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1.
介绍了数据挖掘的关联分析技术,对典型的关联分析算法进行了分析和研究,给出了刑事案件分析中应用关联分析的挖掘思路和方法,并以"两抢一盗"案件为例进行分析和验证.  相似文献   

2.
多复变在非交换非结合领域的推广近年来取得了迅猛的发展.本文简单介绍这方面的最新进展,其中包括切片Clifford分析、离散Clifford分析、Hermitian Clifford分析、Dunkl Clifford分析、四元数分析、八元数分析,离散复分析在统计物理中Ising模型的应用,以及与切片Clifford分析相关的S-谱理论在量子物理的应用.  相似文献   

3.
隐变量交互效应分析方法的比较与评价   总被引:2,自引:1,他引:1  
本文通过一个实例,比较了分析隐变量交互效应的主要方法,包括用隐变量的因子得分做回归分析、分组线性结构方程模型分析、加入乘积项的结构方程模型分析和两步最小二乘回归分析,并评价了这些方法的优缺点。  相似文献   

4.
份额——偏离分析法在河北省工业产业定位分析中的应用   总被引:2,自引:0,他引:2  
对河北省工业产业进行定位分析,首先对份额——偏离分析法及区位商分析法做了简单的介绍;然后利用S-S分析法和区位商分析法对河北省工业产业的相对优势进行了分析,同时分析了河北省工业在区域内的绝对优势;最后结合以上两方面分析结论对河北省工业产业进行了定位分析.  相似文献   

5.
介绍了主成份分析的数学模型,并用于三峡库区区域经济指标分析,介绍基于统计分析软件SPSS和Excel进行经济分析的方法和步骤,为三峡库区区域经济分析提供一种具体的可行的计算机辅助决策分析方法.  相似文献   

6.
由付里叶分析到小波分析的进展   总被引:3,自引:0,他引:3  
本文通过对付里叶分析和小波分析的详细比较 ,展示小波分析的特点和优越性 ,有助于深化对小波分析的认识和理解  相似文献   

7.
列举了弹性函数在数学分析、经济分析和数值分析三个方面的应用.在数学分析方面利用弹性函数分别给出了函数超(次)加性和几何凸(凹)性的判别定理,在经济分析和数值分析方面利用弹性函数进行了简单的弹性分析和误差分析.  相似文献   

8.
黄金莹  赵宇 《工科数学》2009,(4):180-182
列举了弹性函数在数学分析、经济分析和数值分析三个方面的应用.在数学分析方面利用弹性函数分别给出了函数超(次)加性和几何凸(凹)性的判别定理,在经济分析和数值分析方面利用弹性函数进行了简单的弹性分析和误差分析.  相似文献   

9.
首先指出了数值分析双语教学的目的和意义.其次,分析了数值分析双语教学中存在的问题.最后,给出了数值分析双语教学的一些措施.  相似文献   

10.
小波分析在测试信号分析中的应用   总被引:9,自引:0,他引:9  
本文给出了小波的基本原理和构造方法以及小波分析的快速算法,将小波分析方法(WAM)引入到非平稳冲击信号的分析中,作为小波分析应用实例,对汽车齿轮箱的断齿测信号进行了分析,给出了分析结果  相似文献   

11.
In this paper, the impact of preventive activities on the economics of production systems has been discussed. A defective production system has been used to evaluate the financial return of a system with and without preventive activity. A mathematical model has been developed to simulate the situation. A practical case in the automotive industry has been used to verify the model. According to this research, it has been found that preventive activities will affect the return of the production system, and the effect depends on the cost of the action that has been taken.  相似文献   

12.
An algorithm for the numerical solution of a system of two parabolic equations of a special form has been presented, and its stability has been proved. Estimates of the numerical solutions obtained have been made. Conditions guaranteeing the applicability of the sweep method are determined, and the time step at which the iterative method has the inner convergence has been estimated. An example of the application of the algorithm in soil science has been presented.  相似文献   

13.
Solvent extraction of indium from malonic acid medium by Primene JM-T has been studied. The extraction has been studied as a function of pH and concentrations of malonic acid and sodium malonate. The nature of the acid-amine complex has been established by chemical analysis and by the application of the method of Hogfeldt and Fredlund. The equilibrium constant for the reaction has also been calculated. The nature of the indium complexes getting extracted has also been discussed.  相似文献   

14.
This article presents a software reliability growth model based on non-homogeneous Poisson process. The main focus of this article is to deliver a method for software reliability modelling incorporating the concept of time-dependent fault introduction and fault removal rate with change point. Also in this article, a cost model with change point has been developed. Based on the cost model optimal release policy with change point has been discussed. Maximum likelihood technique has been applied to estimate the parameters of the model. The proposed model has been validated using some real software failure data. Comparison has been made with models incorporating change point and without change point. The application of the proposed cost model has been shown using some numerical examples.  相似文献   

15.
The dark spatial soliton interaction in nonlinear Kerr medium has been studied in this paper. The problem has been solved by the use of the slowly varying envelope approximation in solving coupled nonlinear Schrödinger equations. The perturbation nature of dark spatial soliton interaction has been described and some of their key properties has been discussed as well in the paper.  相似文献   

16.
In this paper, a periodic review inventory system has been analyzed in a mixed imprecise and uncertain environment where fuzziness and randomness appear simultaneously. A model has been developed with customer demand assumed to be a fuzzy random variable. The lead-time has been assumed to be a constant. The lead-time demand and the lead-time plus one period’s demand have also been assumed to be fuzzy random variables. A methodology has been developed to determine the optimal inventory level and the optimal period of review such that the total expected annual cost in the fuzzy sense is minimized. A numerical example has been presented to illustrate the model.  相似文献   

17.
A solution of the Dirichlet problem for a fractional-order ordinary differential equation has been found. Green’s function has been constructed for the problem concerned. The problem solution has been written in terms of Green’s function. A theorem on the existence and uniqueness of a solution of the posed problem has been proved, and a condition for its unique solvability has been derived. It is shown that the condition of solvability may only be violated a finite number of times.  相似文献   

18.
从供应链管理协调、优化的角度出发,探讨营销渠道的建设.以移动通讯行业为背景,提出了渠道协同应用的多目标规划模型,探讨了模型求解的方法,并以某移动分公司的数掘进行了算例分析.  相似文献   

19.
用简单的方法证明了矩阵LU分解定理,讨论了定理的推广以及定理相应的数值实现,并对《数值分析》课程教学方法改革进行了思考.  相似文献   

20.
病态线性方程组的判定方法   总被引:2,自引:0,他引:2  
针对用条件数来衡量方程组的性态将随阶数增大而变得异常困难这一问题,分析了病态线性方程组产生的原因,提出了一种判定方法,探讨了对一定精度要求的解的可允许扰动的数量级,实例证明了这种方法的有效性.  相似文献   

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