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Research facility · Hanover · Germany

L3S Research Center

In research, L3S Research Center stands highest in Computer Science (#2,745 of 4,667 worldwide) and Physical Sciences (#8,446 of 12,888 worldwide), 2022–2025. Relative to its size it is most specialised in Artificial Intelligence and Computer Science — Artificial Intelligence is 12.2× its share of world research.

l3s.de/deROR OpenAlex
World rank, 2022–2025
#11,204
of 28,054 · #3,975 all time
Rank in Germany
#448
of 1,178
Research works
1.7k
▼ 11% vs 2013–17
Citations
39k
22.7 per fractional work
Top-10% rate
27.8%
record average 16.5%
Open access
30%
world 28%

What is L3S Research Center 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
Computer ScienceField #2,745 of 4,667 30.4%100 #1804
Physical SciencesDomain #8,446 of 12,888 27.0%133 #2619

Each strip is that field’s whole ranked pool, with the notch where L3S Research Center 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 L3S Research Center specialise in?

Where its research is concentrated relative to its size: Artificial Intelligence takes 12.2× the share of its output that it takes of world research.

  1. Artificial IntelligenceSubfield · 58.0 works12×
  2. Computer ScienceField · 99.6 works6.5×
← 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: 0.15× its world share, 1 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 0.78× its world share, 8 worksBiochemistry, Geneti…Immunology and Microbiology: 0.16× its world share, 0 worksImmunology and Micro…Neuroscience: 1.20× its world share, 4 worksNeurosciencePharmacology, Toxicology and Pharmaceutics: 0.16× its world share, 0 worksPharmacology, Toxico…Chemical Engineering: 0.16× its world share, 0 worksChemical EngineeringChemistry: 0.14× its world share, 0 worksChemistryComputer Science: 6.49× its world share, 100 worksComputer ScienceEarth and Planetary Sciences: 0.54× its world share, 2 worksEarth and Planetary …Energy: 0.12× its world share, 0 worksEnergyEngineering: 0.80× its world share, 24 worksEngineeringEnvironmental Science: 0.14× its world share, 1 worksEnvironmental ScienceMaterials Science: 0.15× its world share, 1 worksMaterials ScienceMathematics: 0.85× its world share, 2 worksMathematicsPhysics and Astronomy: 0.73× its world share, 3 worksPhysics and AstronomyDentistry: 0.12× its world share, 0 worksDentistryHealth Professions: 0.46× its world share, 2 worksHealth ProfessionsMedicine: 0.20× its world share, 8 worksMedicineArts and Humanities: 0.57× its world share, 3 worksArts and HumanitiesBusiness, Management and Accounting: 0.46× its world share, 3 worksBusiness, Management…Decision Sciences: 4.58× its world share, 9 worksDecision SciencesEconomics, Econometrics and Finance: 0.46× its world share, 2 worksEconomics, Econometr…Psychology: 0.39× its world share, 2 worksPsychologySocial Sciences: 0.84× its world share, 21 worksSocial Sciences1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Computer Science, 6.5×. Every wedge is a field page.

Who are the top researchers at L3S Research Center?

Ranked on the composite score, R. Bormann, Wolfgang Nejdl and F. Appel lead among researchers whose main affiliation is L3S Research Center.

  1. 1 R. Bormann Germany · #76,274 worldwide 565 citations · 39 works
  2. 2 Wolfgang Nejdl Germany · #198,776 worldwide 777 citations · 157 works
  3. 3 F. Appel Germany · #201,516 worldwide 204 citations · 39 works
  4. 4 Thomas Risse Germany · #286,181 worldwide 97 citations · 35 works
  5. 5 R. Doerffer Germany · #376,974 worldwide 118 citations · 24 works
  6. 6 H. Schwenke Germany · #386,655 worldwide 43 citations · 22 works
  7. 7 Elena Demidova Germany · #389,228 worldwide 123 citations · 32 works
  8. 8 W. Brocks Germany · #424,111 worldwide 94 citations · 37 works
  9. 9 F.P. Schimansky Germany · #435,638 worldwide 168 citations · 21 works
  10. 10 Richard Wagner Germany · #450,672 worldwide 294 citations · 232 works
All ranked researchers at L3S Research Center

Which keywords describe research at L3S Research Center?

