一种基于模糊规则的Multi-agent自动谈判策略

针对当前电子商务中基于Agent的谈判系统的谈判策略的静态性问题,提出基于模糊规则的动态谈判策略。Agent在谈判中能根据对方心理因素和动态确定自己的谈判策略后,产生新一轮的提议,帮助用户做出最优的交易决策,且自动地选择合适的策略。分析表明,采用基于模糊规则的策略比采用固定的策略的谈判结果更让用户感到满意。     

基于多维时态关联规则的演化模糊推理预测算法

挖掘时态关联规则的目的是为了发现带有时态信息的项集之间有趣的关系.由于数据库经常动态更新,时态关联规则的挖掘也应该适应数据库的更新.然而,现有的大多数算法不仅需要重新挖掘更新的数据库,浪费了大量的时间和效率,而且不能利用已存在的规则定量地预测某些项的变化趋势.本文提出了一个基于多维时态关联规则的演化模糊推理预测建模算法（Evolving fuzzy inference model based on multidimensional temporal association rules,EFI-MTAR）,主要优势是构建了一种基于多维时态关联规则的模糊推理建模算法（Fuzzy inference modeling algorithm based on multidimensional temporal association rules,FI-MTAR）,实现了对时间序列的定量预测.此外,为了降低规则更新的代价和加快规则预测的速度,提出了概念漂移检测策略来处理时间序列数据以适应数据库的动态更新.实验结果表明了本文提出算法的有效性和准确性.     

Computational Intelligence for Evolving Trading Rules

This paper describes an adaptive computational intelligence system for learning trading rules. The trading rules are represented using a fuzzy logic rule base, and using an artificial evolutionary process the system learns to form rules that can perform well in dynamic market conditions. A comprehensive analysis of the results of applying the system for portfolio construction using portfolio evaluation tools widely accepted by both the financial industry and academia is provided.      

Fuzzy Constraint-Based Agent Negotiation

Conflicts between two or more parties arise for various reasons and perspectives. Thus, resolution of conflicts frequently relies on some form of negotiation. This paper presents a general problem-solving framework for modeling multi-issue multilateral negotiation using fuzzy constraints. Agent negotiation is formulated as a distributed fuzzy constraint satisfaction problem (DPCSP). Fuzzy constrains are thus used to naturally represent each agent's desires involving imprecision and human conceptualization, particularly when lexical imprecision and subjective matters are concerned. On the other hand, based on fuzzy constraint-based problem-solving, our approach enables an agent not only to systematically relax fuzzy constraints to generate a proposal, but also to employ fuzzy similarity to select the alternative that is subject to its acceptability by the opponents. This task of problem-solving is to reach an agreement that benefits all agents with a high satisfaction degree of fuzzy constraints, and move towards the deal more quickly since their search focuses only on the feasible solution space. An application to multilateral negotiation of a travel planning is provided to demonstrate the usefulness and effectiveness of our framework.     

受限模糊规则进化的入侵检测

基于生物进化机理,提出了模糊规则进化的推理方法,并对初始群体产生加以控制,实现受限的模糊规则进化的入侵检测“LEFRIDS”。该方法可以有效控制规则数,加速检测过程,并且由于变异会产生新的规则,使检测规则不断“新陈代谢”,楗高了对未知攻击的检测能力。     

Methodology for Evolving Fuzzy Kalman Filter Identification

International Journal of Control, Automation and Systems - A methodology based on the smart combination of evolving fuzzy clustering and OKID (Observer/ Kalman Filter Identification) algorithm, is...     

An Evolving Fuzzy Predictor for Industrial Applications

A reliable and online predictor is very useful to a wide array of industries to forecast the behavior of time-varying dynamic systems. In this paper, an evolving fuzzy system (EFS) is developed for system state forecasting. An evolving clustering algorithm is proposed for cluster generation. Clusters are established and modified based on constraint criteria of mapping consistence and compatible measurement. A novel recursive Levenberg–Marquardt (R-LM) method is proposed for online training of nonlinear EFS parameters. The viability of the developed EFS predictor is evaluated based on both simulation from benchmark data and real-time tests corresponding to machinery condition monitoring and material property testing. Test results show that the developed EFS predictor is an effective and accurate forecasting tool. It can capture the system's dynamic behavior quickly and track the system's characteristics accurately. The proposed clustering algorithm is an effective structure identification method. The recursive training technique is computationally efficient, and can effectively improve reasoning convergence.      

