查询词典 iterative method

An automatic algorithm was used in the analysis to identify clusters of groupings of patients. We used the classical unsupervised clustering method called the Iterative Self-organizing analysis technique of DATA analysis originally introduced by Ball and Hall.25 The technique allows the splitting and merging of clusters while trying to find the "best" configuration. It therefore, requires very little a priori knowledge about the data and predefining the possible number of clusters or groups is not required. The range of possible minimum and maximum number of clusters within which the algorithm can search for an optimal configuration was determined by a procedure called the chainmap which reorders the multidimensional data in the form of a 2D distance map.26 A patient vector is randomly selected and its nearest neighbor is identified as that with the shortest distance between the 2 patients' vectors.

使用自动算法来分析鉴别患者组的聚类，我们使用经典的最初由Ball和Hall提出的的非监控聚类方法，该技术允许在寻找&最佳&形态使对聚类进行拆分和组合，他不需要对数据专门的知识和对聚类或群的可能数量进行预设，在聚类可能的最大和最小范围内，算法可以通过一个叫Chainmap的程序寻找最理想的形态，该程序记录了来自2D距离图的多维数据。

Based on the modeling theory of the equivalent probability density error model(marked as "Tepdem") and the numerical algorithm,this paper provides an approach on how to ascertain a point location with the highest coordinates precision between both of the adjacent characteristic points on a generic curve accurately by use of the theory of function extremum as well as the iterative algorithm,and it also provides the method on how to obtain the least width of "Tepdem" exactly,from which,the explanation of geom...

基于等概率密度误差模型建模原理和数值算法，运用函数极值理论和迭代方法来求解平面一般曲线上两相邻特征点间位置精度最高的点，以精确确定误差模型的最小带宽，从理论上给出等概率密度误差模型的几何特征，从而进一步完善矢量GIS的位置不确定性理论。通过实例计算与可视化分析，验证了理论推导的正确性。

In this paper,the new method used to get the section resistance coefficient K is presented,the iterative procedure is established to calculate the internal forces of arch bridge with flat hinge joints,and the computational example is given.

针对这种情况，提出了确定平铰截面抗力系数K的新方法，建立了计算平铰拱桥内力的迭代算法，并进行了实例计算，研究结果表明，这一方法对具有任意个平铰、任意形状截面的拱桥结构是适用的。

In this paper, the new method used to get the section resistance coefficient K is presented, the iterative procedure is established to calculate the internal forces of arch bridge with flat hinge joints, and the computational example is given.

例如无铰拱或双铰拱模型算法[1 ] ，当拱趾上缘出现裂缝时，按设计规范，在截面偏心距不超过规定值时，可保持拱趾受力状态不变，而考虑材料的塑性进行&应力重分布&计算。

By linearizing the estimation model, an iterative solution of the roll angle can be achieved by means of least square method.

对估计模型进行线性化处理后，可利用最小二乘法来迭代求解滚动角。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了