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Y.Maeda, S.Hirasawa, and M.Gotoh, "Molectronization of four wire PAM switching circuits," Mitsubishi Denki-Gihoh, vol.41, no.9, pp.1057-1061, Sept.1970
S.Hirasawa, F.Yamano, T.Yano, T.Yamanaka, and T.Yamauchi, "A simplified version of multi-processor systems using a common memory," IEEE Proc. Trends and Applications: 1979, MD U.S.A. pp.132-139,May 1979.
H.Inazumi, and S.Hirasawa, "On the consecutive retrieval property in file organization, Proc. Int. Conf. on Foundations of Data Organization, pp.69-73, Kyoto, Japan, May 1985.
H.Inazumi, and S.Hirasawa, "Memory versus error trade-offs in binary-valued retrieval problems," IEEE Trans. Syst. Man, Cybern, vol. SMC-14, m,5, pp. 780-784, Oct. 1984.
H.Inazumi, S.Hirasawa, and H.Fujii, "A Further discussion on the information retrieval systems with cluster-outputs," Proc. IEEE Int. Conf. Syst. Man, Cybern, pp.1097-1102, GA, U.S.A., Oct. 1986.
H.Inazumi, and S.Hirasawa, "On analysis of the modified version of the consecutive retrieval file organization," IEEE Trans. Syst. Man, Cybern, vol. SMC-17, no.2, pp.222-228, Mar./Apr. 1987.
H.Inazumi, and S.Hirasawa, "On the relaxed consecutive retrieval property in file organization," Foundations of Data Organization, pp.103-112, Plenum Publishing Corp. 1987.
J.Suzuki, T.Matsushima, H.Inazumi, and S.Hirasawa, "Stopping rules with the thresholds of a posterior probability for every pattern and every stage," (in Japanese) IEICE Trans. Fundamentals, vol.J71-A, no.6, pp.1299-1308, June 1988.
H.Inazumi, M.Kochiya, and S.Hirasawa, "On the trade-offs between the file redundancy and the communication costs in distributed database systems," IEEE Trans. Syst. Man, Cybern, vol. SMC-19, no.1, pp.108-112, Jan. 1989.
T.Matsushima, and S.Hirasawa, "Applications of information theory into predicate logic for AI systems," Trans, IEICE, vol.E-72, no.5, pp.443-451, May 1989.
S.Hirasawa, and H.Inazumi, "On system modeling based on information theory," Bulletin System, Sci. Lab. Waseda Univ. no.21, pp.147-190, Mar.1990.
T.Matsushima, and S.Hirasawa, "Inductive inference and description length," (in Japanese), Proc. AI Soc. vol.7, no.4, pp.615-621, July 1992.
J.Suzuki, Y.Ohdake, and S.Hirasawa, "Selection of the stochastic model based on the minimum description length principle and state decomposition," (in
Japanese), Journal of JIPS, vol.33, no.11, pp.1281-1289, Nov.1992.
T.Matsushima, H.Inazumi, and S.Hirasawa, "Inductive inference for uncertain formulas from the viewpoint of information theory," (in Japanese), Journal of JIPS, vol.33, no.12, pp.1461-1475, Dec.1992.
M.Suzuki, T.Matsushima, and S.Hirasawa, "On knowledge representation and reasoning system with a range of certainty factors," (in Japanese), Journal of JIPS, vol,35, no.5, pp.691-705, May 1994.
M.Nakazawa, T.Kohnosu, T.Matsushima, and S.Hirasawa, "On the complexity of hypothesis space and the sample complexity for machine learning," Proc. 1999 IEEE Conf. Syst. Man, Cybern, San Antonio, TX U.S.A., pp.132-137, June 1994.
M.Gotoh, S.Hirasawa, and N.Tawara, "A formulation by minimization of differential entropy for optimum control systems," IEICE Trans, Fundamentals, vol.E79-A, no.4, pp.569-577, Apr.1996.
S.Hirasawa, "Commentary on the draft code of ethics on information / communication - Quality assurance - , " (in Japanese), Conf. Proc. IEICE, Kanazawa, Sept. 1996.
S.Hirasawa, and M.Kasahara, "A note on the ethics for design of information communication systems," (in Japanese) Tech. Rep. IEICE, Face 96 - 28, Dec, 1996.
Y.Ukita, T.Matsushima, and S.Hirasawa, "A note on decision theoretic formulation for learning from queries," (in Japanese), Journal of JIPS, vol.39, no.11, pp.2937-2948, Nov.1998.
T.Futagami, T.Matsushima, and S.Hirasawa, "Compression of files for document retrieval system," Proc. of 1998 Int. Symp. Infrom. Theory and its Appl., pp.290-293, Mexico City, Mexico, Oct. 1998.
M.Gotoh, T.Matsushima, and S.Hirasawa, "On consistency of Bayesian model selection," Proc. ISITA '98, pp.600-603, Mexico City, Mexico, Oct.1998.
S.Lee, T.Matsushima, and S.Hirasawa, "Non-hierarchical clustering using genetic algorithm (GA)," Proc. ISITA '98, pp.612-615, Mexico City, Mexico, Oct.1998.
M.Suzuki, T.Matsushima, and S.Hirasawa, "On a reasoning model with knowledge representation matrix," Proc. of 1998 Int. Symp. Infrom. Theory and its Appl. (ISITA '98), pp.608-611, Mexico City, Mexico, Oct. 1998.
