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Research facility · Pátrai · Greece

Computer Technology Institute and Press “DIOPHANTUS”

In research, Computer Technology Institute and Press “DIOPHANTUS” stands highest in Physical Sciences (#7,923 of 10,670 worldwide), 2022-now. Relative to its size it is most specialised in Computer Science (Computer Science is 5.0× its share of world research).

cti.grROR OpenAlex
World rank, 2022-now
#15,484
of 22,385 · #6,380 all time
Rank in Greece
#64
of 111
Research works
1.5k
◆ 1% vs 2018-21
Citations
23k
15.3 per fractional work
Top-10% rate
12.9%
all institutions 10.0%
vs its own fields
1.00×
1.00× is exactly expected
Open access
20%
world 40%
International
21%
world 18%
Computer Technology Institute and Press “DIOPHANTUS”

What is Computer Technology Institute and Press “DIOPHANTUS” 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
Physical SciencesDomain #7,923 of 10,670 10.5%62 #3836

Each strip is that field's whole ranked pool, with the notch where Computer Technology Institute and Press “DIOPHANTUS” 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 fields of science does Computer Technology Institute and Press “DIOPHANTUS” work in?

In 2022-now, 65% of research at Computer Technology Institute and Press “DIOPHANTUS” is in Physical Sciences, 21% in Social Sciences. Its largest fields are Computer Science (39%), Engineering (19%), Social Sciences (9%). It does 1.6× the world's share of Physical Sciences.

