基于混沌搜索的粒子群优化算法

粒子群优化算法(PSO)是一种有效的随机全局优化技术。文章把混沌优化搜索技术引入到PSO算法中,提出了基于混沌搜索的粒子群优化算法。该算法保持了PSO算法结构简单的特点,改善了PSO算法的全局寻优能力,提高的算法的收敛速度和计算精度。仿真计算表明,该算法的性能优于基本PSO算法。     

动态邻域混合粒子群优化算法

粒子群优化(PSO)算法对于多峰搜索问题一直存在早熟收敛问题。为在增强PSO算法全局搜索能力的同时提高收敛速度,提出一种动态邻域混合粒子群优化算法DNH_PSO,采用PSO局部模型,将随机拓扑和冯诺依曼拓扑相结合形成动态邻域,提高算法的全局搜索能力,为增强算法的局部搜索能力并加快收敛速度,使用粒子邻域全面学习策略,将拟牛顿法引入算法中。与其他PSO实验对比分析表明,该算法对于多峰搜索问题具有较好的全局收敛性。     

具有自适应邻域探测机制的改进型PSO算法

针对基本PSO算法在全局优化中易陷入局部极值和收敛精度低的不足,分析了基本PSO算法早熟收敛的原因,提出具有自适应邻域探测机制的改进型粒子群优化(ANE-PSO)算法.该算法在进化过程中以概率总体递减的方式,选择部分粒子对最佳位置按半径总体递减的规则进行邻域探测,并引入速度变异算子,提高种群的多样性,增强了算法的全局搜索能力.并证明它依概率1收敛到全局最优解.通过与其它三个改进算法比较.结果表明ANE-PSO具有较好的全局搜索能力,收敛速度较快,稳定性较好,且没有增加时间复杂度,较有效的避免了早熟收敛问题.     

基于云模型的PSO算法求解差异工件单机批调度问题

为了提高粒子群（PSO）算法的性能,提出一种基于云模型理论的改进PSO算法,并应用于差异工件单机批调度问题的求解。首先根据粒子的适应值把种群划分为三个子群,提出一种随机的位置和速度更新方法,来有效平衡算法的局部和全局搜索;然后引入基于云模型理论的自适应参数策略,不同的子群采用不同的惯性权重生成方法,提高种群的多样性和算法的收敛速度。实验比较结果验证了该算法的全局搜索性能。     

基于遗传交叉因子的改进粒子群优化算法

提出一种基于遗传交叉因子的改进粒子群优化算法,通过自适应变化惯性权重来改善算法的收敛性能,借鉴遗传算法中的选择交叉操作增加粒子多样性,通过引入交叉因子增强群体粒子的优良特性,减小了算法陷入局部极值的可能。对几个典型的测试函数进行仿真表明,该算法较标准粒子群优化算法(PSO)提高了全局搜索能力和收敛速度,改善了优化性能。     

一种采用云自适应粒子群算法的盲源分离

针对大多盲源分离算法全局收敛性能不理想,收敛速度慢的缺陷,借鉴自适应粒子群算法的思想,利用云模型中云滴的随机性和稳定倾向性特点,提出一种云理论的自适应粒子群(CAPSO)盲源分离算法,以分离信号的峭度为目标函数,用自适应调整策略把粒子群分为三个子群,根据云方法修改普通子群的惯性权重,使惯性权重随着适应度值自适应调整.仿真结果表明,改进算法能完成含噪信号分离,并且有效地避免了早熟收敛,较基本PSO提高了全局搜索能力和收敛速度,分离效果好.     

