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Congress on Evolutionary Computation

作者： Yukiko Orito Shota Sugizaki Hisashi Yamamoto Yasuhiro Tsujimura Yasushi Kambayashi Graduate School of Social Sciences Hiroshima University Higashihiroshima Hiroshima Japan Graduate School of System Design Tokyo Metropolitan University Hino Tokyo Japan Department of Computer and Information Engineering Nippon Institute of Technology Saitama Japan

The portfolio optimization/rebalancing problem is to determine a proportion-weighted combination in a portfolio in order to achieve certain investment targets. For this problem, many researchers have used various evolutionary methods and models such as genetic algorithms and simulated annealing. On the other hand, the portfolio optimization/rebalancing problem can be viewed as a multi-dimensional problem because its solution is a proportion-weighted combination for the given assets. The previous works, however, have not taken into account the multi-dimensional aspect of the problem. In order to approach this problem from the multi-dimensional aspect, we propose a model based on the probabilistic model-building genetic algorithm with narrower width histograms (PMBGA-NWH), and then apply it to optimize the constrained index funds with the given rebalancing cost in this paper. In the numerical experiments, we show that our model has better ability to make optimal index funds than the traditional genetic algorithm (GA).

关键词： Indexes Portfolios Probabilistic logic Correlation Optimization Histograms Numerical models

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The generation of transport networks based on DLA model in an artificial society model with characteristics of geographical systems

The generation of transport networks based on DLA model in a...

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International Conference on computer and Automation engineering, ICCAE

作者： Lihu Pan Heqing Huang School of Computer Taiyuan University of Science and Technology Taiyuan China State Key Laboratory of Resources and Environmental Information System Institute of Geographic Sciences and Natural Resources Research Chinese Academy and Sciences Beijing China Chinese Academy of Sciences China

ISBN: (纸本)9781424455850

The artificial society modeling approach for studying the behavior of complex systems has gained wide applications in recent years. The integration of this approach with geographical theories provides an inter-disciplinary approach to the study of complex human-nature interactions. By deploying widely applied RePast and Eclipse as basic tools, this study develops an artificial society model that is able to capture the characteristics of geographical systems. Consequently, DLA (diffusion limited aggregation) algorithms are applied to generate and record each agent's pathway. The simulated results demonstrate that the transportation networks produced with DLA algorithms have a spatial pattern very similar to the form of urban areas exhibited in real world.

关键词： Character generation Power system modeling Environmental economics Java Software libraries Open source software information systems Computational modeling Urban areas Digital elevation models

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Robustify a job-shop schedule according to the payload of the machine

Robustify a job-shop schedule according to the payload of th...

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International Conference on Services systems and Services Management, ICSSSM

作者： Zhiyang You Zhigang Sun Xibin Zhao Daxin Zang Department of Computer Science and Technology Tsinghua University Beijing China School of Software Tsinghua University Beijing China Key Laboratory of Information System Security Ministry of Education School of Software Tsinghua University Beijing China Software Engineering Institute Beijing Aeronautics and Astronautics University Beijing China

Robust scheduling is an effective way to solve job-shop scheduling problem (JSP) under a dynamic and stochastic environment with uncertainties, which may lead to numerous schedule disruptions. Maintaining the optimization obtained, the robust schedule is more stable in execution. The vast majority of the researches on robust scheduling concentrate on the development of the robustness and stabilization with an optimization target that minimizes makespan. However, other optimization targets are needed in reality, and in this paper, we introduce another optimization target that maximizes the payload of the machine, which can reflect the capacity of machine. This work applies a two-step way to achieve a robust schedule. A baseline schedule in the deterministic environment is generated first, which pursues standard optimization criterions, and then the temporal buffers are inserted into the baseline schedule which make the schedule absorb some level of unexpected disruption without rescheduling. According to the payload of each machine which should be close to the maximum at any time in execution, we can get each size of the temporal buffers inserted into the different operations. An extensive experiment is used to show the relative performance of the proposed robust schedule. It is shown that the schedule is robust and stable under the stochastic disturbance coupling with minimal makespan tardiness and symmetry payload.

