基于交互式隶属函数调整的模糊神经网络

对基于模糊神经网络的人脸识别方法进行了研究,提出的模糊神经网络在高维空间（如人脸）上进行模糊规则获取中得到的最终隶属度函数值并不合理,易得到零值的情况,对模糊规则获取过程中的隶属度函数初始值进行人为地调整．在ORL人脸库的实验结果表明,该方法具有良好的性能．     

神经模糊控制的纸浆专家系统设计

为了控制纸浆浓度的稳定性并提高纸浆的质量,对碎浆工序的时间进行智能模糊控制．结合神经网络;和模糊控制技术,利用经验数据和隶属函数生成相应控制规则．控制系统根据纸浆浓度和浓度变化率自动控制碎浆的时间．仿真实验表明,控制系统具有良好的记忆和联想功能且性能稳定．     

模糊PID控制的遗传算法优化

模糊控制中的模糊推理规则和隶属函数的选取往往依据专家或技术人员的经验,具有较大的人为主观性,尤其在较强的非线性系统和未知动态环境条件下,其控制性能往往达不到客观要求。本文采用改进的遗传算法优化模糊控制中的比例因子,从而对控制规则和隶属函数进行优化。仿真结果表明,经过优化后的模糊控制器控制规则和隶属函数更加客观合理,控制系统的动、静态性能都有较大提高。     

基于分布式的煤矿井下温度调节算法研究

为了解决煤矿井下温度控制的应用需求,提出了一种采用分布式的煤矿井下温度调节算法.该算法通过分布在矿井下不同位置的温度传感器探测矿井下的温度,采用模糊神经网络的策略对井下的温度进行调节和控制.给出模糊神经网络的隶属度函数以及模糊函数,仿真测试表明,所设计的温度控制算法具有较强的鲁棒性.     

一种基于vague集的模糊描述逻辑

为实现语义web上包含复杂模糊知识模糊本体的表示和推理,提出了一种基于vague集的模糊描述逻辑——vague ALC.首先介绍了vague集的定义,然后给出vague ALC的语法和语义的形式化描述,并规定vague ALC知识库中的公理和断言形式,指出了其推理的基本问题,最后给出了vagueALC的检验概念可满足性的tableau推理算法.Vague ALC建立于vague集之上,用一个区间来表示一个成员函数的隶属度,解决了Zadeh模糊集用单一的数不能准确表示一个成员函数隶属度的问题.Vague ALC具有比ALC更强的表达能力,能够表示复杂的模糊知识并基于它们完成推理任务,因此,vague ALC可实现语义web上包含复杂模糊知识的模糊本体的表示和推理.     

基于多最小支持度的挖掘算法研究

数据挖掘是从事务数据库中抽取有用的知识和感兴趣的模式,而从事务数据库中发现关联规则是最常见的挖掘技术之一。提出一个遗传模糊关联规则挖掘框架和综合聚类、模糊和遗传概念的多最小支持度的遗传模糊关联规则挖掘算法。该算法从定量事务数据库中抽取合理的多最小支持度值、隶属函数和模糊关联规则,首先使用k—means聚类算法采集相似项目,然后初始化一个种群设定相同的支持度值,每一个染色体通过需求满足的标准和隶属函数的适应性来评估是否满足其适应度。     

基于禁忌搜索的模糊规则自动获取

本文采用集中性和多样性策略对禁忌搜索进行改进,提出了一种基于模糊神经网络的混合禁忌搜索优化算法(FNN-based Hybrid Tabu Search Algorithm,FNN-HTS),用于同时优化模糊神经网络的结构和参数以提取出一组尽量精练的模糊规则。在FNN-HTS中,禁忌搜索用于同时优化网络结构和隶属函数参数,结合最小二乘法快速求解规则后件的线性参数。非线性函数逼近的实验结果表明所提出的方法能获得一组更精练的规则和更小的误差。     

基于模糊神经网络PID控制的打捆机控制系统设计

为实现打捆机工作过程中秸秆喂入量随机具行驶速度变化的精准控制。采用由模糊控制、神经网络和PID组合算法构成的控制系统实现对打捆机捡拾喂入量的精确控制,用电子皮带秤对喂入量实时检测,以实测值与设定值的误差和误差变化率作为输入量并进行模糊化处理、确定隶属函数并通过模糊推理和反模糊化生成输出量作为控制系统的调控因子,采用RBF神经网络调控模糊控制过程,以梯度下降算法对网络加权系数、基宽向量和中心向量进行调整。田间试验结果表明该控制系统可以将喂入量误差控制在±5%之内,且对机具速度控制响应速度较快。模糊神经网络PID控制模式具有控制精度高、抗干扰能力强、收敛速度快等特点,为打捆机控制系统的发展提供了一种方法。     

虚拟模糊热点温度测试系统设计

将模糊理论与虚拟仪器技术相结合,探讨了虚拟模糊热点温度测试系统的设计。主要包括模糊系统的建立,所用到的隶属函数,模糊测量过程和程序设计等,最后给出系统运行结果。     

基于混沌时间序列的模糊神经网络预测研究

为研究混沌时间序列预测问题,提出了一种结合模糊神经网络的预测方法,对输入数据进行模糊规则提取,再经过优化得到最佳模糊规则库。通过神经网络的自适应学习能力调整隶属函数参数及网络权值等信息,对相关混沌时间序列进行预测。对Mackey-Glass系统及Lorenz系统进行仿真实验,结果证明了该系统的有效性。     

卡思卡特城堡

It is worthy of noting that, whilst Crookston Castle witnessed the earlier and happier portion of Mary's variegated life,     

不同的吃喝玩乐

一、吃和喝吃苹果 eat an apple, 吃药 take medicine,吃糖 have some sweets,吃饭 have one's meals,吃馆子 dine out,吃惊 be surprised/     

漏洞百出的教育

Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help?     

Western and Eastern culture differences in commercial field

The communication of people partially is the communication of cultures. Culture has a direct effect on international commercial activities in all aspects. Different conceptions about time, space, equality, law and the like, lead people to deal with things in different ways. So to know cultures of the counterpart is to facil-itate our enterprises so as to have a smooth and successful communication in commercial activity.     

只要努力,不要后悔

There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love.     

浅谈移民问题

Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject.     

Sister Carrie, an Adherent of Desires

Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities.     

Improvement of one-cycle controller by use of proportional integral differential controller

1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec…     

风的曲线

Rosco and I wait for the fishermen to return.I sit at a wooden bench near the store at Mt.Baker Resort and watch the clouds change shape. Rosco has my belt around his neck and an eight foot tow chain hooked to a tree. Dogs must be on a leash. Ducks and rabbits are loose.