查询词典 algorithm

The method of obtaining time delay parameters with the reverse access channel is discussed. The modified algorithms of classic correlation methods of TOA estimation are proposed. Noncoherently combining algorithm and group coherent combining algorithm are given. They decrease the computational complexity and are more suitable for implementations in practical systems. The leading edge detection algorithm is proposed to mitigate the effect of multipath in TOA estimation. Then the secondary search method is proposed, it can solve the matching issue of PN code in CDMA systems. The location algorithms based on LS are discussed; include circular trilateration with LS, hyperbolic trilateration with reference differencing, hyperbolic trilateration with sequential differencing and circular trilateration with TOA differences. The design and implementation of wireless location system based on TOA/TDOA in CDMA2000 systems are given. The location process is discussed, and the hardware and software implementation of TOA estimation are given. Finally, the wireless location system which uses TOA estimation and LS location algorithms above is tested in the real environment.

文中讨论了采用CDMA2000反向链路中的接入信道来获取时延的方法和过程；对TOA估计的传统的相关法进行了改进，提出了非相干合并相关法和分组合并相关法，减少了基于相关的时延估计算法的运算量，提高了算法的实用性，对算法进行了仿真和性能分析；采用边缘检测技术有效减少了TOA参数估计中的多径干扰，提高了时延参数估计的准确度；提出了一种TOA估计的二次搜索法，解决了多个定位测量单元同时进行TOA估计的PN码匹配问题，进一步了提高TOA估计的精度；在采用时延值的定位算法中引入了基于LS的圆周法、基于参考差的双曲线法、基于相邻差的双曲线法和基于TDOA的圆周法，讨论了各算法的应用条件，进行了算法性能的仿真分析；给出了CDMA2000系统中的TOA/TDOA的无线定位的系统方案和实现流程，并对TOA值估计算法进行了软硬件实现，还对采用TOA估计算法、LS定位算法和定位系统设计方案实现的定位系统的进行了现场定位性能测试。

The algorithm uses the RF packet only to obtain the distance differences between unknown node and beacon nodes. Then the algorithm figure out the node"s coordinates by the improved trilateration to implement the long distance, controllable accuracy, low-cost localization. Second, this paper proposes a distributed Kalman algorithm to optimize the TDOA"s error.

算法的基本思路是直接利用无线通信模块的射频分组求得未知节点到各个信标节点的距离之差，然后利用改进型的三边定位法计算出节点的坐标，对节点实施远距离、精度可控、低成本的定位。

To solve complex computations in three-dimensional interpolation algorithm, a fast and practical algorithm of scattered space lattice and the Warp algorithm with proper depth are studied.

为解决三维内插中庞大的计算量，本文研究了快速而实用的散点算法和深度适应的Warp算法。

A smooth approximation algorithm is then proposed based on hinge-finding algorithm via curved faces approximated to the hinging hyperplanes model, which can obtain a smooth approximation result and hold some good properties of hinge-finding algorithm such as simplicity and effectiveness.

本文对找链接算法做了两点改进，其一是扩充了链接超平面模型，在二维空间上弥补了链接超平面模型表示能力不足这一弱点。仿真实验显示使用扩充后的模型得到了更好的分片线性逼近结果。另一点改进是使用双曲光滑函数构造出了基于找链接算法的光滑逼近算法。理论分析证明了算法的可行性。仿真实验验证了理论分析。

It generalized the traditional k-means algorithm from the point of view of prototype selection. In detail, the kPC algorithm substituted hyperplanes for points used in k-means algorithm to be the prototypes and got these hyperplanes by minimizing the sum of the squared distances between each point and its closest hyperplane.

它从原型选择的角度推广了传统的k-均值算法，用超平面替代k-均值算法中的中心点来表示聚类原型，并通过最小化样本点到最近中心超平面平方距离之和来求取原型超平面。

The results of computations demonstrate that the path relinking algorithm can obtain better solutions than the standard genetic algorithm, the standard Tabu search procedure and the general path relinking algorithm, and prove that the solution update method of the reference set with diversification detection is very important to path relinking. Moreover, the decentralization mutation strategy can enhance the capacity of searching a better solution.

计算实例表明，该路径重连算法比标准遗传算法、标准Tabu搜索算法以及普通路径重连算法能够获得更好的解，证明了多样性检测对参考解集更新的关键作用以及分散性解变异策略在提高解的质量上的能力。

ehta algorithm of artificial intelligence is the heuristic search theory analysis and improvement, and design of a suitable timetabling algorithm, it contains a side strategy, choosing bad strategy, tactics, learning strategy prospects detection, etc. ehta algorithm used in universities in system, reduce artificial intervention, reasonable arrangement of course, teachers and balanced class teacher of load on the good effect, can greatly improve the efficiency of course.

ehta算法是对人工智能中的启发式搜索理论加以分析和改进，设计的一种适用于高校排课的算法，它包含了靠边策略、择劣策略、前景探测策略、学习策略等内容。ehta算法应用在高校排课系统中，在减少人工干预排课次数、科学安排教师、均衡班级和教师的日负荷等方面起到了良好的效果，大大提高了排课效率。

The algorithm is implemented by a three-stage iterative process. At the first stage, an iterative block matching algorithm is applied to generate more accurate initial disparity vectors, and at the second stage, an iterative polygon matching algorithm is employed to optimize the initial disparity vectors obtained at the first stage to minimize the error of certain triangulations. Finally at the third stage, the unreliable nodes are deleted.

该方法是一个三步迭代过程：首先利用迭代块匹配算法得到较精确的匹配结果；然后利用迭代多边形匹配算法对得到的匹配结果进行优化，使得一些三角形的预测误差最小；最后删除掉视差不可靠的节点。

Based on analyzing the algorithms of Delaunay triangulation creation in domestic and abroad, in view of the situation of building DTM and the need of realizing railway 3D visual design, a divide-and-conquer algorithm to build DTM is presented, the algorithm use square grids to manage disordered points, to form triangular meshes in grids, DTM can be obtained by merging the triangular meshes, so that the work of sorting of the disordered points before building DTM is reduced greatly; moreover, the algorithm utilize subarea to control the vertices of convex hull so that the range which support points locate in can be predefined when searching support points, the workload of searching support points can be reduced and the speed of merging two triangulations is raised.

在分析了国内外构建DTM算法的基础上，针对DTM算法的现状及铁路线路三维可视化设计的需要，创立了一种构建DTM的分治算法。算法引入方格网管理离散点数据，在格中构建三角网，然后再将这些三角网合并形成DTM，极大地减少了构网前对所有参加构网的离散点进行排序的工作量。此外，通过对凸包顶点数据进行分区管理，在搜寻凸包支撑线时，能预先确定出支撑点的范围，减少了搜索工作量，提高了三角网的合并速度。

This paper introduces TSP firstly,and then discusses the six effective methods generallyGenetic algorithm,Ant Colony algorithm,Hopfield Neural Network,Simulated Annealing algorithm,Artificial Immune alg...

文章介绍了什么是TSP，论述了目前求解旅行商问题较为有效的六种智能算法(遗传算法、蚁群算法、Hopfield神经网络算法、模拟退火算法、人工免疫算法、混合优化算法)，并简单阐述了其优缺点，给出了未来针对TSP问题的研究重点。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新