Transactions of the Institute of Systems, Control and Information Engineers
New Arrival Alert : OFF

You can use this feature after you logged into the site.
Please click the button below.

Log in / Sign up
ONLINE ISSN: 2185-811X
PRINT ISSN: 1342-5668

Transactions of the Institute of Systems, Control and Information Engineers Vol. 22 (2009), No. 1

  • Asynchronous Parallel Distributed Genetic Algorithm by Layered Server-Client Model

    pp. 1-12

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up

    DOI:10.5687/iscie.22.1

    The most popular researches about Parallel GAs are implemented as; Population is devided into some subpopulations, each subpopulation executes GA independently and some individuals are migrated in fixed intervals or fixed probability. On the other hand, Grid Computing has been noticed and a research that implements Parallel GA by using Master-Worker model on Grid Computing has been reported. However, on the huge search space problems, Parallel GA by using Master-Worker model needs a lot of worker to get better solution quality. If there are a lot of workers, the traffic loads to the master.
    In this paper, we propose Asynchronous Parallel Distributed GA by using Layered Server-Client model. This model is based on Elite Migration on Server-Client model we proposed before. In this model, an Elite Server manages some Subpopulation Clients, and a Master Server manages some Elite Servers. From this structure, the number of Subpopulation Clients that a Elite Server manages is able to be reduced and the traffic on an Elite Server is also able to be reduced. To evaluate our proposed model, we apply to some problems. As the results, we confirm that the fitness is as well as that of current methods and the traffic is less than that of current methods. We also confirm that the migration time is able to be reduced especially in large search space problems.
  • Identification of Hammerstein Systems using Trigonometric Polynomials

    pp. 13-20

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up

    DOI:10.5687/iscie.22.13

    This paper studies a procedure for identifying Hammerstein systems from input-output data, where the static nonlinearity is approximated by the trigonometric polynomials. Signals generated by the trigonometric function with white Gaussian inputs are analyzed in terms of the persistent excitation of linear time-invariant systems. Based on the analysis, an identification algorithm for Hammerstein systems is proposed via a subspace identification method. Numerical simulation results are also included to illustrate the effectiveness of the present algorithm.
  • A Novel Clustering Method Curbing the Number of States in Reinforcement Learning

    pp. 21-28

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up

    DOI:10.5687/iscie.22.21

    We propose an efficient state-space construction method for a reinforcement learning. Our method controls the number of categories with improving the clustering method of Fuzzy ART which is an autonomous state-space construction method. The proposed method represents weight vector as the mean value of input vectors in order to curb the number of new categories and eliminates categories whose state values are low to curb the total number of categories. As the state value is updated, the size of category becomes small to learn policy strictly. We verified the effectiveness of the proposed method with simulations of a reaching problem for a two-link robot arm. We confirmed that the number of categories was reduced and the agent achieved the complex task quickly.
  • Control System Synthesis Based on Balance between Normal-Case Performance, Safety and Fault-Case Performance

    pp. 29-36

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up

    DOI:10.5687/iscie.22.29

    This paper presents control system synthesis of providing a balance between normal-case performance, safety and fault-case performance according to the international standard on safety, IEC 61508. It is based on multiobjective design for simultaneous problems for each context to optimize only normal-case performance out of the whole including fault-case performance.
  • Online Writer Verification Using Feature Parameters Basedonthe Document Examiners' Knowledge

    pp. 37-47

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up

    DOI:10.5687/iscie.22.37

    This paper investigates writer verification using feature parameters based on the knowledge of document examiners, which are automatically extracted from handwritten kanji characters on a digitizing tablet. Criteria of feature selection using the evaluation measure that is obtained by modifying the measure of decidability, d-prime, is established and the criteria are applied to the evaluation measures that are calculated from learning samples. Then two classifiers based on the frequency distribution of deviations of the selected features are proposed and its design method using learning samples is showed. The effectiveness of the proposed method is evaluated by verification experiments with the database including skilled forgeries. The experimental results show that the proposed methods are effective in writer verification.

Article Access Ranking

05 Dec. (Last 30 Days)

  1. Structural and Mechanical Characterizations of Top Dross in a Molten Zinc Bath ISIJ International Advance Publication
  2. Perspective toward Long-term Global Goal for Carbon Dioxide Mitigation in Steel Industry Tetsu-to-Hagané Vol.105(2019), No.6
  3. Determination of Facet Plane and Cleavage Fracture Plane of the Top Dross Formed in a Molten Zinc Bath ISIJ International Advance Publication
  4. Effect of Hydrogen Concentration in Reducing Gas on the Changes in Mineral Phases during Reduction of Iron Ore Sinter ISIJ International Advance Publication
  5. Identification of Cracking Issues and Process Improvements through Plant Monitoring and Numerical Modelling of Secondary Cooling during Continuous Casting of HSLA Steels ISIJ International Advance Publication
  6. Effect of Microstructure at Coating Layer on Fatigue Strength in Hot-Dip Galvanized Steel ISIJ International Vol.60(2020), No.11
  7. Contributions of Grain Size and Crystal Orientation to Fatigue Crack Deflection and Branching Behavior in Low Carbon Steel Plates ISIJ International Advance Publication
  8. Crystal Structure Analysis of Top Dross in Molten Zinc Bath by First Principles Calculation and Synchrotron X-ray Diffraction ISIJ International Advance Publication
  9. Effects of Residual Stress on Hydrogen Embrittlement of a Stretch-Formed Tempered Martensitic Steel Sheet ISIJ International Advance Publication
  10. Volumetric Strain Dependence of Quantum Diffusion of Hydrogen in bcc Iron ISIJ International Advance Publication

Search Phrase Ranking

05 Dec. (Last 30 Days)

  1. blast furnace
  2. blast furnace permeability
  3. blast furnace productivity
  4. bearing 52100 100cr6 rolling contact fatigue
  5. journal of high pressure institute of japan
  6. toshihiro kitamura
  7. dwtt pressed notch
  8. electromagnetic stirring
  9. fatigue crack path prediction in udimet 720 nickel-based alloy single crystals
  10. induction heating