基于面向对象自适应粒子群算法的神经网络训练*

针对传统的神经网络训练算法收敛速度慢和泛化性能低的缺陷,提出一种新的基于面向对象的自适应粒子群优化算法(OAPSO)用于神经网络的训练。该算法通过改进PSO的编码方式和自适应搜索策略以提高网络的训练速度与泛化性能,并结合Iris和Ionosphere分类数据集进行测试。实验结果表明：基于OAPSO算法训练的神经网络在分类准确率上明显优于BP算法及标准PSO算法,极大地提高了网络泛化能力和优化效果,具有快速全局收敛的性能。     

一种具有初始化功能的自适应惯性权重粒子群算法

提出了一种改进的具有初始化功能的自适应惯性权重粒子群优化(PSO)算法.该算法首先引入自适应惯性权重策略均衡全局和局部搜索能力,并针对运行过程中出现停滞现象的粒子群,围绕其加权重心位置重新初始化,引导粒子突破了局部极值的限制,提高了算法的收敛速度.最后,将此算法、PSO算法及惯性权重线性递减的PSO(LDW-PSO)算法进行了比较.实验结果表明,该算法不仅有效地增强了粒子突破局部极值的能力,而且算法的收敛速度和稳定性也有了一定的提高.     

基于灰狼优化的反向学习粒子群算法

针对粒子群算法（PSO）易早熟收敛、逃离局部最优能力差、精度低等缺点,提出一种基于灰狼优化的反向学习粒子群算法。该算法对最优粒子采用反向学习策略产生反向解,扩大种群的搜索范围,增强了算法的全局搜索能力;对其非最优粒子采用新型社会学习方式,提高其搜索效率和开采性能;同时,针对PSO收敛精度较低的问题,引入灰狼优化算法,并对其收敛因子产生扰动,平衡算法全局和局部搜索性能并提高其精度。在CEC2017测试函数上进行仿真实验,结果表明,在相同的实验条件下,改进后的粒子群算法在收敛精度和收敛速度上有显著提升,且其性能明显优于标准粒子群算法。     

求解TSP的自适应优秀系数粒子群优化算法

针对基本离散粒子群优化（PSO）算法求解旅行售货商问题（TSP）时容易陷入局部最优解和早熟收敛的问题,提出了一种基于自适应优秀系数的粒子群（SECPSO）算法。为了提高算法的全局搜索能力,在已有工作的基础上,进一步利用启发式信息对静态的路径优秀系数进行修改,使之可根据解的搜索过程进行自适应动态调整;另外,为了进一步提高解的精确性和算法的收敛速度,添加了3-opt搜索机制,提高算法的局部搜索能力。利用Matlab进行了实验仿真,用国际通用的TSP数据库（TSPLIB）中的若干经典实例对算法性能进行了测试。实验结果表明,与其他几种算法相比,SECPSO算法在全局寻优能力和更快的收敛速度方面表现更优,是求解TSP问题的一种有潜力的智能算法。     

Only connect: teaching, technology and telesis

Abstract This paper describes an approach to the design of interactive multimedia materials being developed in a European Community project. The developmental process is seen as a dialogue between technologists and teachers. This dialogue is often problematic because of the differences in training, experience and culture between them. Conditions needed for fruitful dialogue are described and the generic model for learning design used in the project is explained.     

European Community policy and the market

Abstract This paper starts with some reflections on the policy considerations and priorities which are shaping European Commission (EC) research programmes. Then it attempts to position the current projects which seek to capitalise on information and communications technologies for learning in relation to these priorities and the apparent realities of the marketplace. It concludes that while there are grounds to be optimistic about the contribution EC programmes can make to the efficiency and standard of education and training, they are still too technology driven.     

一种自适应子融合集成多分类器方法

融合集成方法已经广泛应用在模式识别领域,然而一些基分类器实时性能稳定性较差,导致多分类器融合性能差,针对上述问题本文提出了一种新的基于多分类器的子融合集成分类器系统。该方法考虑在度量层融合层次之上通过对各类基多分类器进行动态选择,票数最多的类别作为融合系统中对特征向量识别的类别,构成一种新的自适应子融合集成分类器方法。实验表明,该方法比传统的分类器以及分类融合方法识别准确率明显更高,具有更好的鲁棒性。     

