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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 (#10,860 of 12,888 worldwide), 2022–2025. Relative to its size it is most specialised in Computer Science — Computer Science is 5.2× its share of world research.

cti.grROR OpenAlex
World rank, 2022–2025
#18,682
of 28,054 · #14,476 all time
Rank in Greece
#88
of 124
Research works
1.5k
▼ 54% vs 2013–17
Citations
23k
15.3 per fractional work
Top-10% rate
21.1%
record average 16.5%
Open access
20%
world 28%

What is Computer Technology Institute and Press “DIOPHANTUS” known for in research?

The fields where it stands highest, 2022–2025, ranked among every institution above the floor in each field.

FieldWorld rankWhere that sitsTop-10% rateWorksAll time
Physical SciencesDomain #10,860 of 12,888 19.5%62 #9876

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 world mark, because the world rate differs by field (from about 6% to 21% in this record).

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

Where its research is concentrated relative to its size: Computer Science takes 5.2× the share of its output that it takes of world research.

  1. Computer ScienceField · 38.2 works5.2×
← 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: 0.15× its world share, 1 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 0.26× its world share, 1 worksBiochemistry, Geneti…Immunology and Microbiology: 0.96× its world share, 1 worksImmunology and Micro…Neuroscience: 0.52× its world share, 1 worksNeuroscienceChemistry: 0.11× its world share, 0 worksChemistryComputer Science: 5.18× its world share, 38 worksComputer ScienceEarth and Planetary Sciences: 0.21× its world share, 0 worksEarth and Planetary …Energy: 0.45× its world share, 0 worksEnergyEngineering: 1.27× its world share, 18 worksEngineeringEnvironmental Science: 0.66× its world share, 3 worksEnvironmental ScienceMaterials Science: 0.13× its world share, 0 worksMaterials ScienceMathematics: 0.76× its world share, 1 worksMathematicsPhysics and Astronomy: 0.39× its world share, 1 worksPhysics and AstronomyHealth Professions: 1.19× its world share, 3 worksHealth ProfessionsMedicine: 0.35× its world share, 6 worksMedicineNursing: 0.14× its world share, 0 worksNursingArts and Humanities: 0.18× its world share, 0 worksArts and HumanitiesBusiness, Management and Accounting: 1.73× its world share, 5 worksBusiness, Management…Decision Sciences: 2.17× its world share, 2 worksDecision SciencesEconomics, Econometrics and Finance: 0.28× its world share, 1 worksEconomics, Econometr…Psychology: 0.88× its world share, 2 worksPsychologySocial Sciences: 0.71× its world share, 8 worksSocial Sciences1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Computer Science, 5.2×. Every wedge is a field page.

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

Ranked on the composite score, Ioannis Chatzigiannakis, Othon Michail and Paul G. Spirakis lead among researchers whose main affiliation is Computer Technology Institute and Press “DIOPHANTUS”.

  1. 1 Ioannis Chatzigiannakis Greece · #197,233 worldwide 279 citations · 61 works
  2. 2 Othon Michail Greece · #332,216 worldwide 121 citations · 34 works
  3. 3 Paul G. Spirakis Greece · #685,579 worldwide 447 citations · 207 works
  4. 4 Thanasis Hadzilacos Greece · #686,631 worldwide 40 citations · 23 works
  5. 5 Christoforos Raptopoulos Greece · #889,320 worldwide 68 citations · 22 works
  6. 6 Georgios Mylonas Greece · #907,520 worldwide 65 citations · 33 works
  7. 7 Andreas Papazois Greece · #1,097,260 worldwide 35 citations · 18 works
  8. 8 Vaggelis Kapoulas Greece · #1,455,205 worldwide 18 citations · 17 works
  9. 9 Agisilaos Konidaris Greece · #1,506,942 worldwide 17 citations · 15 works
  10. 10 Irene Mavrommati Greece · #1,614,269 worldwide 11 citations · 16 works
All ranked researchers at Computer Technology Institute and Press “DIOPHANTUS”

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

By fractional works in 2022–2025, weighted toward what it does more of than the world: Deep Learning, Machine Learning, Neural Networks, Healthcare, IoT Security, Internet of Things, Security and 5G Networks.

