSocial Sciences: 12 fractional works · 2.0% of its workSociology and Political Science: 5 fractional works · 0.8% of its workCommunication: 3 fractional works · 0.5% of its workTransportation: 2 fractional works · 0.3% of its workDemography: 1 fractional works · 0.2% of its workSmaller subfields together: 2 fractional works · 0.3% of its workPsychology: 9 fractional works · 1.5% of its workSocial Psychology: 4 fractional works · 0.7% of its workExperimental and Cognitive Psychology: 3 fractional works · 0.6% of its workSmaller subfields together: 1 fractional works · 0.2% of its workDecision Sciences: 6 fractional works · 1.0% of its workManagement Science and Operations Research: 4 fractional works · 0.7% of its workInformation Systems and Management: 1 fractional works · 0.2% of its workSmaller subfields together: 1 fractional works · 0.1% of its workArts and Humanities: 1 fractional works · 0.2% of its workEconomics, Econometrics and Finance: 0 fractional works · 0.1% of its workHealth Sciences: 43 fractional works · 7.4% of its workMedicine: 35 fractional works · 6.0% of its workRadiology, Nuclear Medicine and Imaging: 5 fractional works · 0.9% of its workOncology: 4 fractional works · 0.7% of its workEndocrinology, Diabetes and Metabolism: 4 fractional works · 0.6% of its workSurgery: 4 fractional works · 0.6% of its workPulmonary and Respiratory Medicine: 3 fractional works · 0.6% of its workCardiology and Cardiovascular Medicine: 2 fractional works · 0.4% of its workPhysiology: 2 fractional works · 0.3% of its workGastroenterology: 2 fractional works · 0.3% of its workOrthopedics and Sports Medicine: 1 fractional works · 0.2% of its workPublic Health, Environmental and Occupational Health: 1 fractional works · 0.2% of its workPediatrics, Perinatology and Child Health: 1 fractional works · 0.2% of its workSmaller subfields together: 6 fractional works · 1.0% of its workHealth Professions: 7 fractional works · 1.2% of its workPhysical Therapy, Sports Therapy and Rehabilitation: 3 fractional works · 0.6% of its workGeneral Health Professions: 2 fractional works · 0.3% of its workSmaller subfields together: 2 fractional works · 0.3% of its workNursing: 0 fractional works · 0.1% of its workLife Sciences: 16 fractional works · 2.8% of its workBiochemistry, Genetics and Molecular Biology: 9 fractional works · 1.5% of its workMolecular Biology: 6 fractional works · 0.9% of its workBiophysics: 2 fractional works · 0.3% of its workSmaller subfields together: 1 fractional works · 0.2% of its workNeuroscience: 4 fractional works · 0.7% of its workCognitive Neuroscience: 3 fractional works · 0.5% of its workSmaller subfields together: 1 fractional works · 0.2% of its workAgricultural and Biological Sciences: 2 fractional works · 0.3% of its workImmunology and Microbiology: 1 fractional works · 0.2% of its workImmunology: 1 fractional works · 0.2% of its workALL ITS WORKNEC (Japan)584fractional works, 2022-now
Life Sciences3%Physical Sciences82%Health Sciences7%Social Sciences8%

Each ring splits the one inside it: the four domains of science, their fields, their subfields. Size is fractional works in 2022-now. Every slice is a page; the interactive view zooms down to single topics and colours each by how much more of it this institution does than the world.

Its 4 domains and 25 fields, with their numbers
    1. Engineering22739.0%
    2. Computer Science20635.2%
    3. Physics and Astronomy203.5%
    4. Materials Science101.7%
    5. Environmental Science61.0%
    6. Earth and Planetary Sciences50.8%
    7. Mathematics50.8%
    8. Chemistry10.1%
    9. Chemical Engineering10.1%
    10. Energy00.1%
    1. Business, Management and Accounting162.7%
    2. Social Sciences122.0%
    3. Psychology91.5%
    4. Decision Sciences61.0%
    5. Arts and Humanities10.2%
    6. Economics, Econometrics and Finance00.1%
    1. Medicine356.0%
    2. Health Professions71.2%
    3. Nursing00.1%
    4. Dentistry00.0%
    1. Biochemistry, Genetics and Molecular Biology91.5%
    2. Neuroscience40.7%
    3. Agricultural and Biological Sciences20.3%
    4. Immunology and Microbiology10.2%
    5. Pharmacology, Toxicology and Pharmaceutics00.0%
All of science, and how each field's share has moved since 1950: the Science domain explorer

What does NEC (Japan) specialise in?