Physical Sciences: 67 fractional works · 64.7% of its workComputer Science: 40 fractional works · 38.5% of its workArtificial Intelligence: 14 fractional works · 13.8% of its workInformation Systems: 7 fractional works · 7.3% of its workComputer Networks and Communications: 7 fractional works · 6.8% of its workSignal Processing: 3 fractional works · 3.4% of its workComputer Vision and Pattern Recognition: 3 fractional works · 3.2% of its workComputer Science Applications: 2 fractional works · 1.8% of its workComputational Theory and Mathematics: 1 fractional works · 1.2% of its workHuman-Computer Interaction: 1 fractional works · 0.7% of its workHardware and Architecture: 0 fractional works · 0.4% of its workEngineering: 20 fractional works · 19.2% of its workElectrical and Electronic Engineering: 5 fractional works · 4.7% of its workIndustrial and Manufacturing Engineering: 4 fractional works · 3.8% of its workControl and Systems Engineering: 2 fractional works · 2.4% of its workBiomedical Engineering: 2 fractional works · 2.2% of its workMedia Technology: 1 fractional works · 0.8% of its workAutomotive Engineering: 1 fractional works · 0.8% of its workBuilding and Construction: 1 fractional works · 0.7% of its workOcean Engineering: 1 fractional works · 0.7% of its workMechanics of Materials: 1 fractional works · 0.7% of its workComputational Mechanics: 1 fractional works · 0.6% of its workCivil and Structural Engineering: 0 fractional works · 0.5% of its workSafety, Risk, Reliability and Quality: 0 fractional works · 0.5% of its workAerospace Engineering: 0 fractional works · 0.4% of its workMechanical Engineering: 0 fractional works · 0.4% of its workEnvironmental Science: 4 fractional works · 3.8% of its workEnvironmental Engineering: 1 fractional works · 1.4% of its workHealth, Toxicology and Mutagenesis: 1 fractional works · 0.7% of its workPollution: 0 fractional works · 0.4% of its workGlobal and Planetary Change: 0 fractional works · 0.3% of its workWater Science and Technology: 0 fractional works · 0.3% of its workIndustrial and Manufacturing Engineering: 0 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.4% of its workMathematics: 1 fractional works · 0.8% of its workComputational Mathematics: 1 fractional works · 0.6% of its workSmaller subfields together: 0 fractional works · 0.3% of its workPhysics and Astronomy: 1 fractional works · 0.8% of its workStatistical and Nonlinear Physics: 1 fractional works · 0.6% of its workSmaller subfields together: 0 fractional works · 0.2% of its workMaterials Science: 0 fractional works · 0.5% of its workBiomaterials: 0 fractional works · 0.5% of its workEnergy: 0 fractional works · 0.4% of its workRenewable Energy, Sustainability and the Environment: 0 fractional works · 0.4% of its workSmaller subfields together: 0 fractional works · 0.0% of its workEarth and Planetary Sciences: 0 fractional works · 0.4% of its workAtmospheric Science: 0 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.1% of its workChemistry: 0 fractional works · 0.2% of its workSocial Sciences: 21 fractional works · 20.7% of its workSocial Sciences: 9 fractional works · 8.6% of its workEducation: 2 fractional works · 2.3% of its workSociology and Political Science: 2 fractional works · 2.2% of its workPolitical Science and International Relations: 2 fractional works · 1.8% of its workSafety Research: 1 fractional works · 0.6% of its workTransportation: 1 fractional works · 0.5% of its workGender Studies: 0 fractional works · 0.4% of its workDemography: 0 fractional works · 0.3% of its workSmaller subfields together: 1 fractional works · 0.5% of its workBusiness, Management and Accounting: 6 fractional works · 5.5% of its workStrategy and Management: 2 fractional works · 1.5% of its workManagement of Technology and Innovation: 1 fractional works · 1.2% of its workMarketing: 1 fractional works · 1.1% of its workManagement Information Systems: 1 fractional works · 0.9% of its workAccounting: 1 fractional works · 0.7% of its workSmaller subfields together: 0 fractional works · 0.1% of its workPsychology: 3 fractional works · 3.0% of its workExperimental and Cognitive Psychology: 1 fractional works · 1.0% of its workSocial Psychology: 1 fractional works · 0.9% of its workDevelopmental and Educational Psychology: 1 fractional works · 0.6% of its workApplied Psychology: 0 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.2% of its workDecision Sciences: 2 fractional works · 2.3% of its workManagement Science and Operations Research: 2 fractional works · 1.6% of its workInformation Systems and Management: 1 fractional works · 0.7% of its workEconomics, Econometrics and Finance: 1 fractional works · 1.0% of its workEconomics and Econometrics: 1 fractional works · 0.5% of its workFinance: 0 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.1% of its workArts and Humanities: 0 fractional works · 0.5% of its workArcheology: 0 fractional works · 0.2% of its workLanguage and Linguistics: 0 fractional works · 0.2% of its workSmaller subfields together: 0 fractional works · 0.0% of its workHealth Sciences: 11 fractional works · 10.6% of its workMedicine: 8 fractional works · 7.5% of its workSurgery: 2 fractional works · 1.5% of its workCardiology and Cardiovascular Medicine: 1 fractional works · 0.7% of its workPhysiology: 1 fractional works · 0.7% of its workPublic Health, Environmental and Occupational Health: 1 fractional works · 0.6% of its workHematology: 1 fractional works · 0.5% of its workOncology: 0 fractional works · 0.5% of its workHealth Informatics: 0 fractional works · 0.4% of its workRadiology, Nuclear Medicine and Imaging: 0 fractional works · 0.4% of its workRheumatology: 0 fractional works · 0.4% of its workInfectious Diseases: 0 fractional works · 0.3% of its workPulmonary and Respiratory Medicine: 0 fractional works · 0.3% of its workSmaller subfields together: 1 fractional works · 1.2% of its workHealth Professions: 3 fractional works · 3.0% of its workHealth Information Management: 1 fractional works · 1.1% of its workMedical Laboratory Technology: 1 fractional works · 0.7% of its workEmergency Medical Services: 0 fractional works · 0.4% of its workGeneral Health Professions: 0 fractional works · 0.4% of its workSmaller subfields together: 0 fractional works · 0.4% of its workNursing: 0 fractional works · 0.1% of its workLife Sciences: 4 fractional works · 4.0% of its workBiochemistry, Genetics and Molecular Biology: 1 fractional works · 1.4% of its workMolecular Biology: 0 fractional works · 0.5% of its workBiochemistry: 0 fractional works · 0.3% of its workClinical Biochemistry: 0 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.3% of its workNeuroscience: 1 fractional works · 0.9% of its workCognitive Neuroscience: 1 fractional works · 0.7% of its workSmaller subfields together: 0 fractional works · 0.2% of its workImmunology and Microbiology: 1 fractional works · 0.9% of its workImmunology: 1 fractional works · 0.8% of its workSmaller subfields together: 0 fractional works · 0.0% of its workAgricultural and Biological Sciences: 1 fractional works · 0.8% of its workPlant Science: 0 fractional works · 0.4% of its workFood Science: 0 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.1% of its workPharmacology, Toxicology and Pharmaceutics: 0 fractional works · 0.1% of its workALL ITS WORKComputerTechnology…103fractional works, 2022-now
Life Sciences4%Physical Sciences65%Health Sciences11%Social Sciences21%

