Yoshito Hirata, PhD

address: Institute of Industrial Science,
The University of Tokyo,
4-6-1 Komaba, Meguro-ku,
Tokyo 153-8505,
email: yoshito at sat dot t dot u-tokyo dot ac dot jp
telephone: +81 3 5452 6697
fax: +81 3 5452 6694

Research topics

Nonlinear time series analysis:

I am interested in developing methods of nonlinear time series analysis and applying them to various nonlinear phenomena. Nonlinear time series analysis provides not only useful information on the underlying dynamics but means of their prediction and control. So far, I have been developing methods using delay coordinates, recurrence plots, surrogate tests, symbolic analysis, and point process analysis. I have also applied these methods to real datasets measured from neurons, brains, heartbeats, winds, solar irradiation, cancers, amoebas, economies, and earthquakes.

Quantitative cancer research (Quantitative oncology):

Among the various applications mentioned above, I am currently particularly interested in proposing mathematical methods for cancers. I proposed a mathematical model of prostate cancer under intermittent androgen suppression, which describes changes of prostate specific antigen, a tumor marker, quantitatively well. In addition, I also proposed an optimal schedule for intermittent androgen suppression using this mathematical model.


Please write to me when you need consultation on time series analysis.