基于FNN与GA相融合的数据挖掘方法研究

模糊神经网络即具有输入信号是模糊量的神经网络,是模糊系统与神经网络相结合的产物,汇聚了二者的优点;遗传算法是一种自适应全局优化概率搜索算法。研究了基于模糊神经网络与遗传算法相融合的一种算法,在应用模糊神经网络进行数据挖掘前,应用遗传算法完成隶属函数的训练,以便更好地进行模糊神经网络学习;经过模糊神经网络学习后,提取相关规则,再次应用遗传算法,进行规则剪枝,提高数据挖掘效率。实验表明,与传统方法相比,该方法能够更快速、更加准确地进行数据挖掘,提取更精确的推理规则。     

基于FNN与GA相融合的数据挖掘方法研究

模糊神经网络即具有输入信号是模糊量的神经网络,是模糊系统与神经网络相结合的产物,汇聚了二者的优点;遗传算法是一种自适应全局优化概率搜索算法.研究了基于模糊神经网络与遗传算法相融合的一种算法,在应用模糊神经网络进行数据挖掘前,应用遗传算法完成隶属函数的训练,以便更好地进行模糊神经网络学习;经过模糊神经网络学习后,提取相关规则,再次应用遗传算法,进行规则剪枝,提高数据挖掘效率.实验表明,与传统方法相比,该方法能够更快速、更加准确地进行数据挖掘,提取更精确的推理规则.     

后向传播算法及其实用性研究

本文通过对神经网络及其后向传播算法的介绍,优化其处理流程和处理步骤,并对该算法在数据挖掘领域中的实用性进行了相应研究,并从神经网络中提取规则,提出一种规则库排序算法。     

后向传播算法及其实用性研究

本文通过对神经网络及其后向传播算法的介绍，优化其处理流程和处理步骤，并对该算法在数据挖掘领域中的实用性进行了相应研究，并从神经网络中提取规则，提出一种规则库排序算法。     

一种改进的RBF网络结构及其参数的设计方法

针对神经网络在学习之后,模糊系统的原始结构被改变,或削弱了规则可解释性这一模糊系统突出特点的问题,给出了一种提取模糊If-then规则的径向基函数(RBF)神经网络结构。该神经网络结构具有能够同时清晰表达模糊控制系统输入空间划分和模糊规则可解释性的特点,克服了以往用神经网络提取模糊规则不能直观体现模糊语言规则可解释性的不足,并详细地讨论了此网络结构参数的设计方法。     

基于粗集神经网络的分类方法

数据挖掘是近年来发展快速的信息处理新技术,如何有效地从高维的、超大规模数据中提取隐藏的有用信息,是该领域的研究核心。针对海量数据的挖掘分类问题,将粗集和神经网络紧密结合建立一种新的高效数据挖掘模型,即利用粗糙集理论中的知识简化方法,去掉冗余的属性特征和样本,然后,利用性能优良的模糊kohonen 聚类神经网络进行聚类分析,最后形成分类规则。该模型充分融合了粗集强大的规则提取能力和神经网络优良的分类能力。实验证明模型具有很好的分类效率,且有较高的精确性。     

基于神经网络与遗传算法的数据挖掘体系结构

从神经网络中提取规则可以有效地应用于数据挖掘中的分类问题。作为一种有效的优化方法，遗传算法可以应用于规则剪枝。提出了一个基于神经网络与遗传算法的数据挖掘体系结构，可以应用于数据挖掘中的分类问题。     

一种基于模糊神经网络的数据挖掘算法

提出了一种基于模糊神经网络的数据挖掘算法,把模糊理论和神经网络结合起来构造、训练模糊神经网络,弥补了神经网络结构复杂、网络训练时间长、结果表示不易理解等不足。经过模糊神经网络的建立和训练达到精度要求,实现了运用模糊神经网络方法从数据库中提取知识的目标。     

一款可编程语音处理器的设计与应用

提出了一种基于模糊神经网络的数据挖掘算法,把模糊理论和神经网络结合起来构造、训练模糊神经网络,弥补了神经网络结构复杂、网络训练时间长、结果表示不易理解等不足.经过模糊神经网络的建立和训练达到精度要求,实现了运用模糊神经网络方法从数据库中提取知识的目标.     

