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Takayasu Lab
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A physics lab that reads the behavior of economies and societies from big data.
AboutAbout the lab
Unraveling complex phenomena with big data.
The Takayasu Lab analyzes phenomena across a wide range of fields using methods from statistical physics, statistical science, and information science.
It observes phenomena through big data on human activity, the economy, and biological information, and builds minimal mathematical models that reproduce them.
Using the models it builds, the lab seeks to understand complex systems through theoretical analysis and simulation.
The lab has a big data analysis room equipped with security technology, and serves as a research hub for econophysics, sociophysics, and life science.
Key terms
- Econophysics
- A field that uses the ideas and methods of physics to explain economic phenomena such as the movements of markets and companies
- Power law
- A long-tailed distribution in which large events are rare and small events occur frequently
- Phase transition
- A sudden change in the state of an entire system when conditions change only slightly, like water turning into ice
NewsLab news
A paper on route choice in commuting was published in the Journal of Social Physics
The lab held an open house in conjunction with the School of Computing graduate school information session
A paper that captures the microbiome at the scale of an ecosystem was published in The ISME Journal
A graduate of the lab won the Outstanding Student Presentation Award at the Spring Meeting of the Physical Society of Japan
A paper on online opinions and emotional expression was presented at the international conference IEEE Big Data
ResearchResearch themes
The lab analyzes phenomena across a wide range of fields using various methods developed in statistical physics, statistical science, and information science. Its work covers modeling universal phenomena observed across fields, data analysis and modeling of economic and social systems, and data analysis and modeling of complex systems in life science.
*Illustrative imageBuilding and Analyzing Fundamental Mathematical Models
Research that focuses on spatiotemporal self-similar patterns and power laws, and seeks to understand their generating mechanisms through mathematical models. The lab also works on transport and phase transitions on complex networks, and on methods for detecting change points and decomposing trends in time series.
*Illustrative imageEconophysics and Sociophysics
The lab uses data to elucidate economic and social phenomena that arise from the interactions of many people, companies, and nations. It identifies statistical properties from big data, reproduces them with the simplest possible models, and then uses those models for prediction and for understanding the vulnerabilities of systems.
*Illustrative imageTransport in Autonomous Decentralized Systems
The Internet is a huge autonomous decentralized system that carries information electronically. By measuring the flow of information, the lab showed that a dynamical phase transition occurs between a congested phase and an uncongested phase, and that transport is most efficient at the critical point.
MembersFaculty
The members of the Takayasu Lab are faculty, visiting faculty, researchers, doctoral, master's, and undergraduate students, and administrative secretaries.As of 2026
- ProfessorMisako TakayasuPublications ↗
- Project ProfessorHideki Takayasu
- Project Assistant ProfessorArthur Matsuo Yamashita Rios de Souza
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Market centre in Tokyo stock exchange” ehnmark / CC BY 2.0 (cropped)
- Building and Analyzing Fundamental Mathematical Models: “KarperienFractalBranch” Audrey Karperien / CC BY-SA 3.0 (cropped)
- Econophysics and Sociophysics: “Electronic stock board in Yaesu, Tokyo 2007” nappa / CC BY 2.0 (cropped)
- Transport in Autonomous Decentralized Systems: “Internet map 1024” The Opte Project / CC BY 2.5 (cropped)
- Related lab (Shimosaka Lab): “Warsaw city center in winter at night December 2023” Oleslawlama / CC BY-SA 4.0 (cropped)
- Related lab (Shunsuke Ono Lab): “Cable racks at grid computing center, Fermilab with blue lights” ENERGY.GOV / Public domain (cropped)
- Related lab (Takinoue Lab): “2T7A4” Yma3591 / CC BY 4.0 (cropped)
- Related lab (Takashi Ishida Lab): “4xhe pinnatoxin pentamer” Opabinia regalis / CC BY-SA 4.0 (cropped)
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