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

Size is fractional works in 2022–2025 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 Learning17▲ 5.1×43 topics
  2. Machine Learning14▲ 4.6×32 topics
  3. Neural Networks8▲ 5.6×22 topics
  4. Healthcare6▲ 5.9×8 topics
  5. IoT Security5▲ 18×3 topics
  6. Internet of Things5▲ 5.9×10 topics
  7. Security4▲ 6.9×11 topics
  8. Supply Chain Management3▲ 3.3×6 topics
  9. 5G Networks3▲ 15×3 topics
  10. Anomaly Detection3▲ 9.9×3 topics
  11. Data Mining3▲ 3.8×5 topics
  12. Smart Cities3▲ 11×4 topics
  13. Cybersecurity3▲ 11×3 topics
  14. Topic Modeling3▲ 19×2 topics
  15. Privacy2▲ 8.9×4 topics
  16. IoT2▲ 6.9×7 topics
  17. Security Analysis2▲ 15×4 topics
  18. Information Retrieval2▲ 11×4 topics
  19. Behavioral Analysis2▲ 19×2 topics
  20. Detection2▲ 7.4×2 topics
  21. Cyber-Physical Systems2▲ 8.1×5 topics
  22. Environmental Management2▲ 5.3×4 topics
  23. Mobile Edge Computing2▲ 13×2 topics
  24. Security and Privacy2▲ 11×2 topics
  25. Android Malware2▲ 24×1 topic
  26. Edge Computing2▲ 15×1 topic
  27. Fog Computing2▲ 16×1 topic
  28. Intrusion Detection2▲ 13×2 topics
  29. Permission Analysis2▲ 24×1 topic
  30. Text Classification2▲ 12×2 topics
  31. DDoS Attacks2▲ 15×1 topic
  32. Network Security2▲ 14×1 topic
  33. Surveillance2▲ 6.7×3 topics
  34. Machine Translation2▲ 10×1 topic
  35. Word Representation2▲ 14×1 topic
  36. Particulate Matter2▲ 10×2 topics
  37. Sentiment Analysis2▲ 14×2 topics
  38. Emotion Recognition1▲ 8.1×2 topics
  39. Neural Machine Translation1▲ 16×1 topic
  40. Statistical Machine Translation1▲ 16×1 topic

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

By volume in 2022–2025: IoT and Edge/Fog Computing, Advanced Malware Detection Techniques, Network Security and Intrusion Detection and Topic Modeling.

IoT and Edge/Fog Computing2IoT and Edge/Fog Computing: 2 fractional worksAdvanced Malware Detecti…2Advanced Malware Detection Techniques: 2 fractional worksNetwork Security and Int…2Network Security and Intrusion Detection: 2 fractional worksTopic Modeling2Topic Modeling: 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 worksAir Quality Monitoring and Forecasting: 1 fractional worksOnline Learning and Analytics: 1 fractional worksInnovation in Digital He…1Innovation in Digital Healthcare Systems: 1 fractional works
Computer Networks and CommunicationsSignal ProcessingArtificial IntelligenceInformation 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 Advanced Malware Detection Techniques Signal Processing 2 works
  3. 3 Network Security and Intrusion Detection Computer Networks and Communications 2 works
  4. 4 Topic Modeling Artificial Intelligence 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 Air Quality Monitoring and Forecasting Environmental Engineering 1 works
  9. 9 Online Learning and Analytics Computer Science Applications 1 works
  10. 10 Innovation in Digital Healthcare Systems Health Information Management 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: 28% of research is openly available.

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

World: 19% is written across borders.

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

Output in 2018–2022 was 54% lower than in 2013–2017.

1990200020102020
grewheldshrank

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

Other research institutions in Pátrai

All research institutions in Pátrai

Research measures only: rankings here say nothing about teaching, admissions or student experience. Comparable institutions and collaboration partners are in the interactive view on the map.