Seiki Kyan
University of the Ryukyus
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Publication
Featured researches published by Seiki Kyan.
SIAM Journal on Computing | 1986
Tsuyoshi Kawaguchi; Seiki Kyan
This paper studies the problem of scheduling a set of n independent tasks on m identical processors so as to minimize mean weighted flow-time. The problem is known to be NP-complete for
international symposium on circuits and systems | 1995
Morikazu Nakamura; Kenji Onaga; Seiki Kyan; Manuel Silva
m \geqq 2
international symposium on circuits and systems | 1993
Morikazu Nakamura; Kenji Onaga; Seiki Kyan
and to be NP-complete in the strong sense for m arbitrary.The worst case behavior of a heuristic algorithm which requires time
Systems and Computers in Japan | 2007
Tsuyoshi Kawaguchi; Seiki Kyan; Kenji Onaga
O(n\log n)
international symposium on circuits and systems | 1992
Morikazu Nakamura; Seiki Kyan; Kenji Onaga
is investigated, and it is shown that the mean weighted flow-time obtained by the algorithm does not exceed
international symposium on circuits and systems | 1989
Tsuyoshi Kawaguchi; Seiki Kyan; Yuji Taniguchi; Kenji Onaga
{{(\sqrt 2 + 1)} / 2} \cong 1.0207
Systems and Computers in Japan | 1989
Tsuyoshi Kawaguchi; Yuji Taniguchi; Seiki Kyan
times that of an optimal schedule. Moreover the bound
Journal of The Operations Research Society of Japan | 1988
Tsuyoshi Kawaguchi; Seiki Kyan
{{(\sqrt 2 + 1)} / 2}
沖縄大学マルチメディア教育研究センター紀要 = The Bulletin of Multimedia Education and Research Center, University of Okinawa | 2008
盛基 喜屋武; 盛和 名嘉村; 真一 島; Seiki Kyan; Morikazu Nakamura; Sinnichi Shima; 沖縄大学マルチメディア教育研究センター; 琉球大学工学部情報工学科; 専修学校国際電子ビジネス専門学校
is best possible.
電子情報通信学会技術研究報告. CAS, 回路とシステム | 1995
Koji Shimabukuro; Morikazu Nakamura; Koichi Arakaki; Kenji Onaga; Seiki Kyan
In this paper we consider a sex-fair matching in the stable marriage problem. The sex-fair stable matching defined in this paper has a property that the sum of the partners rank of each man in his preference list is as close as possible to the sum of the partners rank of each woman in her preference list. We transform the sex-fair marriage problem into a graph problem which is suitable for a genetic algorithm. We propose a genetic algorithm for the sex-fair stable matching. The transformation into the graph problem makes application of the GA easier and effective. Computer experiments show the effectiveness of the proposed genetic algorithm.