关键词： Robustness Payloads Job shop scheduling Uncertainty Processor scheduling Dynamic scheduling Stochastic processes Switches computer science Space technology

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Co-optimization of Dynamic/Static Test PoWer in Scan Test

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电子学报(英文版) 2009年第1期18卷 54-58页

作者： WANG Wei HAN Yinhe LI Xiaowei FANG Fang School of Computer and Information Hefei University of Technology Hefei 230009 China Key Laboratory of Computer System and Architecture Institute of Computing Technology Chinese Academy of Sciences Beijing 100080 China School of Management Hefei University of Technology Hefei 230009 China

Low-power design has become a challenge of test. We propose an effective low-power scan architecture named PowerSluice to minimize power consumption during scan test, which is based on scan chain modifications. On one hand, a kind of blocking logic is inserted into the scan chain to reduce the dynamic power and two kinds of controlling units are also inserted to decrease the leakage power during the shift cycle. On the other hand, using genetic algorithm, the exact values of control signals are found out to control the process. Experiments results indicate that this architecture can effectually reduce power during scan test with probably minimum area cost.

关键词：低功耗设计扫描测试静态测试动态优化合作控制单元电力消耗动态功耗

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Double protection charger for Li-Ion battery

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World Electric Vehicle Journal 2010年第2期4卷 379-385页

作者： Lu, Shuh-Tai Chen, Ren-Her Sie, Wun-Tong Liu, Kuen-Chi Computer Science and Information Engineering Ching Yun University No. 229 Jiansing Rd. Jhongli City Taoyuan County32097 Taiwan Chung-Shan Institute of Science and Technology Electronic Systems Research Division P.O. Box 90008-22-17 Lung-Tan Taoyuan County32599 Taiwan Chung-Shan Institute of Science and Technology System Development Center No. 566 Lane 134 Longyuan Rd. Lung-Tan Taoyuan County325 Taiwan

A low cost battery charger is introduced in this paper. The charging feature meets the requirement of a Li-Ion rechargeable cell designed for electric vehicles and manufactured by E company. The charger is capable of constant current/constant voltage charging strategy, double over current/voltage protection and automatically offloaded with a sound alarm when the charging current is smaller than about 40mA. A detail circuit diagram and its operation principle are proposed and some experimental results are also given. All devices used in the charger circuit are very common and easily purchased. Because of its simple structure only a few modifications are needed to make one's own specific charger. © 2010 WEVA.

关键词： Charging (batteries)

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Adaptability infrastructure for bridging IT security evaluation and options theory 09

Adaptability infrastructure for bridging IT security evaluat...

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2nd International Conference on Security of information and Networks, SIN'09

作者： Abbas, Haider Yngström, Louise Hemani, Ahmed Department of Electronic Computer and Software Systems School of Information and Communication Technology Royal Institute of Technology Sweden Department of Computer and System Sciences Stockholm University Sweden

ISBN: (纸本)9781605584126

The constantly rising threats in IT infrastructure raise many concerns for an organization, altering security requirements according to dynamically changing environment, need of midcourse decision management and deliberate evaluation of security measures are most striking. Common Criteria for IT security evaluation has long been considered to be victimized by uncertain IT infrastructure and considered resource hungry, complex and time consuming process. Considering this aspect we have continued our research quest for analyzing the opportunities to empower IT security evaluation process using Real Options thinking. The focus of our research is not only the applicability of real options analysis in IT security evaluation but also observing its implications in various domains including IT security investments and risk management. We find it motivating and worth doing to use an established method from corporate finance i.e. real options and utilize its rule of thumb technique as a road map to counter uncertainty issues for evaluation of IT products. We believe employing options theory in security evaluation will provide the intended benefits. i.e. i) manage dynamically changing security requirements ii) accelerating evaluation process iii) midcourse decision management. Having all the capabilities of effective uncertainty management, options theory follows work procedures based on mathematical calculations quite different from information security work processes. In this paper, we will address the diversities between the work processes of security evaluation and real options analysis. We present an adaptability infrastructure to bridge the gap and make them coherent with each other. This liaison will transform real options concepts into a compatible mode that provides grounds to target IT security evaluation and common criteria issues. We will address ESAM1 system as an example for illustrations and applicability of the concepts. Copyright 2009 ACM.