Where its research is concentrated relative to its size: Computer Vision and Pattern Recognition takes 8.1× the share of its output that it takes of world research.

  1. Computer Vision and Pattern RecognitionSubfield · 59.5 works8.1×
  2. Electrical and Electronic EngineeringSubfield · 120.9 works5.8×
  3. Artificial IntelligenceSubfield · 78.9 works5.6×
  4. Computer Networks and CommunicationsSubfield · 25.5 works4.9×
  5. Computer ScienceField · 205.6 works4.5×
← less than its size predicts1×more →

Location quotient, a volume reading rather than an impact one. It surfaces small, lopsided specialities.

Field profile

Location quotient across every field it publishes in: outside the ring is more than an institution of this size would be expected to publish, inside it is less.

Agricultural and Biological Sciences: 0.07× its world share, 2 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 0.28× its world share, 9 worksBiochemistry, Geneti…Immunology and Microbiology: 0.24× its world share, 1 worksImmunology and Micro…Neuroscience: 0.41× its world share, 4 worksNeurosciencePharmacology, Toxicology and Pharmaceutics: 0.05× its world share, 0 worksPharmacology, Toxico…Chemical Engineering: 0.33× its world share, 1 worksChemical EngineeringChemistry: 0.09× its world share, 1 worksChemistryComputer Science: 4.53× its world share, 206 worksComputer ScienceEarth and Planetary Sciences: 0.53× its world share, 5 worksEarth and Planetary …Energy: 0.08× its world share, 0 worksEnergyEngineering: 2.60× its world share, 228 worksEngineeringEnvironmental Science: 0.20× its world share, 6 worksEnvironmental ScienceMaterials Science: 0.50× its world share, 10 worksMaterials ScienceMathematics: 0.69× its world share, 5 worksMathematicsPhysics and Astronomy: 1.56× its world share, 20 worksPhysics and AstronomyDentistry: 0.02× its world share, 0 worksDentistryHealth Professions: 0.47× its world share, 7 worksHealth ProfessionsMedicine: 0.31× its world share, 35 worksMedicineNursing: 0.17× its world share, 0 worksNursingArts and Humanities: 0.07× its world share, 1 worksArts and HumanitiesBusiness, Management and Accounting: 0.83× its world share, 16 worksBusiness, Management…Decision Sciences: 1.07× its world share, 6 worksDecision SciencesEconomics, Econometrics and Finance: 0.03× its world share, 0 worksEconomics, Econometr…Psychology: 0.50× its world share, 9 worksPsychologySocial Sciences: 0.16× its world share, 12 worksSocial Sciences1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Computer Science, 4.5×. Every wedge is a field page.

All 25 fields, with their numbers
  1. Computer Science4.53×206 works
  2. Engineering2.60×228 works
  3. Physics and Astronomy1.56×20 works
  4. Decision Sciences1.07×6 works
  5. Business, Management and Accounting0.83×16 works
  6. Mathematics0.69×5 works
  7. Earth and Planetary Sciences0.53×5 works
  8. Materials Science0.50×10 works
  9. Psychology0.50×9 works
  10. Health Professions0.47×7 works
  11. Neuroscience0.41×4 works
  12. Chemical Engineering0.33×1 works
  13. Medicine0.31×35 works
  14. Biochemistry, Genetics and Molecular Biology0.28×9 works
  15. Immunology and Microbiology0.24×1 works
  16. Environmental Science0.20×6 works
  17. Nursing0.17×0 works
  18. Social Sciences0.16×12 works
  19. Chemistry0.09×1 works
  20. Energy0.08×0 works
  21. Agricultural and Biological Sciences0.07×2 works
  22. Arts and Humanities0.07×1 works
  23. Pharmacology, Toxicology and Pharmaceutics0.05×0 works
  24. Economics, Econometrics and Finance0.03×0 works
  25. Dentistry0.02×0 works

Who are the top researchers at NEC (Japan)?

