Hiroshi Hirai
Hiroshi Hirai publishes mostly in Computational Theory and Mathematics, Electrical and Electronic Engineering and Atomic and Molecular Physics, and Optics, on topics such as Advanced Graph Theory Research, Complexity and Algorithms in Graphs and Quantum and electron transport phenomena.
- World rank
- #607,581 of 1,633,909 ranked researchers
- Rank in Japan
- #25,081 of 114,622
- Works
- 79
- Citations
- 161
- Citations per work
- 2.0
What does Hiroshi Hirai research?
Shares of their own output, by the field each of their topics belongs to. The grey slice is everything not listed.
- 1Computational Theory and Mathematics15% of their works
- 2Electrical and Electronic Engineering10% of their works
- 3Atomic and Molecular Physics, and Optics7% of their works
- 4Molecular Biology6% of their works
- 5Computer Vision and Pattern Recognition4% of their works
- 6Immunology3% of their works
Research topics
Which keywords describe Hiroshi Hirai's research?
The keywords of their largest research topics: Algorithmic Applications, Approximation Algorithms, Epidemiology, Graph Theory, Parameterized Complexity, Combinatorial Optimization, Complexity Theory and Genetic Characterization.
- Residuated Lattices
- Foot-and-Mouth Disease
- Bluetongue Virus
- Tunnel Field-Effect Transistors
- Infection
- Spintronics
- Genetic Characterization
- Combinatorial Optimization
- Graph Theory
- Approximation Algorithms
- Algorithmic Applications
- Epidemiology
- Parameterized Complexity
- Complexity Theory
- Semiconductor Quantum Dots
- HTLV-1
- Nanowire Transistors
- African Swine Fever
- Culicoides Biting Midges
- Fuzzy Logic
Size is their works in the topics tagged with each word, from their 8 largest topics. Each links to the topic it comes from most.
All 20 words, with their numbers
- Algorithmic Applications92 topics
- Approximation Algorithms92 topics
- Epidemiology52 topics
- Graph Theory51 topic
- Parameterized Complexity51 topic
- Combinatorial Optimization41 topic
- Complexity Theory41 topic
- Genetic Characterization42 topics
- Semiconductor Quantum Dots41 topic
- Spintronics41 topic
- HTLV-131 topic
- Infection31 topic
- Nanowire Transistors31 topic
- Tunnel Field-Effect Transistors31 topic
- African Swine Fever21 topic
- Bluetongue Virus21 topic
- Culicoides Biting Midges21 topic
- Foot-and-Mouth Disease21 topic
- Fuzzy Logic21 topic
- Residuated Lattices21 topic
Where does Hiroshi Hirai work?
Hiroshi Hirai's main affiliation in the publication record is The University of Tokyo, Japan.
How many publications and citations does Hiroshi Hirai have?
Science Explorer counts 79 works and 161 citations for Hiroshi Hirai, ranking #607,581 of 1,633,909 researchers worldwide on the composite score.
Ranked on field-normalised excellence (50%), output (30%) and citations (20%). Counts come from OpenAlex author records, which occasionally merge different people who share a name or split one person into several.
Other researchers named Hiroshi Hirai
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