基于零代价函数神经网络的神经-模糊系统与应用

以洗衣机的控制对象,提出了一种神经模糊系统,对其进行建模和控制.根据人类专家的经验提取出来的语言规则,置于模糊逻辑系统之中,并引入线性隶属函数将这些模糊规则转化成数值.这些数值(输入、输出样本对)用来作为神经网络的训练样本.为了改善洗衣机的性能,采用的是基于零代价函数的神经网络训练算法,因此,神经网络的输出数据可以转换成模糊规则,而不存在误差.展望了神经模糊系统方法的发展方向和在洗衣机中的应用.     

基于递阶遗传算法模糊加权神经网络的模糊规则自动获取

针对模糊规则的自动获取一直是模糊系统的一个瓶颈问题,提出一种基于递阶结构的混合编码遗传算法与进化规划相结合的模糊加权神经网络学习新算法,利用该算法同时优化模糊加权神经网络的结构和参数,最后说明了从网络中提取模糊规则的方法,从而自动获得最优的模糊规则。分析和实验结果表明,本文方法在规则提取和分类准确性等方面比其他方法更好。     

Are artificial neural networks white boxes?

In this paper, we introduce a novel Mamdani-type fuzzy model, referred to as the all-permutations fuzzy rule base (APFRB), and show that it is mathematically equivalent to a standard feedforward neural network. We describe several applications of this equivalence between a neural network and our fuzzy rule base (FRB), including knowledge extraction from and knowledge insertion into neural networks.     

自适应模糊神经网络研究

模糊神经网络提供了从人工神经网络中模糊规则的抽取。本文研究模糊神经网络的自适应学习，规则插入和抽取及神经－模糊推理的FuNN模型，把遗传算法作为系统模糊规则选择的自适应策略之一。     

Research and Design of a Fuzzy Neural Expert System

We have developed a fuzzy neural expert system that has the precision and learning ability of a neural network.Knowledge is acquired from domain experts as fuzzy rules and membership functions.Then,they are converted into a neural network which implements fuzzy inference without rule matching.The neural network is applied to problem-solving and learns from the data obtained during operation to enhance the accuracy.The learning ability of the neural network makes it easy to modify the membership functions defined by domain experts.Also,by modifying the weights of neural networks adaptively,the problem of belief propagation in conventional expert systems can be solved easily.Converting the neural network back into fuzzy rules and membership functions helps explain the inner representation and operation of the neural network.     

一种基于RBF网络提取模糊规则的算法实现

径向基函数网络和模糊推理系统在一些柔和的情况下具有等价的功能,因此可以利用神经网络的学习算法来调节模糊系统的参数,学习后的模糊系统具有自学习和自组织性,但是削弱了模糊系统的可解释性。将模糊逻辑推理与神经网络控制技术相结合,分析了一种改进的径向基函数(RBF)神经网络结构,这种模糊神经网络结构能够有效地表达模糊系统可解释性这一突出特点,也使模糊系统具有了较好的自学习和自组织能力、通过VC 实现了基于这种RBF网络结构提取模糊规则的算法,并进行了仿真实验,仿真结果表明该算法是比较有效的。     

Heuristic constraints enforcement for training of and knowledgeextraction from a fuzzy/neural architecture. I. Foundation