M.Gotoh, and S.Hirasawa, "Statistical model selection based on Bayes decision theory and its application to change detection problem," Int. J. Production Economics, 60-61, pp.629-638, Jan.1999.
M.Gotoh, T.Matsushima, and S.Hirasawa, "Almost sure and mean convergence of extended stochastic complexity," IEICE Trans. Fundamentals, vol.E82-A, no.10, pp.2129-2137, Oct.1999.
M.Suzuki, T.Matsushima, and S.Hirasawa, "On a deductive reasoning model and method for uncertainty," 11-th IEEE Int. Conf. on Tools with AI(ICTAI'99), pp.161-164, Chicago, U.S.A.,Nov. 1999.
M.Suzuki, T.Matsushima, and S.Hirasawa, "On a reasoning model and method for uncertainty," (in Japanese), Journal of IPSJ , vol.41, no.1, pp.1-11, Jan. 2000.
M.Gotoh, T.Matsushima, and S.Hirasawa, "An analysis on error rate of statistical model selection based on Bayes decision theory," (in Japanese), Journal of JIMA, vol.50, no.6, pp. 475-484, June 2000.
S. Hirasawa, and H. Inazumi,"A model for system evaluation based on information theory, Proc. of 2000 Int. Conf. on Management Sciences, pp. 41-46, Taipei, R.O.C., June 2000.
Y.Ukita, T.Matsushima, and S.Hirasawa, "A note on learning Boolean function by using orthogonal design," (in Japanese), IEICE Trans. Fundamentals, vol.J86-A, no.4, pp.482-490, Apr. 2003.
S.Hirasawa and W.W.Chu, "Knowledge acquisition from documents with both fixed and free formats," Proc. of 2003 IEEE Int.Conf. on System, Man, and Cybernetics, pp.4694-4699, Washington DC, U.S.A.,Oct. 2003.
M.Goto, T.Ishida and S.Hirasawa, "Representation method for a set of documents from the viewpoint of Bayesian statistics," Proc. of 2003 IEEE Int. Conf. on System, Man, and Cybernetics, pp.4637-4642, Washington DC, U.S.A.,Oct. 2003.
S.Hirasawa and W.W.Chu, "Classification methods for documents with both free and fixed formats," Proceeding of The 2004 International Conference in Management Sciences and Decision Making, pp.427-444, Taipei, R.O.C., May 2004.
S.Hirasawa, "A supprot system for research activity using the Internet," A short course at Tamkang University, Taipei, R.O.C., May 2004.
S.Hirasawa, "Knowledge discovery from documents--A case of improvements for quality of education--," A short course at Tamkang University, Taipei, R.O.C., May 2004.
S.Hirasawa, "A collaboration support system for environmental protection using networks between Japan and ROC," The Forum on Environmemtal Protection, Taipei, Taiwan, R.O.C., Dec. 2004.
T.Ishida, M.Gotoh, and S.Hirasawa,"Analysis of student questionnaire in the lecture of computer science," (in Japanese), Computer and Education, CIEC, vol.18, pp.152-157, June 2005.
Takashi Ishida, Masayuki Goto, and Shigeichi Hirasawa, "Analysis of student questionnaire in the lecture of computer science," (in Japanese), Computers and Education, vol.18, pp.152-157, May 2005.
M. Goto, T. Masui, S. Hirasawa, and N. Tawara, Information theoretic consideration of multi-layered inventory process Proc. of the 18-th Inr. Conf. on Prod. Res., pp. Italy, Aug. 2005.
Katsuyuki Umezawa, Seiichi Susaki, Satoru Tezuka, and Shigeichi Hirasawa, "Development and evaluation of a certificate validation system in mobile environments," IEEJ Transactions on Electrical and Electronic Engineering, Vol.2, No.1, pp.84-93, Jan. 2007.
Katuyuki Imezawa, Mitsuhiro Oikawa, Seiichi Susaki, Satoru Tezuka, and Sigeichi Hirasawa, "Developmemt of a certificate validation system for a mobile netwark," (in Japanese) IPSJ Journal, vol.48. no.2, pp.84-93, Feb. 2007.
Katsuyuki Umezawa, Mitsuhiro Oikawa, Seiichi Susaki, Satoru Tezuka, and Sigeichi Hirasawa, "Evaluation of certificate verification methods in mobile environment,"(in Japanese), IEICE Trans. Systems, vol.J90-D, no.2, pp.384-398, Feb. 2007.
Makoto Suzuki and Shigeichi Hirasawa, "Text categorization based on the ratio of word frequency in each categories," Proc. 2007 IEEE International Conference on System, Man and Cybernetics, Montreal, Canada, Oct. 2007.
Shigeichi Hirasawa, Fu-Yih Shih, and Wei-Tzen Yang, "Student questionnaire analyses for class management by text mining both in Japanese and in Chinese," Proc. 2007 IEEE International Conference on System, Man and Cybernetics, Montreal, Canada, Oct. 2007.
Masayuki Goto, Takashi Ishida, and Shigeichi Hirasawa, "Statistical evaluation of measure and distance on document classification problems in text mining," Proc. IEEE 7th International Conference on Computer and Information Technology (CIT2007), Fukushima, Japan, Oct. 2007.
Takashi Ishida, Masayuki Goto, Toshiyasu Matsushima, and Shigeichi Hirasawa, "Word segmentation for the sequences emitted from a word-valued source," Proc. IEEE 7th International Conference on Computer and Information Technology (CIT2007), Fukushima, Japan, Oct. 2007.
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