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 23 fields, with their numbers
    1. Computer Science4038.5%
    2. Engineering2019.2%
    3. Environmental Science43.8%
    4. Mathematics10.8%
    5. Physics and Astronomy10.8%
    6. Materials Science00.5%
    7. Energy00.4%
    8. Earth and Planetary Sciences00.4%
    9. Chemistry00.2%
    1. Social Sciences98.6%
    2. Business, Management and Accounting65.5%
    3. Psychology33.0%
    4. Decision Sciences22.3%
    5. Economics, Econometrics and Finance11.0%
    6. Arts and Humanities00.5%
    1. Medicine87.5%
    2. Health Professions33.0%
    3. Nursing00.1%
    1. Biochemistry, Genetics and Molecular Biology11.4%
    2. Neuroscience10.9%
    3. Immunology and Microbiology10.9%
    4. Agricultural and Biological Sciences10.8%
    5. Pharmacology, Toxicology and Pharmaceutics00.1%
All of science, and how each field's share has moved since 1950: the Science domain explorer

What does Computer Technology Institute and Press “DIOPHANTUS” specialise in?

Where its research is concentrated relative to its size: Computer Science takes 5.0× the share of its output that it takes of world research.

  1. Computer ScienceField · 39.7 works5.0×
← 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: 0.16× its world share, 1 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 0.26× its world share, 1 worksBiochemistry, Geneti…Immunology and Microbiology: 0.88× its world share, 1 worksImmunology and Micro…Neuroscience: 0.55× its world share, 1 worksNeurosciencePharmacology, Toxicology and Pharmaceutics: 0.23× its world share, 0 worksPharmacology, Toxico…Chemistry: 0.10× its world share, 0 worksChemistryComputer Science: 4.96× its world share, 40 worksComputer ScienceEarth and Planetary Sciences: 0.23× its world share, 0 worksEarth and Planetary …Energy: 0.46× its world share, 0 worksEnergyEngineering: 1.28× its world share, 20 worksEngineeringEnvironmental Science: 0.77× its world share, 4 worksEnvironmental ScienceMaterials Science: 0.14× its world share, 0 worksMaterials ScienceMathematics: 0.70× its world share, 1 worksMathematicsPhysics and Astronomy: 0.36× its world share, 1 worksPhysics and AstronomyHealth Professions: 1.14× its world share, 3 worksHealth ProfessionsMedicine: 0.39× its world share, 8 worksMedicineNursing: 0.13× its world share, 0 worksNursingArts and Humanities: 0.17× its world share, 0 worksArts and HumanitiesBusiness, Management and Accounting: 1.69× its world share, 6 worksBusiness, Management…Decision Sciences: 2.34× its world share, 2 worksDecision SciencesEconomics, Econometrics and Finance: 0.44× its world share, 1 worksEconomics, Econometr…Psychology: 0.97× its world share, 3 worksPsychologySocial Sciences: 0.68× its world share, 9 worksSocial Sciences1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Computer Science, 5.0×. Every wedge is a field page.

All 23 fields, with their numbers
  1. Computer Science4.96×40 works
  2. Decision Sciences2.34×2 works
  3. Business, Management and Accounting1.69×6 works
  4. Engineering1.28×20 works
  5. Health Professions1.14×3 works
  6. Psychology0.97×3 works
  7. Immunology and Microbiology0.88×1 works
  8. Environmental Science0.77×4 works
  9. Mathematics0.70×1 works
  10. Social Sciences0.68×9 works
  11. Neuroscience0.55×1 works
  12. Energy0.46×0 works
  13. Economics, Econometrics and Finance0.44×1 works
  14. Medicine0.39×8 works
  15. Physics and Astronomy0.36×1 works
  16. Biochemistry, Genetics and Molecular Biology0.26×1 works
  17. Pharmacology, Toxicology and Pharmaceutics0.23×0 works
  18. Earth and Planetary Sciences0.23×0 works
  19. Arts and Humanities0.17×0 works
  20. Agricultural and Biological Sciences0.16×1 works
  21. Materials Science0.14×0 works
  22. Nursing0.13×0 works
  23. Chemistry0.10×0 works

Who are the top researchers at Computer Technology Institute and Press “DIOPHANTUS”?