关键词： Risk management

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A novel method to implement an interactive mobile robot

A novel method to implement an interactive mobile robot

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IEEE International Conference on Advanced Robotics and its Social Impacts

作者： Lee, Wen-Yo Guo, Jhu-Syuan Pao, Chan-An Hung, Ta-Chih Computer Information and Network Engineering Lunghwa University of Science and Technology Taoyuan Taiwan Mechanical and System Research Laboratory Industrial Technology Research Institute Hsinchu Taiwan

ISBN: (纸本)9781424443949

This paper presents a novel method to implement an interactive mobile robot. The proposed mobile robot is implemented under the technique of mixed reality. The mixed reality technique is realized by both the Virtools tool and mobile robot. There are three basic interactive behaviors of human beings have been implemented on this proposed mobile robot. There are target navigation behavior, face tracking behavior, and obstacle avoidance behavior;the three behaviors are designed by the fuzzy rules method, respectively. These behaviors lead to the proposed path planning strategy possibly. On the other hand, a novel path planning strategy for a mobile robot is given in this paper. The path planning strategy is according to the experience that the mobile robot has been experienced in target navigation. Experiments show that the proposed behaviors are well designed. With the basic ability of the behaviors, the proposed robot can automatically learn from the previous navigation experience and can optimize the path planning. © 2009 IEEE.

关键词： Mobile robots

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ERRATUM: 'ADDENDUM TO "SPREAD OF EPIDEMIC ON COMPLEX NETWORKS UNDER VOLUNTARY VACCINATION MECHANISM"'

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International Journal of Modern Physics C 2010年第10期21卷 1309-1309页

作者： SHENGJUN XUE FENG RUAN CHUANYANG YIN HAIFENG ZHANG BINGHONG WANG Department of Computer Science and Technology Nanjing University of Information Science and Technology Nanjing Jiangsu 210093 China Institute of System Analysis and Integration Nanjing University of Information Science and Technology Nanjing Jiangsu 210093 China Department of Modern Physics University of Science and Technology of China Hefei Anhui 230026 P. R. China

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Modified differential evolution for hard constrained optimization

Modified differential evolution for hard constrained optimiz...

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2009 International Conference on Computational Intelligence and Software engineering, CiSE 2009

作者： Deng, Changshou Zhao, Bingyan Deng, Anyuan Liang, Changyong School of Information Science and Technology Jiujiang University Jiujiang City Jiangxi Province China Institute of Computer Network System Hefei University of Technology Hefei City Anhui Province China

ISBN: (纸本)9781424445073

Hard constrained optimization problems in science and engineering are common computationally very expensive. This leads to serious impediment to the successful application of evolutionary optimization techniques. A modified Differential Evolution with hybrid mutation and new selection rules was proposed to solve the hard constrained optimization problem. The hybrid mutation is the linear combination of two different traditional mutations schemes using simulated annealing way. The new selection rule can handle the constraints directly without choosing the penalty factors difficultly. The simulation results on the Bump function show it is effective and robust way for solving the hard constrained optimization. ©2009 IEEE.

关键词： Constrained optimization

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Model of the photovoltaic system

Model of the photovoltaic system

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作者： Lee, Wonho Jeon, Chunkee Seo, Jongwan Hwang, Chijung Dept. of Computer Information System Kyonggi Institute of Technology Korea Republic of Dept. of Mechatronics Kyonggi Institute of Technology Korea Republic of School of Information and Computer Engineering Sungkyunkwan University Korea Republic of Dept. of Computer Science and Engineering Sungkyunkwan University Korea Republic of

ISBN: (纸本)9789604741137

By the reason of some renewable energy sources not controlled by human begins but natural environment. Especially, wind power and PV generation controlled by the nature, and therefore PV or wind power is difficult to estimate the output. It is useless for engineering system that the system has lower controllability and cannot estimate the operation. The natural energy sources are not control and difficult of estimation. In this paper represents the PV system output model. PV system output models are two types. One is monthly model, and the other is daily model. These model uses sunlight time and angle of the sun and PV cells. To verify these model, apply the 10 kW PV system and compare estimate output with real generation.

关键词： Wind power

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