查询词典 fuzzy theory

In this paper, fuzzy theory, Markov chain and RFM model are integrated to evaluate customer lifetime values. This approach calculates the profit contribution of customers in every purchasing situation. Firstly, customer purchasing state is updated contiguously by fuzzy theory and RFM model with transition matrix which represents the probabilities among purchasing states. Then the profit contribution of each period is computed by using revenue and cost data. Finally, the profit contribution of each customer is accumulated through some discounting consideration. This will construct the final customer lifetime values.

本研究结合模糊理论、马可夫链、和RFM(recency， frequency， monetary； RFM)模式，配合折现模式来计算顾客终身价值，其中模糊理论及RFM模型定义顾客之购买状态，马可夫链则推算顾客在每期购买状态改变的机率，然后推估出顾客在每期交易的转换机率，再结合产品的收益与成本资料，算出顾客在各期对公司的利润贡献，最后将各期的利润贡献折现加总，计算出各种购买状况下的顾客价值，利用此顾客价值就可指出哪些是对企业有利的顾客。

Firstly, the uncertainty existing in inventory management was described by using fuzzy theory, and then the fuzzy EOQ model with imperfect quality and fuzzy ordering cost was proposed.

首先利用模糊理论描述了库存管理中的不确定性，建立了缺陷率和订货费用模糊下的经济订货批量模型，以确定合理的订货批量，使得整个利润最大。

In this new model, the fuzzy-Markov theory is applied to analyze and predict the state transition of the uncertain factor in SPA model. By this way, the precision can obtained a significant improvement. Based on the correlation coefficient and mean square deviation of eigenvalue, two verify methods for fuzzy-Markov fitting in multidimensional space are suggested.

针对fuzzy-Markov子系统，分别提出了基于相关系数和特征值方差的多维空间模糊马尔可夫链拟合效果检验的两个新方法，并据此定量考察fuzzy-Markov子系统对参数响应的敏感性，用以确定最佳的模型参数组合。

Based on grey system theory and fuzzy theory, uncertain decision making problems and several relative articles were studied, then points out the advantage and shortage of them when dealing with grey fuzzy set were pointed out.

以灰色系统理论和模糊数学为基础，探讨了不确定型决策问题的特性，分析了一些相关成果中所给方法在直接处理灰色模糊数方面的优势与不足。

In this paper, on the basis of fuzzy quotient space theory, cluster analysis methods based on fuzzy similarity relations and normalized distance are proposed to solve data structure analysis of complex systems.

在商空间理论基础上，提出了基于Fuzzy相似关系和归一化距离的聚类分析方法，用以解决复杂系统的数据结构分析问题。

This kind of problems is first changed into the model of perceptrons in neural theory, Under the assumption of a finite set of social states. a sufficient and necessary condition for single-valued choice functions to be sum-fuzzy implementable is obtained: a geometric characterization is also given: an efficient algorithm for the sumfuzzy implementation of single-valued choice func...

本文在有限社会状态集合的情形，给出了单值选择函数是和型Fuzzy可实现的一个充要条件；并给出了相关几何描述结论；借助于感知器的学习算法规则给出了单值选择函数的和型Fuzzy实现的有效算法；最后还给出了一个具体例子。

The paper tries to provide a synthetic fuzzy evaluation way to anal yze constrction project management ability and seriate the construction company by fuzzy set theory.

试图通过运用Fuzzy集合理论与模糊综合评审的方法，对这些模糊指标的数值进行分析，并在此基础上对建筑企业的项目管理能力进行排序。

Based on the theory of two-phase fluids dynamics, the general governing equation is established, which is applied to the fields of seepage, consolidation and deposit. For the first time, the mechanics properties of the soil affected by seepage are studied by the means of experiment. The problems of the modified indexes of mechanics and constitutive relation are solved due to the formulations obtained of mechanics parameter under seepage condition. Applied fuzzy theory and modern project design method, the fuzzy probability model for stability analysis is stetted up; Considered variation of mechanics parameter and curtain effect, the deformation patterns of deep execution are systematically analyzed.

基于两相流理论，推导了适用于渗流、固结和沉积的统一形式的控制方程；试验研究了渗流作用下土的力学性质的变化规律，经综合分析得到力学指标的定量表达式，为工程设计和数值计算中力学参数的确定提供了参考；基于模糊理论和现代工程设计方法，建立了基坑失稳的模糊概率模型，为基坑稳定性预测提供了新的方法；对基坑变形规律作了系统分析，考虑了土性变化和帷幕防渗效果对支护结构变形的影响，得到了较满意的结果。

It not only helps furthering our understanding of the mechanism of pre-splitting blasting, but also proposes an effective method for blasting theory and engineering design. Based on a vast amount of blasting vibration data, the paper selects blasting vibration effect parameters using fuzzy theory, and establishes a prediction model of fuzzy neural network of peak particle acceleration.

在分析研究大量现场生产试验爆破振动数据的基础上，提出了一种应用模糊理论优选爆破振动影响参数的方法，并建立了爆破振动峰值模糊神经网络预测模型，对大冶铁矿生产爆破振动进行了预测，平均误差为5.58％，为爆破振动峰值预报提供了一种新的方法。

This method makes up the shortage of traditional decision network planning and makes the blue print choice more reasonable. Because this method comprehensively considers the six aspects of the project. The six aspects are duration ,cost, quantity, technique risk, strategy intention and maintenance. Second, it researched the calculation method of time parameters based on fuzzy triangle number of decision network planning. At last, it studies the fuzzy duration-cost optimization of decision network planning.This dissertation makes use of fuzzy theory to the decision network planning.

首先将模糊综合评判方法应用于决策节点方案选择，从工期、费用、质量、技术风险、战略意图和维护需求等六个方面全面比较各个备选方案，与传统网络计划在进行方案决策时只注重工期和成本两个方面相比，决策效果有所改善；其次，研究了采用模糊三角数表示工序工期情况下的决策网络计划时间参数计算方法以及模糊工期压缩等问题；最后，对模糊决策网络计划工期—成本优化方法进行了探讨。

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Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。