Ranked on the quality score, Ioannis Chatzigiannakis, Georgios Mylonas and Vasilis T. Tampakas lead among researchers whose main affiliation is Computer Technology Institute and Press “DIOPHANTUS”.

  1. 1 Ioannis Chatzigiannakis Greece · #1,277,727 worldwide 4.6k citations · 285 works
  2. 2 Georgios Mylonas Greece · #1,874,013 worldwide 3k citations · 168 works
  3. 3 Vasilis T. Tampakas Greece · #1,977,664 worldwide 899 citations · 19 works
  4. 4 Haralampos Tsaknakis Greece · #2,457,716 worldwide 309 citations · 19 works
  5. 5 Dimitrios Amaxilatis Greece · #2,576,573 worldwide 947 citations · 81 works
  6. 6 Ioannis Mamounakis Greece · #2,628,555 worldwide 314 citations · 19 works
  7. 7 Ioannis D. Zaharakis Greece · #2,929,324 worldwide 1.9k citations · 26 works
  8. 8 Orestis Akribopoulos Greece · #2,960,176 worldwide 171 citations · 15 works
  9. 9 Manuel Morante Greece · #3,032,948 worldwide 135 citations · 15 works
  10. 10 Andreas Papazois Greece · #3,057,219 worldwide 973 citations · 74 works
All ranked researchers at Computer Technology Institute and Press “DIOPHANTUS”

What are the most cited papers from Computer Technology Institute and Press “DIOPHANTUS”?

The most cited paper from Computer Technology Institute and Press “DIOPHANTUS” is "Covid-19: automatic detection from X-ray images utilizing transfer learning with convolutional neural networks" (Ioannis D. Apostolopoulos, Tzani A. Mpesiana, 2020), with 2,435 citations. Next come "Machine learning: a review of classification and combining techniques" (1,582) and "Elastic Bandwidth Allocation in Flexible OFDM-Based Optical Networks" (830).

Most cited papers
#PaperReleasedCitations
1 Covid-19: automatic detection from X-ray images utilizing transfer learning with convolutional neural networks Ioannis D. Apostolopoulos, Tzani A. Mpesiana · Physical and Engineering Sciences in Medicine Open access 3 Apr 2020 2,435
2 Machine learning: a review of classification and combining techniques Sotiris B. Kotsiantis, Ioannis D. Zaharakis, Panagiotis Pintelas · Artificial Intelligence Review Nov 2006 1,582
3 Elastic Bandwidth Allocation in Flexible OFDM-Based Optical Networks K. Christodoulopoulos, Ioannis Tomkos, Emmanouel Varvarigos · Journal of Lightwave Technology 15 Mar 2011 830
4 State-of-the-art in privacy preserving data mining Vassilios S. Verykios, Elisa Bertino, Igor Nai Fovino et al. · ACM SIGMOD Record Mar 2004 815
5 SmartSantander: IoT experimentation over a smart city testbed Luı́s Sánchez, Luı́s Muñoz, José Antonio Galache et al. · Computer Networks Open access 2 Jan 2014 700
All 58 most cited papers, with filters and sorting

Which keywords describe research at Computer Technology Institute and Press “DIOPHANTUS”?