By fractional works in 2022–2025, weighted toward what it does more of than the world: Deep Learning, Neural Networks, Machine Learning, Information Retrieval, Data Integration, Text Classification, Topic Modeling and Machine Translation.

▲ 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 Learning43▲ 6.3×50 topics
  2. Neural Networks30▲ 9.9×22 topics
  3. Machine Learning25▲ 3.8×43 topics
  4. Information Retrieval15▲ 34×4 topics
  5. Data Integration12▲ 38×4 topics
  6. Social Media12▲ 4.1×12 topics
  7. Text Classification12▲ 37×3 topics
  8. Topic Modeling10▲ 36×2 topics
  9. Machine Translation10▲ 31×2 topics
  10. Semantic Web10▲ 55×5 topics
  11. Semantic Similarity10▲ 42×1 topic
  12. Word Representation10▲ 42×1 topic
  13. Big Data9▲ 5.0×13 topics
  14. Linked Data6▲ 79×2 topics
  15. Representation Learning6▲ 22×3 topics
  16. Graph Convolutional Networks6▲ 27×2 topics
  17. Data Mining6▲ 3.9×6 topics
  18. Knowledge Representation6▲ 33×2 topics
  19. Natural Language Processing6▲ 12×5 topics
  20. Semi-Supervised Learning6▲ 26×3 topics
  21. Ontology6▲ 35×1 topic
  22. RDF6▲ 84×1 topic
  23. Security6▲ 4.3×8 topics
  24. Time Series5▲ 15×3 topics
  25. Text Mining5▲ 20×3 topics
  26. Heterogeneous Networks5▲ 24×2 topics
  27. Classification4▲ 4.9×6 topics
  28. Feature Extraction4▲ 4.9×5 topics
  29. Graph Neural Networks4▲ 47×1 topic
  30. Knowledge Graph Embedding4▲ 47×1 topic
  31. Surveillance4▲ 8.1×3 topics
  32. Deep Neural Networks4▲ 19×3 topics
  33. Polarization4▲ 13×2 topics
  34. Corpus Linguistics4▲ 9.0×2 topics
  35. Neural Machine Translation4▲ 19×1 topic
  36. Statistical Machine Translation4▲ 19×1 topic
  37. Information Quality4▲ 30×2 topics
  38. Data Cleaning3▲ 58×1 topic
  39. Fake News3▲ 26×1 topic
  40. Misinformation3▲ 26×1 topic

Which research topics does L3S Research Center publish most on?

By volume in 2022–2025: Topic Modeling, Semantic Web and Ontologies, Advanced Graph Neural Networks and Natural Language Processing Techniques.

Topic Modeling10Topic Modeling: 10 fractional worksSemantic Web and Ontologies: 6 fractional worksAdvanced Graph Neural Networks: 4 fractional worksNatural Language Processing Techniques: 4 fractional worksData Quality and Management: 3 fractional worksMisinformation and Its Impacts: 3 fractional worksBiomedical Text Mining a…3Biomedical Text Mining and Ontologies: 3 fractional worksPrivacy-Preserving Technologies in Data: 3 fractional worksAdversarial Robustness in Machine Learning: 3 fractional worksTime Series Analysis and Forecasting: 3 fractional works
Artificial IntelligenceManagement Science and Operations ResearchSociology and Political ScienceMolecular Biology1 others

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

  1. 1 Topic Modeling Artificial Intelligence 10 works
  2. 2 Semantic Web and Ontologies Artificial Intelligence 6 works
  3. 3 Advanced Graph Neural Networks Artificial Intelligence 4 works
  4. 4 Natural Language Processing Techniques Artificial Intelligence 4 works
  5. 5 Data Quality and Management Management Science and Operations Research 3 works
  6. 6 Misinformation and Its Impacts Sociology and Political Science 3 works
  7. 7 Biomedical Text Mining and Ontologies Molecular Biology 3 works
  8. 8 Privacy-Preserving Technologies in Data Artificial Intelligence 3 works
  9. 9 Adversarial Robustness in Machine Learning Artificial Intelligence 3 works
  10. 10 Time Series Analysis and Forecasting Signal Processing 3 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 available29.8%not open70.2%

World: 28% of research is openly available.

with international co-authors29.3%domestic only70.7%

World: 19% is written across borders.

How has L3S Research Center's research output changed?

Output in 2018–2022 was 11% 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 Hanover

All research institutions in Hanover

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.