Takefuji Lab. is a neural and multimedia center for solving real-world problems including cybersecurity problems, VLSI CAD, medical imaging, molecular biology, operations research, mathematics, games, management science, agriculture, financial engineering, computer-art, energy-harvesting, and other intractable problems.

Our projects has been or had been supported by Information-technology Promotion Agency of METI, TEPCO, Moritani, necmagnus, KAST, jaxa, NHK, Mitsubishi( retina camera, wireless), FujiXerox, Tripwire, Science Park, ai-cynap, Device Drivers, Suzuki, startek, clara, scarabs, instructional design, creator's, roumap, freegene, groovymedia, ousia, Sharp, Beat, JR-east, signaCert, Obayashi, Kajima, mitsubishi-enpitsu, toadoro, quality, zenta, genexus, kanagawa, aizu_denryoku, JWA, yamazaki, kankyoResearch, archeco, inclusionjapan, honda-ms, niigata-techno, yuki, daiyufreeze, tf-service, MaBeee, Morita-miyata, Shannon Lab, and other organizations.

We have been supporting the CEDECI project in Argentina from Nov., 1995 , the PSDI (Philippine Software Development Institute) of National Computer Center of the Philippine government from March 30, 1997, and VITTI (Vietnam Information Technology Training Institute) from June 4, 1998, Royal Scientific Society project in Jordan from Jan. 28, 2001 CTTISC, SriLanka project from Dec. 2 of 2003 through the assistance of the JICA, and Multimedia University of Malaysia. We have also been supporting Tomoe soroban, JNSA, Institute of tropical medicine , Japan Food Service Association , TrustE, balance-tsumiki,


Title Romanesco_photoed_by_takefuji

--------Science publications by Yoshiyasu Takefuji--------

35. Communication codes have been oscillating Science (eLetter, 12 October 2017)

34. Finland has several solutions for diversity initiatives problems Science (eLetter, 12 October 2017)

33. Tuna has efficient hydrodynamic multiple small fins for stability Science (eLetter, 7 October 2017)

32. Balanced heat flux (flow) is needed in thermoelectric power generation Science (eLetter, 6 October 2017)

31. Flat heat pipes can enhance electrocaloric cooling by improving heat dissipation to the air Science (eLetter, September 26 2017)

30. Machine learning should be used for improving weather forecast Science (eLetter, September 18 2017)

29. Japanese postdocs are getting older Science (eLetter, September 8 2017)

28. Adding random bias plays a key role for suppressing the effect of bias itself Science (eLetter, September 7 2017)

27. Openness is a key for successfully driving profit organizations Science (eLetter, August 28 2017)

26. Durability is a key for energy harvesting Science (eLetter, August 25 2017)

25. A conflict of interest plays a key role in shaping Wikipedia Science (eLetter, August 22 2017)

24. The role of government is changing Science (eLetter, August 22 2017)

23. There is no perfect review system, Science (eLetter, August 7 2017)

22. Automated reasoning, self-organization, and optimization should be added in AI Glossary, Science (eLetter, August 4 2017)

21. Open source software is indeed based on modularity and abstraction, Science (eLetter, July 24 2017)

20. Reproducibility is a key for real peer-reviewed evaluations, Science (eLetter, July 21 2017)

19. "GPU" and "open source software" play a key role for advancing deep learning, Science (eLetter, July 20 2017)

18. Embedded security is needed in BMI devices, Science (eLetter, July 20 2017)

17. Why shouldn't we combine satellite data with mobile data? Science (eLetter, July 14 2017)

16. Deja vu for U.S. and Japan nuclear waste, Science (eLetter, July 6 2017)

15. Weighted relative citation ratio means the research success?, Science (eLetter, June 29 2017)

14. J1, H-2B, L1, B1, E2, TN1, and E3 are all nonimmigrant visas for temporary working in the US, Science (eLetter, June 6 2017)

13. Infrasound monitoring is needed for investigating noise pollution, Science (eLetter, May 5 2017)

12. Confined unfrozen water plays a key role for water pipe repairs, Science Advances (eLetter, March 14 2017)

11. The large government funds should be shared with many researchers, Science (eLetter, April 20 2017)

10. Amateurism is the mother of invention, Science (eLetter, April 15 2017)

9. Problems of photovoltaics solar energy, Science (eLetter, April 14 2017)

8. Ensemble methods significantly improve prediction, Science (eLetter, April 12 2017)

7. Statistical syllogism and deductive syllogism in software packages, Science (eLetter, April 12 2017)

6. Inductive and deductive reasoning must be merged for enhancing prediction and breaking its limits, Science (eLetter, April 8 2017)

5. Ensemble methods can improve election prediction, Science (eLetter, April 7 2017)

4. Cooling power can be improved by overlaying metamaterials, Science (eLetter, March 31 2017)

3. Magma energy power plant, Science (eLetter, March 11 2017)

2. Black box is not safe at all, Science (eLetter, October 20 2016)

1. A near-optimum parallel planarization algorithm, (Sept. 15 1989) Science, pp.1221-1223

----------Science published by Shino Iwami---------

3. Finnish and Japanese systems for genomic analysis, and an expectation for interdisciplinary research, Science (eLetter, 16 October 2017)

2. Historical information is available additionally for disaster mitigation, Science (eLetter, Sept. 27 2017)

1. Evidences ignore information of unformatted or untargeted data Science, Science (eLetter, Sept. 19 2017)


音力発電および速水君は JR東日本が実験してきている発電床プロジェクトとは、





Motorcycle thermoelectric power generation


TBS radio

NHK World

Weather in Fujisawa

Fastest SOM algorithm in the world

Thermoelectric power generator

Shugiin internet TV

ultra-low cost internet gadget design (Ohmsha)

Circuit Cellar (open source)

Elekijack (open source)

Transistor-Gijutsu (open source)

Iwanami Junior book

Technology and Society(現代技術と社会) in Spring 2017

Takefuji lab. projects

RFID newspaper articles

Best small hotel in Nagasaki

E-kit projects


Public Source


Long-term Projects


Demo pages


Security articles & comments

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Prof. Yoshiyasu Takefuji Email: takefuji (at mark)sfc.keio.ac.jp
Keio University
Faculty of Environmentral Information
5322 Endo, Fujisawa
2520882 JAPAN
Fax: +81-466-47-5041
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