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. 19 (2006), No. 2

  • Evolutionary Dynamics Analysis of GAs for Problems with Neutrality by the Nei's Standard Genetic Distance

    pp. 43-50

    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.19.43

    Neutrality, which is caused by highly redundant mappings from genotype to phenotype or from phenotype to fitness, has been recognized as an important factor for artificial genetic search. However, this research field has still been trying to overcome the difficulties of analyzing evolutionary dynamics at the level of phenotype space or fitness space for about ten years. On the other hand, considering that population genetics explains the change of gene frequency in a population, that is, dynamics at the level of genotype space, we expect that various techniques developed in population genetics might be useful for analyzing dynamics of artificial evolution. In this paper, we apply the Nei's standard genetic distance to artificial evolution. Several computer simulations are systematically conducted by applying a standard genetic algorithm to a tunably neutral NK landscape in order to clarify the characteristics of the Nei's standard genetic distance in genetic algorithms. The results prove several consistencies with the (nearly) neutral theory of molecular evolution.
  • An Approach to Topology and Weight Evolving Artificial Neural Networks and the Validation with the Double Pole Balancing Problems

    pp. 51-58

    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.19.51

    A novel approach to Topology and Weight Evolving Artificial Neural Networks (TWEANN) is presented. This comes from the following two considerations. (1) Artificial evolution is designed without recombination which mostly generates an offspring whose fitness value is considerably reduced than those of parents. Instead of recombination, two types of topological mutations are provided as genetic operations. One is for inserting a new neuron and the other is for generating a new synaptic connection. The both of them are designed carefully to retain the current evaluation value. (2) A new encoding technique such that a string is defined as a set of substrings called operons is introduced. This is based on our idea that each potential function should be encoded into a different part of genetic information. In order to validate our approach, computer simulations are conducted by using one of the standard reinforcement learning problems called the double pole balancing problems without velocity information. The results obtained are compared with the results by NEAT, which is recognized as one of the most powerful techniques in this problem domain. It is found that our proposed approach yields competitive results, especially when the problem is tuned to be difficult.
  • Local Policy-sharing Systems for Multi-agent Reinforcement Learning

    pp. 59-68

    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.19.59

    Multi-agent reinforcement learning features many problems, one of these being state-space explosion based on combinations of policies that each agent has. Generally, if agents can share their policies, they can effectively search their enormous state space; that, however, simultaneously produces a risk of local optimality. Hence we propose a novel policy-sharing system based on the Learning Classifier System, on which agents locally share their policies. The aim of this system is to decrease the probability of falls into local optimality, and to effectively reduce state space by policy sharing. To verify the above, we use simplified soccer, which has discrete space and time.
  • A Hybrid-Metaheuristic Approach for Optimal Design of Total Supply Chain Network

    pp. 69-77

    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.19.69

    We consider, in this paper, the capacitated multi-level facility location problem as a supply-chain network design. To cope with such large-scale and complicated problems, we have presented a practical method that divides first the original problem into two sub-problems, and then combine each result consistently. Each sub-problem, i.e., distribution side sub-problem and procurement one is solved likely by a hybrid method that employs meta-heuristic method like tabu search and graph algorithm for solving a transformed minimum cost flow problem in a hierarchical manner. Moreover, we have given a practical adjusting method for thus separately solved solutions associated with the Lagrangian relaxation. Through numerical experiments, we have confirmed that the proposed method can outperform a popular commercial software. On the average, the approximated rate of the obtained results was within 1.006 compared with the final solution from the commercial software.
  • An LMI Condition for Asymptotic Stability of a Discrete-Time System based on Quadratic Difference Forms

    pp. 78-80

    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.19.78

  • Efficient Randomized Algorithms for Robust Feasibility Problems

    pp. 81-83

    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.19.81

  • Consideration on Stimulational Queen Ant Strategy in Ant Colony Optimization

    pp. 84-86

    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.19.84

Article Access Ranking

04 Mar. (Last 30 Days)

  1. Perspective toward Long-term Global Goal for Carbon Dioxide Mitigation in Steel Industry Tetsu-to-Hagané Vol.105(2019), No.6
  2. Recovery of Phosphorus from Modified Steelmaking Slag with High P2O5 Content via Leaching and Precipitation Tetsu-to-Hagané Vol.107(2021), No.2
  3. Effect of Varied Oxygen Levels on the Oxidation of a Magnetite Pellet Bed during Pot Furnace Induration ISIJ International Advance Publication
  4. Time-resolved and in-situ Observation of Semisolid Deformation in Al–Cu Alloys with Equiaxed and Columnar Grain Structures by Using a Combination Technique of 4D-CT and 3DXRD ISIJ International Advance Publication
  5. Deformation-induced Martensite Transformation Behavior during Tensile and Compressive Deformation in Low-alloy TRIP Steel Sheets ISIJ International Vol.61(2021), No.2
  6. Improvement of Bragg-edge Neutron Transmission Imaging for Evaluating the Crystalline Phase Volume Fraction in Steel Composed of Ferrite and Austenite ISIJ International Advance Publication
  7. Effects of Sintering Temperature History and Al2O3 Concentration on Formation of Acicular SFCA with Fine Pores Tetsu-to-Hagané Advance Publication
  8. Effect of Initial Austenite Grain Size on Microstructure Development and Mechanical Properties in a Medium-carbon Steel Treated with One-step Quenching and Partitioning ISIJ International Vol.61(2021), No.2
  9. Influence of Isothermal Treatment Prior to Initial Quenching of Q&P Process on Microstructure and Mechanical Properties of Medium Mn Steel ISIJ International Vol.61(2021), No.2
  10. Selective Separation of Metallic Fe Remaining in Slags Using Electrical Pulse Disintegration ISIJ International Advance Publication

Search Phrase Ranking

04 Mar. (Last 30 Days)

  1. blast furnace
  2. blast furnace permeability
  3. blast furnace coal tar injection
  4. blast furnace productivity
  5. 西山記念技術講座
  6. a practical approach to enhance wear resistance of bearings in molten zinc
  7. bearing steel refining
  8. development of sanyo ultra refining process
  9. isij
  10. isij international