Using fuzzy/neural architectures to extract heuristic information from systems has received increasing attention. A number of fuzzy/neural architectures and knowledge extraction methods have been proposed. Knowledge extraction from systems where the existing knowledge limited is a difficult task. One of the reasons is that there is no ideal rulebase, which can be used to validate the extracted rules. In most of the cases, using output error measures to validate extracted rules is not sufficient as extracted knowledge may not make heuristic sense, even if the output error may meet the specified criteria. The paper proposes a novel method for enforcing heuristic constraints on membership functions for rule extraction from a fuzzy/neural architecture. The proposed method not only ensures that the final membership functions conform to a priori heuristic knowledge, but also reduces the domain of search of the training and improves convergence speed. Although the method is described on a specific fuzzy/neural architecture, it is applicable to other realizations, including adaptive or static fuzzy inference systems. The foundations of the proposed method are given in Part I. The techniques for implementation and integration into the training are given in Part II, together with applications     

Mining the fuzzy control rules of aeration in a Submerged Biofilm Wastewater Treatment Process

This paper presents a special rule base extraction analysis for optimal design of an integrated neural-fuzzy process controller using an “impact assessment approach.” It sheds light on how to avoid some unreasonable fuzzy control rules by screening inappropriate fuzzy operators and reducing over fitting issues simultaneously when tuning parameter values for these prescribed fuzzy control rules. To mitigate the design efforts, the self-learning ability embedded in the neural networks model was emphasized for improving the rule extraction performance. An aeration unit in an Aerated Submerged Biofilm Wastewater Treatment Process (ASBWTP) was picked up to support the derivation of a solid fuzzy control rule base. Four different fuzzy operators were compared against one other in terms of their actual performance of automated knowledge acquisition in the system based on a partial or full rule base prescribed. Research findings suggest that using bounded difference fuzzy operator (O_b) in connection with back propagation neural networks (BPN) algorithm would be the best choice to build up this feedforward fuzzy controller design.     

基于改进神经网络的WEB数据挖掘研究

人工神经网络是在现代神经生物学研究成果的基础上发展起来的一种模拟人脑信息处理机制的网络系统,它不但具有处理数值数据的一般计算能力,而且还具有处理知识的思维、学习、记忆能力.基于神经网络的数据挖掘过程由数据准备、规则提取和规则评估三个阶段组成.研究了分解型规则抽取算法,在分析了分解型算法后,利用关联法对输入输出神经元进行关联计算,按关联度排完序之后,用神经网络进行结点选择,可以大大减少神经网络的输入结点个数数据集中数据的验证,表明了方法的有效性.     

On connectionism, rule extraction, and brain-like learning

There is a growing body of work that shows that both fuzzy and symbolic rule systems can be implemented using neural networks. This body of work also shows that these fuzzy and symbolic rules can be retrieved from these networks, once they have been learned by procedures that generally fall under the category of rule extraction. The paper argues that the idea of rule extraction from a neural network involves certain procedures, specifically the reading of parameters from a network, that are not allowed by the connectionist framework that these neural networks are based on. It argues that such rule extraction procedures imply a greater freedom and latitude about the internal mechanisms of the brain than is permitted by connectionism, but that such latitude is permitted by the recently proposed control theoretic paradigm for the brain. The control theoretic paradigm basically suggests that there are parts of the brain that control other parts and has far less restrictions on the kind of procedures that can be called “brain like”. The paper shows that this control theoretic paradigm is supported by new evidence from neuroscience about the role of neuromodulators and neurotransmitters in the brain. In addition, it shows that the control theoretic paradigm is also used in connectionist algorithms, although never acknowledged explicitly. The paper suggests that far better learning and rule extraction algorithms can be developed using these control theoretic notions and they would be consistent with the more recent understanding of how the brain works and learns     

Fuzzy auto-associative neural networks for principal component extraction of noisy data.

In this paper, we propose a fuzzy auto-associative neural network for principal component extraction. The objective function is based on reconstructing the inputs from the corresponding outputs of the auto-associative neural network. Unlike the traditional approaches, the proposed criterion is a fuzzy mean squared error. We prove that the proposed objective function is an appropriate fuzzy formulation of auto-associative neural network for principal component extraction. Simulations are given to show the performances of the proposed neural networks in comparison with the existing method.