Ranked on the quality score, J. S. Tsai, Hidefumi Hiura and Yoshimi Kubo lead among researchers whose main affiliation is NEC (Japan).

  1. 1 J. S. Tsai Japan · #169,617 worldwide 5.8k citations · 92 works
  2. 2 Hidefumi Hiura Japan · #419,227 worldwide 9.3k citations · 75 works
  3. 3 Yoshimi Kubo Japan · #506,039 worldwide 11k citations · 289 works
  4. 4 H. Yokoyama Japan · #513,134 worldwide 4.9k citations · 126 works
  5. 5 Jaw-Shen Tsai Japan · #606,541 worldwide 5.5k citations · 154 works
  6. 6 Yoshiyuki Miyamoto Japan · #966,789 worldwide 8.8k citations · 286 works
  7. 7 Chiaki Sasaoka #1,740,183 worldwide 1.5k citations · 65 works
  8. 8 Kenichi Nishi Japan · #2,167,748 worldwide 4.8k citations · 199 works
  9. 9 H. Yokoyama Japan · #2,395,801 worldwide 1k citations · 15 works
  10. 10 S. Matsubara #2,471,411 worldwide 1.3k citations · 74 works
All ranked researchers at NEC (Japan)

What are the most cited papers from NEC (Japan)?

The most cited paper from NEC (Japan) is "Helical microtubules of graphitic carbon" (Sumio Iijima, 1991), with 43,125 citations. Next come "Single-shell carbon nanotubes of 1-nm diameter" (9,012) and "Dynamic programming algorithm optimization for spoken word recognition" (6,722).

Most cited papers
#PaperReleasedCitations
1 Helical microtubules of graphitic carbon Sumio Iijima · Nature Nov 1991 43,125
2 Single-shell carbon nanotubes of 1-nm diameter Sumio Iijima, Toshinari Ichihashi · Nature 17 Jun 1993 9,012
3 Dynamic programming algorithm optimization for spoken word recognition Hiroaki Sakoe, Seibi Chiba · IEEE Transactions on Acoustics Speech and Signal Processing Feb 1978 6,722
4 Quantum computers Thaddeus D. Ladd, Fedor Jelezko, Raymond Laflamme et al. · Nature Open access Mar 2010 3,589
5 New one-dimensional conductors: Graphitic microtubules Noriaki Hamada, Shin‐ichi Sawada, Atsushi Oshiyama · Physical Review Letters 9 Mar 1992 3,501
All 60 most cited papers, with filters and sorting

Which keywords describe research at NEC (Japan)?

By fractional works in 2022-now, weighted toward what it does more of than the world: Deep Learning, Neural Networks, Convolutional Neural Networks, Optical Fiber, Energy Efficiency, Machine Learning, Digital Signal Processing and Coherent Detection.

▲ more of its work than of the world's◆ about the world's share▼ less than the world's

Size is fractional works in 2022-now in the topics tagged with each word; colour is the word's share of this institution's work against its share of the world's. The 40 words are chosen for being large and distinctive. Each links to the topic it comes from most.

