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. 18 (2005), No. 12

  • Proposal of a Multi-objective Genetic Algorithm for Noisy Fitness Functions

    pp. 423-432

    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.18.423

    In this paper, genetic algorithms for multi-objective optimization problems with uncertainty, which attract attention for applications to simulation-based and experiment-based optimization of real systems, are discussed. First, difficulties faced by conventional multi-objective GAs in their application to multi-objective optimization of noisy fitness functions are described. Second, to cope with these problems, a multi-objective GA that has a fitness estimation method and a new selection operator is proposed. The effectiveness of the proposed method is demonstrated by numerical simulations and real-world experiments.
  • Reinforcement Learning of Optimal Supervisor Based on Language Measure

    pp. 433-439

    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.18.433

    Recently, Wang and Ray introduced a signed measure for formal languages, called a language measure, to evaluate performance of strings generated by discrete event systems and a synthesis method of an optimal supervisor based on the language measure has been studied. In order to apply the method, exact information about a language measure of a controlled discrete event system is needed. From the practical point of view, it is not always possible to know the information a priori.
    In such a situation, a learning-based approach is useful to obtain an optimal supervisor with respect to the language measure. This paper considers a synthesis method of an optimal supervisor with respect to a language measure. First, we clarify the relationship between the Bellman equation in reinforcement learning and performance of the language generated by the controlled discrete event systems. Next, using the relationship, we propose a learning method of the optimal supervisor where costs of disabling events are taken into consideration. Finally, by computer simulation, we illustrate an efficiency of the proposed method.
  • Symbol Emergence through Interaction with Environment

    pp. 440-449

    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.18.440

    This paper discusses a relationship between symbol emergence and embodiment. Symbol emergence is an alternative approach to overcome symbol grounding problem. We believe human beings' symbols constructed and held internally are originally based on our own embodiment. Therefore, autonomous social robots will also have to construct their own symbols by themselves. In addition to this, we have a nonlinear hypothesis about symbol emergence. To realize symbol emergence inside of autonomous robots, we propose Dual-Schemata model. This model enables an autonomous robot to generate its own symbols, called perceptional schemata, depending on its embodiment. In the end, we show that this symbol emergence has a nonlinear relationship with embodiment.
  • Dynamically Separating Design Method for Complex System including Chaos

    pp. 450-457

    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.18.450

    In this paper we discuss a system design method that involves the dynamic separation of interaction. Multi-agent systems, which model the ubiquitous computing environment where elements behave autonomously, are used as the experimental platform to compare the proposed method with traditional ones. The results show the effectiveness of this design method for systems including chaos.
  • Expressway Traffic Simulation Using Hierarchical Autonomous Decentralized Model

    pp. 458-466

    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.18.458

    Recently, as performance of computers improves, it is possible to simulate larger-scale and more detailed traffic flows. In this paper, a road traffic system is modeled as a hierarchical autonomous decentralized system by constructing three kinds of the model which correspond to roads, vehicles and drivers respectively. By modeling the vehicles and drivers separately, it is possible to consider independently a physical dynamics of the system and issues related to information and decision makings. By comparing the results of simulation using the proposed model with those obtained by the Underwood model, the validity of the proposed model has been confirmed. Moreover, the typical phenomenon in actual traffic flows in sag has been also observed in the simulation. Finally, as an example of the utilization of the simulation model, the effects of the introduction of speed limit on traffic flows have been examined.

Article Access Ranking

16 Jan. (Last 30 Days)

  1. In-Situ Observation Experimental Study on the Agglomeration and Dispersion of Particles at the Interface of High-temperature Melts 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. In situ Observation of Reduction Behavior of Multicomponent Calcium Ferrites by XRD and XAFS Tetsu-to-Hagané Advance Publication
  4. Preface to the Diamond Jubilee Issue on “Selected Topics in Iron and Steel and Their Processing toward the New Steel Age” ISIJ International Vol.60(2020), No.12
  5. Development and Prospects of Refining Techniques in Steelmaking Process ISIJ International Vol.60(2020), No.12
  6. Transformation from Ferrite to Austenite during/after Solidification in Peritectic Steel Systems: an X-ray Imaging Study ISIJ International Vol.60(2020), No.12
  7. Effects of Residual Stress on Hydrogen Embrittlement of a Stretch-Formed Tempered Martensitic Steel Sheet ISIJ International Advance Publication
  8. Numerical Approach to Comprehend for Effect of Melts Physical Properties on Iron-slag Separation Behaviour in Self-reducing Pellet ISIJ International Vol.60(2020), No.12
  9. Improved Hydrogen Embrittlement Resistance of Steel by Shot Peening and Subsequent Low-temperature Annealing ISIJ International Advance Publication
  10. Editors’ Postscript ISIJ International Vol.60(2020), No.12

Search Phrase Ranking

16 Jan. (Last 30 Days)

  1. blast furnace
  2. 西山記念技術講座
  3. blast furnace permeability
  4. blast furnace productivity
  5. j. f. elliott
  6. blast furnace burden distribution
  7. bottom dross
  8. carbon-containing pellet
  9. cog blast furnace injection
  10. cr2o3 al2o3