KINDAI UNIVERSITY


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ISHIMIZU Takashi

Profile

FacultyDepartment of Informatics
PositionLecturer
Degree
Commentator Guidehttps://www.kindai.ac.jp/meikan/461-ishimizu-takashi.html
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Last Updated :2020/09/30

Research Activities

Research Areas

  • Informatics, Information theory

Published Papers

  • Concurrent differential evolution for uncertain optimization problems, The Fifth International Conference on Advanced Engineering Computing and Applications in Sciences, The Fifth International Conference on Advanced Engineering Computing and Applications in Sciences, 48 - 53, Nov. 2011
  • A Structured Differential Evolutions for Various Network Topologies, INTERNATIONAL JOURNAL of COMPUTERS AND COMMUNICATIONS, INTERNATIONAL JOURNAL of COMPUTERS AND COMMUNICATIONS, 1(4), 1 - 8, Dec. 2010
  • Concurrent differential evolution based on MapReduce, International Journal of Computers, International Journal of Computers, 4(4), 161 - 168, 2010
  • Concurrent implementation on differential evolutuon, Proceedings of 10th WSEAS Int. Conf. on Systems Theory and Scientific Computation, Proceedings of 10th WSEAS Int. Conf. on Systems Theory and Scientific Computation, 65 - 70, 2010
  • Parallel algorithms for selection on the BSP and BSP models, Takashi Ishimizu, Akihiro Fujiwara, Michiko Inoue, Toshimitsu Masuzawa, Hideo Fujiwara, Systems and Computers in Japan, Systems and Computers in Japan, 33(12), 97 - 107, Nov. 15 2002
    Summary:In this paper, we propose parallel algorithms to solve the selection problem on the Bulk-Synchronous Parallel (BSP) model and the BSP* model. The BSP and BSP* models are recently proposed parallel computation models. They can represent the communication cost, a vital element in the latest parallel computations, in terms of the parameters of the synchronization period L, the reciprocal g of the communication network bandwidth, and the packet size B. In this paper, we propose a parallel algorithm having an internal computation time O[(n/p) + d log p log log n + L (log p log log n)/(log d)] and a communication time O[g(n/p) + (gd + L) (log p log log n)/(log d)], on the BSP model, and a parallel algorithm having an internal computation time O[(n/p) + d log p log log n + L(log p log log n)/(log d)] and a communication time O[g(n/(pB)) + (n/p)1/7(log p)6/7 + (gd + L) (log p log log n)/(log d)] on the BSP* model for any integer d (1 ≤ d ≤ log n) to solve the problem of selecting n data with p processors.
  • A Comparative Study of Distance Dependent Survival Selections for Sequential DE, Kiyoharu Tagawa, Takashi Ishimizu, IEEE INTERNATIONAL CONFERENCE ON SYSTEMS, MAN AND CYBERNETICS (SMC 2010), IEEE INTERNATIONAL CONFERENCE ON SYSTEMS, MAN AND CYBERNETICS (SMC 2010), 3493 - 3500, 2010
    Summary:Many of the conventional Differential Evolutions (DEs) have employed the discrete generation model that uses two populations, namely, old one and new one. Recently, a new DE based on the continuous generation model is proposed. In the continuous generation model, only one population is used. The new DE is sometimes called Sequential DE (SDE). Besides better convergence, SDE has some advantages. For instance, it becomes easy to introduce various survival selections into SDE. Therefore, four survival selections depending on the distance between two individuals are presented for SDE. Furthermore, in order to compare the effects of the distance dependent survival selections on SDE, not only the numerical experiment but also the statistical test is conducted on various benchmark problems.

Conference Activities & Talks

  • Experiment Study of A Structured Differential Evolution with Mixed Strategies, World Congress on Nature and Biologocally Inspired Computing,   2010 12 , World Congress on Nature and Biologocally Inspired Computing
  • An implementation of differential evolution for multi-core processors,   2010 10
  • A Comparative Study of Structured Differential Evolutions, The 10th International Conference on APPLIED COMPUTER SCIENCE (ACS'10),   2010 10 , The 10th International Conference on APPLIED COMPUTER SCIENCE (ACS'10)
  • 2D-data partition on the Heterogeneous BSP model, The International Association of Science and Technology for Development (IASTED),   2003 11 , The International Association of Science and Technology for Development (IASTED)
  • 2D-data partition on the Heterogeneous BSP model,   2002 09