By fractional works in 2022-now, weighted toward what it does more of than the world: Deep Learning, Machine Learning, Neural Networks, Healthcare, IoT Security, Internet of Things, Security and Anomaly 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 Learning18▲ 5.0×44 topics
  2. Machine Learning16▲ 4.6×35 topics
  3. Neural Networks8▲ 5.4×22 topics
  4. Healthcare7▲ 5.8×9 topics
  5. IoT Security5▲ 17×3 topics
  6. Internet of Things5▲ 5.6×10 topics
  7. Security4▲ 6.4×11 topics
  8. Anomaly Detection3▲ 10×4 topics
  9. Artificial Intelligence3▲ 2.1×10 topics
  10. 5G Networks3▲ 14×3 topics
  11. Supply Chain Management3▲ 3.2×6 topics
  12. Big Data3▲ 2.9×10 topics
  13. Smart Cities3▲ 10×4 topics
  14. Topic Modeling3▲ 18×2 topics
  15. Data Mining3▲ 3.5×5 topics
  16. Cybersecurity3▲ 10×3 topics
  17. Information Retrieval2▲ 11×4 topics
  18. Privacy2▲ 8.4×4 topics
  19. Detection2▲ 8.3×3 topics
  20. IoT2▲ 6.3×7 topics
  21. Security Analysis2▲ 14×4 topics
  22. Text Classification2▲ 13×2 topics
  23. Behavioral Analysis2▲ 18×2 topics
  24. Cyber-Physical Systems2▲ 7.5×5 topics
  25. Environmental Management2▲ 4.8×4 topics
  26. Mobile Edge Computing2▲ 12×2 topics
  27. Security and Privacy2▲ 10×2 topics
  28. Surveillance2▲ 6.8×3 topics
  29. Edge Computing2▲ 15×1 topic
  30. Fog Computing2▲ 16×1 topic
  31. Android Malware2▲ 23×1 topic
  32. Intrusion Detection2▲ 12×2 topics
  33. Machine Translation2▲ 10×1 topic
  34. Permission Analysis2▲ 23×1 topic
  35. Word Representation2▲ 14×1 topic
  36. DDoS Attacks2▲ 14×1 topic
  37. Network Security2▲ 13×1 topic
  38. Emotion Recognition2▲ 7.7×2 topics
  39. Game Theory2▲ 8.4×4 topics
  40. Particulate Matter2▲ 10×2 topics

Which research topics does Computer Technology Institute and Press “DIOPHANTUS” publish most on?

By volume in 2022-now: IoT and Edge/Fog Computing, Topic Modeling, Advanced Malware Detection Techniques and Network Security and Intrusion Detection.

IoT and Edge/Fog Computing2IoT and Edge/Fog Computing: 2 fractional worksTopic Modeling2Topic Modeling: 2 fractional worksAdvanced Malware Detecti…2Advanced Malware Detection Techniques: 2 fractional worksNetwork Security and Int…2Network Security and Intrusion Detection: 2 fractional worksNatural Language Processing Techniques: 1 fractional worksBlockchain Technology Applications and Security: 1 fractional worksSmart Grid Security and …1Smart Grid Security and Resilience: 1 fractional worksInnovation in Digital Healthcare Systems: 1 fractional worksOnline Learning and Analytics: 1 fractional worksAir Quality Monitoring a…1Air Quality Monitoring and Forecasting: 1 fractional works
Computer Networks and CommunicationsArtificial IntelligenceSignal ProcessingInformation Systems4 others

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

  1. 1 IoT and Edge/Fog Computing Computer Networks and Communications 2 works
  2. 2 Topic Modeling Artificial Intelligence 2 works
  3. 3 Advanced Malware Detection Techniques Signal Processing 2 works
  4. 4 Network Security and Intrusion Detection Computer Networks and Communications 2 works
  5. 5 Natural Language Processing Techniques Artificial Intelligence 1 works
  6. 6 Blockchain Technology Applications and Security Information Systems 1 works
  7. 7 Smart Grid Security and Resilience Control and Systems Engineering 1 works
  8. 8 Innovation in Digital Healthcare Systems Health Information Management 1 works
  9. 9 Online Learning and Analytics Computer Science Applications 1 works
  10. 10 Air Quality Monitoring and Forecasting Environmental Engineering 1 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 available20.3%not open79.7%

World: 40% of research is openly available.

with international co-authors21.4%domestic only78.6%

World: 18% is written across borders.

How has Computer Technology Institute and Press “DIOPHANTUS”'s research output changed?

Output in 2022-2025 was 1% 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 Computer Technology Institute and Press “DIOPHANTUS” as a percentage of every work published that year, 0.00038% in 2024.

still counting0.0020%0.0040%0.0060%Computer Technology Institute and Press “DIOPHANTUS”0.00048% in 20251990200020102020

Fractional works of Computer Technology Institute and Press “DIOPHANTUS” 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%Computer Technology Institute and Press “DIOPHANTUS”14.4% in 2025all institutions10.0% in 2025200020102020

Of each year's output, the share that reached the world's 10% most cited for its field and year. Peak 14.4% in 2022.

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