可进化的入侵检测系统的模糊分类器研究

由于计算机网络中的正常行为和异常行为难以很好界定,所以许多入侵检测系统经常产生误报警。使用模糊逻辑推理方法,入侵检测系统的误报率则会明显降低,可以在入侵检测系统中,使用一套模糊规则和作用在该集合上的模糊推理算法,来判断是否发生了入侵事件。这种方法面临的主要问题是要有一个针对入侵检测的好的模糊算法。该文提出了一种使用遗传算法产生模糊分类器,以检测误用和入侵事件。主要思想是生成两个进化规则子集合,一个用于描述正常行为,一个用于描述异常行为。其中,正常行为规则进化信息来自正常使用时的操作行为,异常行为规则进化信息来自计算机网络受到入侵时的操作行为。     

模糊逻辑控制器的演化硬件实现

讨论在演化硬件（EHW）平台上实现模糊逻辑控制器的演化,模糊逻辑控制器是由一些if-the。规则的集合和具有模糊逻辑的输入输出语言术语特点的一些成员属性函数所构成,这里的演化硬件平台是指可编程模拟选择器阵列,通过遗传算法（GA）演化出的电路具有很强的自适应、自修复能力。     

模糊关联规则及挖掘算法

本文提出了模糊关联规则的概念,研究了模糊关联规则的性质和挖掘算法,同时还提出了一种新的规则有越性的度量函数。     

模糊属性信息系统的规则约简

1 引言信息系统的规则约简是机器学习与数据挖掘的重要内容。在研究中,大多数算法都是以离散值为处理对象,而在计算机研究与应用领域所处理的很多都是实值属性数据。实值属性信息系统没有明确的等价关系,也难以用属性值的完全相同来判定规则的一致性。因此,对实值属性信息系统的规则约简研究为研究领域所关注。模糊属性信息系统的属性值     

基于模糊聚类的模糊关联规则挖掘

通过模糊聚类，从已知数据中得到数据点对数据类的隶属度，并以此进行模糊关联规则的挖掘，从而使得模糊关联规则的发现不依赖于人类专家预先给出的隶属度函数；并且实验表明。聚类并没有带来显著的顿外计算时间，对于大型数据库，文章提出的方法是有效的。     

一种自适应的模糊关联规则挖掘算法

关联规则是数据挖掘的重要研究内容之一。传统的关联规则挖掘算法仅适于处理二元属性与分类属性。为更好地处理数量属性,提出了一种自适应的基于模糊概念的量化关联规则挖掘算法。该算法克服了传统的离散分区法的不足,改进了已有模糊关联规则支持度的计算方法。引入了一种基于聚类的隶属函数自动生成方法,使得模糊关联规则的发现不依赖于人类专家给出的隶属函数,使得关联规则的表示自然、简明,有利于专家理解。实验表明该算法是有效的。     

模糊关联规则的加权挖掘算法

从实际应用角度,在对模糊关联规则挖掘算法进行改进的基础上,提出了模糊关联规则的加权挖掘算法(FARMA),以及简化的关联规则的加权挖掘算法(SFARMA),通过实验验证了算法的可行性,并对算法的性能进行了讨论.     

模糊关联规则的加权挖掘算法

从实际应用角度，在对模糊关联规则挖掘算法进行改进的基础上，提出了模糊关联规则的加权挖掘算法（FARMA），以及简化的关联规则的加权挖掘算法（SFARMA），通过实验验证了算法的可行性，并对算法的性能进行了讨论。     

运用模糊集挖掘数量属性数据的关联规则

绝大多数关联规则的挖掘方法基于布尔属性数据,但在现实应用中会经常需要对数量属性的数据进行关联挖掘。该文就提出一种算法,在经典Apriori后选集算法的基础上引入了模糊逻辑集合的概念,将数据集中的数量属性按照模糊集合定义进行划分从而将原始事务数据转化成基于模糊集的数据,然后再运用Apriori算法发现潜在的关联规则。     

一种自适应的模糊关联规则挖掘算法

关联规则是数据挖掘的重要研究内容之一.传统的关联规则挖掘算法仅适于处理二元属性与分类属性.为更好地处理数量属性,提出了一种自适应的基于模糊概念的量化关联规则挖掘算法.该算法克服了传统的离散分区法的不足,改进了已有模糊关联规则支持度的计算方法.引入了一种基于聚类的隶属函数自动生成方法,使得模糊关联规则的发现不依赖于人类专家给出的隶属函数,使得关联规则的表示自然、简明,有利于专家理解.实验表明该算法是有效的.     

Learning Fuzzy Rules from Data

We present an algorithm, FUZZEX, for learning fuzzy rules from a corpus of data mapping input antecedents to output consequents. The input and output spaces are first divided into a grid of cells and primitive if % then rules formulated from each occupied input cell in the role of an antecedent The distribution of output cells into which data in the input cell maps, plays the role of the consequent interpreted as a fuzzy set. Those input cells associated with sufficiently similar fuzzy output sets are then combined to form a composite rule. A concise set of rules in Disjunctive Normal Form (DNF) is formed by combining adjacent input cells belonging to the same rule, thereby simplifying the logical expression of the antecedents. Optionally, more succinctness of expression may be obtained by recruiting into a rule, adjacent input cells with (little or) no data, but which happen to simplify rule expression. Preliminary testing on testbed datasets is presented. FUZZEX can be applied effectively to problems of large dimensionality.     

基于模糊相似关系的自动协商系统

基于模糊相似关系,提出一种面向电子商务实际应用的多属性自动协商系统方法。该方法在交易过程中依据单调让步协议,按照一定规则作出适当让步,在保证自身效用前提下,利用启发函数搜索与对方上次提议最接近的提议,从而最大化某一社会福利函数。将该方法与博弈论中经典的Zeuthen策略做了对比实验,仿真方法验证了该方法的有效性,说明了参数对算法性能的影响。