数据挖掘与数据仓库技术及其在保险业中的应用

文章介绍了数据挖掘中常用技术和数据仓库结构．并且探讨了粗糙集方法，决策树方法以及关联规则方法等数据挖掘技术在保险风险规则挖掘中的应用。     

GPRS配电变压器监测系统设计

简要介绍了一种基于GPRS网络通信技术实现的配电变压器监测系统，介绍了系统的组成、控制GPRS模块建立上网连接的过程，以及监控中心的软件设计。     

Finding hidden independent sets in interval graphs

We design efficient competitive algorithms for discovering hidden information using few queries. Specifically, consider a game in a given set of intervals (and their implied interval graph G) in which our goal is to discover an (unknown) independent set X by making the fewest queries of the form “Is point p covered by an interval in X?” Our interest in this problem stems from two applications: experimental gene discovery with PCR technology and the game of Battleship (in a 1-dimensional setting). We provide adaptive algorithms for both the verification scenario (given an independent set, is it X?) and the discovery scenario (find X without any information). Under some assumptions, these algorithms use an asymptotically optimal number of queries in every instance.     

Language recognition by two-way deterministic pushdown automata

It is proved that any bounded context-free language can be recognized by a two-way deterministic automaton with a finite-rotary counter.Translated from Kibernetika i Sistemnyi Analiz, No. 6, pp. 177–181, November–December 2004.This revised version was published online in April 2005 with a corrected cover date.     

Nonlinear inertia weight variation for dynamic adaptation in particle swarm optimization

The particle swarm optimization (PSO) is a relatively new generation of combinatorial metaheuristic algorithms which is based on a metaphor of social interaction, namely bird flocking or fish schooling. Although the algorithm has shown some important advances by providing high speed of convergence in specific problems it has also been reported that the algorithm has a tendency to get stuck in a near optimal solution and may find it difficult to improve solution accuracy by fine tuning. The present paper proposes a new variation of PSO model where we propose a new method of introducing nonlinear variation of inertia weight along with a particle's old velocity to improve the speed of convergence as well as fine tune the search in the multidimensional space. The paper also presents a new method of determining and setting a complete set of free parameters for any given problem, saving the user from a tedious trial and error based approach to determine them for each specific problem. The performance of the proposed PSO model, along with the fixed set of free parameters, is amply demonstrated by applying it for several benchmark problems and comparing it with several competing popular PSO and non-PSO combinatorial metaheuristic algorithms.     

Using mega-fuzzification and data trend estimation in small data set learning for early FMS scheduling knowledge

Provided with plenty of data (experience), data mining techniques are widely used to extract suitable management skills from the data. Nevertheless, in the early stages of a manufacturing system, only rare data can be obtained, and built scheduling knowledge is usually fragile. Using small data sets, this research's purpose is improving the accuracy of machine learning for flexible manufacturing system (FMS) scheduling. The study develops a data trend estimation technique and combines it with mega-fuzzification and adaptive-network-based fuzzy inference systems (ANFIS). The results of the simulated FMS scheduling problem indicate that learning accuracy can be significantly improved using the proposed method involving a very small data set.     

具有有界扰动的奇异摄动系统鲁棒稳定性

对于高频寄生、外部扰动及高频参考输入共存的奇异摄动系统进行了鲁棒性稳定性研究．为了得到较小的残差集，采用新的自适应律作为控制输入的理论法则．利用Lyapunov稳定性理论，给出了误差系统的状态偏差向量、高频变量及失配参数向量的有限上界。结果表明，新的自适应律的引入，得到了更小的参差集，从而增强了系统的鲁棒性与稳定性。     

统计不相关最佳鉴别矢量集的本质研究

对统计不相关最佳鉴别矢量集的本质进行研究，在基于总体散布矩阵特征分解的基础上，构造了一种白化变换，使得变换后的样本空间中的总体散布矩阵为单位矩阵，这样使得传统的最佳鉴别矢量集算法得到的均是具有统计不相关的最佳鉴别矢量集，从而揭示了统计不相关最佳鉴别变换的本质——白化变换加普通的线性鉴别变换。该方法的最大优点在于所获得的最优鉴别矢量同时具有正交性和统计不相关性。该方法对代数特征抽取具有普遍适用性。用ORL人脸数据库的数值实验，验证了该方法的有效性。     

船用水泵机组的隔振设计与动态特性分析

根据某船舶设计中提出的减小机械设备的振动传递、降低水下噪声的要求,针对该船舶的水泵机组所具有的特点,进行了隔振浮筏的设计.通过有限元分析软件ANSYS,建立起水泵机组浮筏系统的动力学模型,计算分析了浮筏筏体的振动模态以及整个隔振系统的传递特性,探讨了提高隔振性能的方法,从而改进了设计.文中将计算分析结果与实测试验结果进行了比较,讨论了影响计算精度的若干方面,得出了一些有意义的结论.     

Mandelbrot集内部结构

对传统的Mandelbrot集计算机生成算法提出了两种改进方案，其一是增加了算法内循环中的测试功能；其二是在复平面上对算法内循环中的点进行重复计算。通过改进方案获得了与传统算法生成的图形明显不同的Mandelbrot集图形，更加准确、艺术地描述出了Mandelbrot集的内部结构。同时，对分辨率和着色方式对图形艺术效果的影响也进行了探讨，为进一步探索Mandelbrot集内部区域的特征提出了一种有效的方法。