All 40 words, with their numbers
  1. Deep Learning97▲ 4.8×66 topics
  2. Machine Learning40▲ 2.1×56 topics
  3. Neural Networks35▲ 3.9×28 topics
  4. Convolutional Neural Networks27▲ 6.3×14 topics
  5. Energy Efficiency26▲ 4.9×17 topics
  6. Optical Fiber23▲ 38×3 topics
  7. Digital Signal Processing17▲ 62×2 topics
  8. Coherent Detection17▲ 70×1 topic
  9. Nonlinear Effects17▲ 70×1 topic
  10. Microwave Photonics16▲ 32×2 topics
  11. Optical Access Networks14▲ 75×1 topic
  12. Photonic Signal Processing14▲ 75×1 topic
  13. Security14▲ 3.5×18 topics
  14. Security Analysis13▲ 14×4 topics
  15. Integrated Circuits13▲ 15×3 topics
  16. Massive MIMO12▲ 25×3 topics
  17. Cryptanalysis11▲ 22×4 topics
  18. Feature Extraction11▲ 4.1×8 topics
  19. Channel Modeling11▲ 15×5 topics
  20. Computer Vision10▲ 6.6×4 topics
  21. Spectral Efficiency10▲ 28×2 topics
  22. Elastic Optical Networks10▲ 110×1 topic
  23. Optical Networks10▲ 110×1 topic
  24. Wireless Networks10▲ 12×8 topics
  25. Image Classification10▲ 9.1×2 topics
  26. Anomaly Detection10▲ 5.8×4 topics
  27. Heterogeneous Networks9▲ 15×2 topics
  28. Image Recognition9▲ 10×1 topic
  29. Object Detection9▲ 11×1 topic
  30. Pose Estimation8▲ 12×3 topics
  31. Silicon Photonics8▲ 14×2 topics
  32. 5G8▲ 24×3 topics
  33. Multi-Agent Systems8▲ 7.4×6 topics
  34. Side-Channel Attacks8▲ 27×3 topics
  35. Time Series8▲ 7.9×3 topics
  36. Unsupervised Learning8▲ 9.0×3 topics
  37. Meta-Learning8▲ 16×2 topics
  38. Semiconductor Lasers8▲ 20×2 topics
  39. Cellular Networks8▲ 28×1 topic
  40. Optical Modulators8▲ 9.5×3 topics

Which research topics does NEC (Japan) publish most on?

By volume in 2022-now: Optical Network Technologies, Advanced Photonic Communication Systems, Advanced Optical Network Technologies and Advanced Neural Network Applications.

Optical Network Technologies: 17 fractional worksAdvanced Photonic Communication Systems: 14 fractional worksAdvanced Optical Network…10Advanced Optical Network Technologies: 10 fractional worksAdvanced Neural Network …9Advanced Neural Network Applications: 9 fractional worksAdvanced MIMO Systems Optimization: 8 fractional worksPhotonic and Optical Devices: 7 fractional worksSemiconductor Lasers and…6Semiconductor Lasers and Optical Devices: 6 fractional worksAnomaly Detection Techniques and Applications: 6 fractional worksAdvanced Fiber Optic Sensors: 6 fractional worksCryptographic Implementations and Security: 6 fractional works
Electrical and Electronic EngineeringComputer Vision and Pattern RecognitionArtificial Intelligence

Area is fractional works; colour is the subfield each topic belongs to.

  1. 1 Optical Network Technologies Electrical and Electronic Engineering 17 works
  2. 2 Advanced Photonic Communication Systems Electrical and Electronic Engineering 14 works
  3. 3 Advanced Optical Network Technologies Electrical and Electronic Engineering 10 works
  4. 4 Advanced Neural Network Applications Computer Vision and Pattern Recognition 9 works
  5. 5 Advanced MIMO Systems Optimization Electrical and Electronic Engineering 8 works
  6. 6 Photonic and Optical Devices Electrical and Electronic Engineering 7 works
  7. 7 Semiconductor Lasers and Optical Devices Electrical and Electronic Engineering 6 works
  8. 8 Anomaly Detection Techniques and Applications Artificial Intelligence 6 works
  9. 9 Advanced Fiber Optic Sensors Electrical and Electronic Engineering 6 works
  10. 10 Cryptographic Implementations and Security Artificial Intelligence 6 works

How open and international is its research?

Against the world's own shares: the tick on each track. Both are shares of its output, so they sit on one scale and can be read against each other as well as against the world.

openly available10.3%not open89.7%

World: 40% of research is openly available.

with international co-authors8.0%domestic only92.0%

World: 18% is written across borders.

How has NEC (Japan)'s research output changed?

Output in 2022-2025 was 10% higher than in 2018-2021.

still counting1990200020102020
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 NEC (Japan) as a percentage of every work published that year, 0.0024% in 2024.

still counting0.050%0.10%NEC (Japan)0.0027% in 202519801990200020102020

Fractional works of NEC (Japan) 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, against all institutions in the same year.

still counting5%10%15%all institutions10.0% in 2025NEC (Japan)7.1% in 2025200020102020

Of each year's output, the share that reached the world's 10% most cited for its field and year. Peak 11.3% in 2011.

Other research institutions in Tokyo

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NEC (Japan) on Science Explorer

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