基于黄金分割律选择算子的改进进化编程算法及其在机器人路径规划中的应用

通过分析及结合机器人路径规划的进化编程仿真实验指出,保存最优个体或淘汰最差个体都会引起进化算法早熟现象,并提出如下改进算法按适应度从高(优)到低,依黄金分割律分别取出优秀和最差部分个体(染色体),通过赌轮法,并按适者生存原则从优秀的部分中选择一个体直接进入子代,而按劣者淘汰原则从最差部分中选择一个体从子代中排除.将改进算法运用于机器人路径规划,通过仿真实验检验了算法的有效性.     

类典型理论视角下的色彩语码研究——英汉语中"红色"文化含义探析

本文试图通过类典型理论分析红色这一基本颜色词语在英汉语中文化含义的典型特征和变化维度,证实色彩语码研究中文化相对论和自然进化论具有互补性和互动性。     

Design of intelligent network performance analysis & forecast support system

A system designed for supporting the network performance analysis and forecast effort is presented, based on the combination of offline network analysis and online real-time performance forecast. The off-line analysis will perform analysis of specific network node performance, correlation analysis of relative network nodes performance and evolutionary mathematical modeling of long-term network performance measurements. The online real-time network performance forecast will be based on one so-called hybrid prediction modeling approach for short-term network, performance prediction and trend analysis. Based on the module design, the system proposed has good intelligence, scalability and self-adaptability, which will offer highly effective network performance analysis and forecast tools for network managers, and is one ideal support platform for network performance analysis and forecast effort. Foundation item: Supported by the National 863 High-Tech Project (863-300-02-09-99) and Key Research Project of Hubei Province (991P110) Biography: Wang Zhi(1977-), male, Master candidate, research direction, intelligent network management and performance evaluation.     

Analysis of the diversity of population and convergence of genetic algorithms based on Negentropy

1.INTRODUCTION Thediversityandconvergenceofgeneticalgorithms havegainedmoreattentionbymanyspecialistsinre centyears,althoughGAhasbeenwidelyusedin manyfieldsandobtainedsomesuccess,therestill isn’tasetofcompletetheorytoexplaintheprinciple ofGA,tosomeextent,itsdevelopmentisrestricted, evenmakingsomeonedoubtfulaboutit. Holland’smodeltheoremisthemaintheoryof GA,butitjustdisclosestheaveragechangeinthe evolutionarypopulation,notsuggestinganyinforma tionofindividualdistributionwithintheevo…     

动态调整进化方向与策略的果蝇优化算法

针对标准果蝇优化算法(FOA)收敛速度慢、容易陷入局部最优和寻优精度低等缺陷,提出了动态调整进化方向与策略的果蝇优化算法(FOADAEDS)。首先,种群初始位置由佳点集理论选取;其次,根据种群进化信息动态调整进化指导方向和搜索步长;最后,当算法陷入早熟时,改变搜索策略以跳出局部最优。对6个经典测试函数进行仿真运算,结果表明,本文提出的改进算法相比标准果蝇优化算法和其他几种改进算法,有较好的寻优精度和收敛速度。     

论港口-腹地经济的一体化问题

“港口-腹地”区域实质上是一个具有内在必然联系的特殊的经济地域系统,其运动发展的具体实践从客观上要求港口与腹地应有高度的协同性、整合度和一体化．在经济全球化和对外开放已经成为区域经济发展重要前提的今天,这种要求就显得格外突出和迫切．相关的具体实践需要有相应的基本理论为指导,否则就会成为非理性或低效性甚至是负效应的盲目实践．为此,对港口-腹地区域经济一体化有关理论问题的分析探讨就有着重要的理论意义和实践指导意义,该文探讨了港口-腹地区域经济一体化的理论依据、动力机制以及港口-腹地经济地域系统运动发展的一般演化规律等基本理论问题．     

遗传算法综述

遗传算法是一种自适应全局优化概率搜索算法,在各种科学工程领域得到了广泛的应用,文章介绍了遗传算法的发展历程、理论研究和应用研究状况.     

简单巨系统研究及其系统动力学分析

研究大量简单个体依照一定规则相互作用而在宏观上表现出群体智能特性可以用于解决一些复杂的问题。通过对一个实际问题—研究生楼问题的观察和分析,研究了单个个体的行为对整个系统带来的影响。在此基础上,提出了相应的数学模型,并进行了分析,得出了几点有价值的结论。     

进化机器人学研究的若干问题

在回顾机器人学发展和进化历程的基础上 ,探讨了进化机器人学的基本思想、控制结构、主要研究方法和成果 ,总结了进化方法的特点 ,最后展望了进化机器人的发展趋势 .     

A new method of research on molecular evolution of proteinase superfamily

The molecular evolutionary tree, also known as a phylogenetic tree, of the serine proteinase superfamily was constructed by means of structural alignment. Three-dimensional structures of proteins were aligned by the SSAP program of Orengo and Taylor to obtain evolutionary distances. The resulting evolutionary tree provides a topology graph that can reflect the evolution of structure and function of homology proteinase. Moreover, study on evolution of the serine proteinase superfamily can lead to better understanding of the relationship and evolutionary difference among proteins of the superfamily, and is of significance to protein engineering, molecular design and protein structure prediction. Structure alignment is one of the useful methods of research on molecular evolution of protein.