煤矿井下安全监控分站的设计及其仿真实现

为了设计一种具有低成本、低功耗、易操作、功能强且可靠性高的煤矿井下安全分站,针对煤矿安全生产实际,文章提出了采用MCS-51系列单片机为核心、具有CAN总线通信接口的煤矿井下安全监控分站的设计方案;首先给出煤矿井下安全监控分站的整体构架设计,然后着重阐述模拟量输入信号处理系统的设计过程,最后说明单片机最小系统及其键盘、显示、报警、通信等各个组成部分的设计;为验证设计方案的可行性与有效性,使用Proteus软件对设计内容进行仿真验证,设计的煤矿井下安全监控分站具有瓦斯、温度等模拟量参数超标报警功能和电机开停、风门开闭等开关量指示功能;仿真结果表明:设计的煤矿井下安全监控分站具有一定的实际应用价值.     

Avoiding semantic and temporal gaps in developing software intensive systems

Development of software intensive systems (systems) in practice involves a series of self-contained phases for the lifecycle of a system. Semantic and temporal gaps, which occur among phases and among developer disciplines within and across phases, hinder the ongoing development of a system because of the interdependencies among phases and among disciplines. Such gaps are magnified among systems that are developed at different times by different development teams, which may limit reuse of artifacts of systems development and interoperability among the systems. This article discusses such gaps and a systems development process for avoiding them.     

基于QTE的蒙古文显示机制研究与实现

蒙古语言是中国蒙古族使用的通用语言,由于蒙古文区别于其他文字的书写方式和其自身变形机制等特点,在很多通用的文字处理引擎中都不被支持。在嵌入式产品开发与应用领域中Linux加QTE已经成为流行方式。该文给出了一种在QTE环境上实现基于标准Unicode的蒙古文点阵显示和变形算法, 并自定义了支持蒙古文的QTE组件,扩展了QTE功能,为在Linux加QTE方式的嵌入式体系结构中处理蒙古文提供了一种解决方法。     

Designing economic np control charts: A programmed simulation approach

This paper presents control charts models and the necessary simulation software for the location of economic values of the control parameters. The simulation program is written in FORTRAN, requires only 10K of main storage, and can run on most mini and micro computers. Two models are presented - one describes the process when it is operating at full capacity and the other when the process is operating under capacity. The models allow the product quality to deteriorate to a further level before an existing out-of-control state is detected, and they can also be used in situations where no prior knowledge exists of the out-of-control causes and the resulting proportion defectives.     

基于AD9626的模拟信号采集存储卡设计

自然界的绝大部分信号都是以模拟的形式存在,因此模拟信号的采集转换存储在数字时代十分关键。文章讨论了在雷达信号处理领域基于AD9626的AD采集存储卡的设计原理、硬件结构和程序设计与芯片配置等问题,为今后相关领域的研究提供了可参考的方案。     

The development of robot art

Going through a few examples of robot artists who are recognized worldwide, we try to analyze the deepest meaning of what is called “robot art” and the related art field definition. We also try to highlight its well-marked borders, such as kinetic sculptures, kinetic art, cyber art, and cyberpunk. A brief excursion into the importance of the context, the message, and its semiotics is also provided, case by case, together with a few hints on the history of this discipline in the light of an artistic perspective. Therefore, the aim of this article is to try to summarize the main characteristics that might classify robot art as a unique and innovative discipline, and to track down some of the principles by which a robotic artifact can or cannot be considered an art piece in terms of social, cultural, and strictly artistic interest. This work was presented in part at the 13th International Symposium on Artificial Life and Robotics, Oita, Japan, January 31–February 2, 2008     

A human-computer interface for non-computer specialists

The COM teleconferencing system was designed to be easy to use for both beginners and people with much computer experience. A number of design choices in organizing the human-computer interface were considered very carefully. These design problems are not unique for teleconferencing applications, but will appear in many other developments of human-computer interfaces for non-computer specialists. This report discusses naming conventions, menu format, user commands, help facility and the treatment of ‘type ahead’ from the users.