Time filter

Source Type

Abiko, Japan

Chuō Gakuin University is a private university in Abiko, Chiba, Japan, established in 1966. The predecessor of the school was founded in 1904. Wikipedia.

Tamura K.,Chuo Gakuin University
SCIS and ISIS 2010 - Joint 5th International Conference on Soft Computing and Intelligent Systems and 11th International Symposium on Advanced Intelligent Systems | Year: 2010

Genetic Algorithms (GAs) are the probabilistic search technique that derived from evolution of living things. Many GAs are inspired by Darwin's theory of evolution, but there are many hypotheses in the theory of evolution, and there is the virus theory of evolution in one of them. Virus Evolutionary Genetic Algorithm (VE-GA) is the technique that is based on virus theory of evolution. VE-GA is performed a global search and a local search by co-evolution of two kinds of populations. On the other hand, in late years Estimation of Distribution Algorithm (EDA) is studied actively. It is a technique to generate offspring individual using a joint probability distribution of each locus. The advantage of EDA is that destruction of the effective gene doesn't happen by genetic operations such as crossover and mutation. However, in general EDA, there is no mechanism that searches for the local solution. So it proposed an Estimation of Distribution Algorithm by partial solution in co-evolution. In the proposal method, partial solutions are generated by estimated value and search local solution by co-evolution using two kinds of populations. However, the consideration how it functioned was insufficient. We report that apply to several optimization problems and consider the factor that works effectively.

Tan Y.,Chuo Gakuin University | Miwa K.,Nagoya Gakuin University | Chinbat U.,National University of Mongolia | Takakuwa S.,Nagoya University
Proceedings - Winter Simulation Conference | Year: 2012

Open pit copper mining plants usually comprise two major components, the open pit mining operation and the copper ore enrichment plant. An open pit copper mine is an excavation or graze made into the surface of the ground for the purpose of extracting ore. A series of data obtained by a transportation control system with GPS (Global Positioning System) technology is utilized to perform the simulation. Operations in the mine are based on a mining plan and must be optimized because the transportation costs are expensive. In this paper, procedures are proposed to obtain an optimized number of trucks and to estimate the maximum mining capacity at an open copper pit. Then, the creation of a truck dispatching control table for meeting the maximum mining capacity is demonstrated by performing a simulation. © 2012 IEEE.

Tamura K.,Chuo Gakuin University | Torii T.,Sugiyama Jogakuen University
IEEJ Transactions on Electronics, Information and Systems | Year: 2015

Interactive Evolutionary Computation is applied to generate art design such as CG, music, fashion and so on. However, it has a problem to replace individuals by the user, so the system has to generate good quality individuals to relieve the user's burden. In this paper, we introduced Aesthetic Measure in Interactive Grammatical Evolution. It is used as a fitness to replace individuals. And our method shows a result to generate favorite beautiful design for users. © 2015 The Institute of Electrical Engineers of Japan.

To estimate the volume fraction of martensite induced in austenitic stainless steel during tensile deformation, the resistivity of a specimen was measured at a temperature of 77, 187 or 293K. Since the distribution of the martensite in the specimen was observed in the specimen having the small slenderness ratio. Accordingly, the specimen having the large slenderness ratio was used to estimate the martensite volume by the resistivity. The negative resistivity region was observed on the resistivity-plastic strain curve regardless of the specimen temperature. It was suggested that the negative resistivity was caused by the formation of ε martensite that is a precursor of the martensite and the process of the resistivity was controlled by the formations of the ε martensite and the microscopic plastic deformation induced by the martensite. The linear relation between the resistivity and the volume fraction of the martensite was confirmed by the experiment and a simple model. It was clarified that the resistivity could be used as an index of estimating the deformation-induced martensite in austenitic stainless steel. © 2011 The Society of Materials Science, Japan.

Tamura K.,Chuo Gakuin University | Torii T.,Sugiyama Jogakuen University
Journal of Advanced Computational Intelligence and Intelligent Informatics | Year: 2013

These days, artificial intelligence (AI) has been used in game AI. Additionally, video game AI is studied actively in late years, for example, application of commercial game or competition etc. In many video games of recent years, real-time action and non-player characters have been required to attract players. This paper describes how to develop a ghost team controller using evolutionary system to play the video game, Ms Pac-Man. Ms Pac-Man has been used as a testbed of AI, especially multi-agent system. We propose a method to generate the ghost team controller with Grammatical Evolution. In case of developingMs Pacman agent with Evolutionary Computation using fitness function, the criterion of the fitness is used its obtained high score in many cases. In contrast, ghost team has to prevent Ms Pac-man to get high score, namely hold score in check. However, if Ms Pacman is captured in low score by accident, its ghost strategy have a possibility to survive next generation, and if the ghosts pursue Ms Pac-man in a line, agent isn't captured for all time. Therefore developing ghost team agent is required to avoid these issues, and we introduced a penalty to the fitness, grammar like instinct and to attack Ms Pac-Man on both sides. This paper introduces experimental data about the ghost team controller forMs Pac-Man versus ghost team, we used ghost team agents and tested them Ms Pac-Man agents. The experimental results showed that proposed system could catchMs Pac-Man agent compare with simple hand-coded ghost teams, and the evolved controller we made worked effectively. These results are concluded that proposed method works effectively for generating ghost controller.

Discover hidden collaborations