查询词典 algorithm of euclid

Image matching algorithm which based on directed Hausdorff distance and immune genetic algorithm consists of defining code and adaptive degree function, confirming intercross variation operator and immune operation.

部分Hausdorff 距离和免疫遗传算法相结合的图像匹配算法包括：定义编码与适应度函数、确定交叉变异算子及免疫操作。

Based on this extended directed graph, an algorithm for creating it is proposed, the time complexity analysis of the algorithm is given, and its correctness is proved.

基于这种扩充有向图，提出了一种对象范式生成算法，并给出了算法的时间复杂度分析和正确性证明。

An efficient algorithm PSOKNN is proposed to reduce the computational complexity of KNN text classification algorithm, it is based on particle swarm optimization which has random and irected global search ability to search randomly and directed within training document set.

提出了一种有效的快速k近邻分类文本分类算法，即PSOKNN算法，该算法利用粒子群优化方法的随机搜索能力在训练文档集中进行有指导的全局随机搜索。

And then all directed cutsets from the set of those directed segs were selected by analyzing connectivity of another subgraph. Theoretical analysis and experimental analysis of the algorithm showed that the improved algorithm was feasible and efficient.

算法首先利用边收缩图的概念，递归生成有向装配连接图的具有一个连通子图的一部分有向断集，接着通过判断另一个子图是否连通，从这些有向断集的集合中筛选出全部的有向割集。

On moving base, a new initial alignment algorithm for strapdown inertial navigation system is proposed. In the algorithm, two special inertial frames, the initial-time inertial frame (i0 frame) and the initial-time SINS body inertial frame (ib0 frame), are defined and are selected as calculation reference frames, then, the calculation of initial alignment direction cosine matrix is expanded into three parts:(1) the DCM between i0 frame and the navigation frame will be easily obtained via local geographical coordinates and initial alignment time;(2) attitude updating using gyro samples gets the DCM between SINS frame and ib0 frame;(3) by explaining SINS specific force equation in SINS body frame, the relation between velocity log, accelerometer measurement and gravity acceleration is established to achieve the constant DCM from ib0 frame to i0 frame.

在运载体运动情况下，提出了一种适用于捷联惯导系初始对准的新算法，该算法以惯性空间为参考基准，即建立了初始时刻惯性坐标系（i0系）和初始时刻捷联惯组惯性坐标系（ib0系）两个惯性坐标系，将初始对准姿态矩阵的实现分解为三部分：（1）通过地理位置和初始对准时间求解i0系至导航坐标系的变换矩阵；（2）使用姿态更新算法实时计算捷联惯组相对于ib0系的变换矩阵；（3）通过惯导比力方程变形，获得测速仪辅助测量、加速度计输出和重力加速度之间的关系，从中可以求解出从ib0系至i0系的常值变换矩阵。

Finally, the way of how to compile an algorithm that is programmed by MATLAB into a COM component is introduced, as well as the algorithm of interferometer direction finder.

最后，介绍了如何将MATLAB编写的算法编译成COM组件供应用软件调用的方法，并对使用的相位干涉仪测向算法进行了详细的分析研究，实现了基于COM组件的仿真模块。

The optimizing direction of algorithm parameter is presented through algorithm performance analysis.

通过对算法的性能分析，提出了算法中一些参数的优化方向。

It includes an optimized curve fitting algorithm based on the least-squares method and a surface lofting algorithm in which a interpolation function is employed to provide a continuous variation of the parameter in one direction over the entire lofted surface.

基于最小二乘法，对截面数据进行均方误差下的精确优化拟合；在曲面蒙面算法中，采用插值函数确定蒙面曲面一个方向的参数。

The system parameters are determined by optimizing an output-error cost function. To deal with the non-uniqueness of the fully parameterized state-space system, a projected gradient search algorithm is presented by restricting the update of the parameters to the tangent space to the manifold of observationally equivalent state-space systems. The sufficient condition to employ L-M algorithm for optimizing parameters is also introduced. The proposed hierarchical optimization identificationmethod includes two steps: First, the parameter search direction is determined by the proposed adaptive L-M projected gradient approach; Second, the optimum step size is computed according to a line search method.

通过极小化输出误差目标函数获得了系统参数估计；提出了正交梯度搜索方法用于解决系统参数的非唯一性问题，正交梯度搜索的本质是在输入-输出等价类相切平面的正交垂空间更新系统参数；给出了用 L-M 算法进行参数优化的充分条件；提出的系统参数递阶优化辨识方法包括两步：首先用给出的自适应 L-M 算子正交梯度方法确定参数优化方向；其次由一维搜索方法计算最佳步长。

To obtain the high quality image of discrete phase distribution, the paper puts forward a new algorithm of image reconstruction, which is based on minimum two multiplications and SIRT iterative technique. The experimental results show that the model is reliable, the accuracy of algorithm is higher, the reconstructed image accords with the actual situation, and the quality of reconstructed image is improved.

为获取高质量的离散相分布图像，根据基于约束的最小二乘法和SIRT算法，提出了一种带有最优修正的新的图像重建算法，实验结果证明具有很高的图像重建精度，图像质量得到改善。

Objective:To compare the response control and attention of Schizophrenic patients with that of the healthy controls by Integrated Visual and Auditorycontinuous performance test. To quantitate the impairment of cognitive function in patients, and to explore the relationship between cognitive function and the severity of the disorder.

目的：探讨精神分裂症病人在IVA持续操作测试中的反应控制能力、注意力等，并与健康人进行比较，从而量化精神分裂症病人的认知功能损害，并进一步探讨其认知功能与疾病严重程度的关系。

Main effective factors including subcooling degree, mechanical vibration, gas hydrate reformation, environment temperature, noncondensing gas and surfactant are analyzed.

指出过冷度、机械振动、重复生成水合物、环境温度、不凝性气体、添加剂是影响气体水合物生成的主要因素，还对R152a水合物的放冷进行了实验研究。