Hidetoshi Yokoo

Hello and welcome to my WWW Home Page!

I am Professor of the Department of Computer Science at Gunma University. I have been in Gunma since March 1989. I received B.Eng., M.Eng., and Ph.D. degrees all from the Department of Mathematical Engineering and Information Physics, the University of Tokyo.
I was a visiting researcher at the University of Waikato, New Zealand, from 1993 to 1994.

Mailing Address:

Prof. Hidetoshi Yokoo
Department of Computer Science
Gunma University
Kiryu 376-8515
JAPAN

Research Interests

• Data Compression
  1. Design and analysis of adaptive algorithms for lossless compression
  2. Information theoretical basis for data compression, theory of universal coding
  3. Applications of data compression to computer science in general

Selected Publications

Improved variations relating the Ziv-Lempel and Welch-type algorithms for sequential data compression. IEEE Transactions on Information Theory, Vol.38, No.1, pp.73-81 (1992).

Overflow/underflow-free floating-point number representations with self-delimiting variable-length exponent field. IEEE Transactions on Computers, Vol.41, No.8, pp.1033-1039 (1992).

Adaptive encoding for numerical data compression. Information Processing & Management, Vol.30, No.6, pp.863-873 (1994).

Data compression using a sort-based context similarity measure. Computer Journal, Vol. 40, No. 2/3, pp.94-102 (1997).

Average-sense optimality and competitive optimality for almost instantaneous VF codes. (coauthor: H. Yamamoto), IEEE Trans. Inform. Theory, Vol. 47, No. 6, pp. 2174-2184 (2001).

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