查询词典 algorithm of euclid

The resemblance between SVM and covering algorithm is analyzed and the algorithm of structural learning based on sphere covering in characteristic space is brought forward.

在商空间理论的指导下，本文提出覆盖领域溶合的概念，并给出领域的最大值融合和组合优化溶合的具体算法。

This article focuses on the line-line, line-region and region-region topological relations algorithm, which come down to the same question: whether there are intersections between line and line. The sweep-line algorithm was studied by many people, but has some deficiencies to be improved, in order to handle some special cases and increase program efficiency. My works as follows: rectangular envelope to reduce executive times , vector cross multiplication to determine intersection between line and line, coordinates and slope method to deal with some special cases. C program examples are showed together.(5) Finally, to prove capability and efficiency of the model and calculation method, some test systems are developed. For example, complex spatial topological relation query, parcels' exact area with the area of linear object reduced in land use, quality inspection to cadastral data according to topological rule, spatio-temporal change query of cadastral data.

将线线、线面、面面之间的拓扑关系实现的算法归结为线与线之间求交的基本问题；为处理一些特殊的拓扑关系情况，提高扫描线算法的效率，探讨了包络矩形粗滤、判断线线是否相交的矢量叉乘法、线节点重合或共线的斜率坐标判断法等改进方法；同时还设计了一种新的节点微小圆求交的算法，可应用于图斑与线状地物细分拓扑关系及地类面积的计算；（5）本文设计了实验系统，包括复杂对象的拓扑关系表达与计算程序、图斑地类面积的计算程序、基于空间拓扑关系规则的地籍数据库质量检查功能，以及时空拓扑关系和变化语义分析等原型，验证了拓扑关系表达模型和计算方法的可行性和实用性。

Simulation results show that DS-JET demonstrates better performance in burst blocking probability, network throughput and end to end QoS provision.4 A testbed based on label switching for OBS network is demonstrated for the first time in China, and its network architecture and especially core router architecture are discussed, with emphasis on resource scheduler, optical cross-connect and system control/management module which provide a research platform for assembly algorithm, scheduling algorithm and routing/signaling protocols respectively.

该试验网络的各项性能和第一期OBS试验平台相比都有所提高。该试验网络不仅有助于研究OBS网络的协议算法，也为今后的光网络研究提供了一个通用的可扩展平台。4。针对OBS试验网络进行了一系列的实验。

RSA algorithm is an influential public-key encrypt algorithm at present, which can resist almost all cryptogram attack as yet.

RSA算法是目前较有影响的公钥加密算法，它能够抵抗目前已知的大部分密码攻击。

Based on these characteristics it raised how to choose the symmetric cryptograph algorithm and non-symmetric cryptograph algorithm.

接着研究了适合数字加密电话通信系统的密钥产生和管理办法，对传统的密钥管理方法做了改进。

Secondly, by the P-L estimation of survivor function, this paper proposed the regression models of polynomial cumulative hazard function distribution models, respectively in the case of complete date and random right censoring date; meanwhile generalized least squares estimations of unknown parameters were proposed respectively using two steps algorithm and principal component analysis algorithm.

与已有的关于多项式危险函数模型的研究成果相比，首先本文在统计模型的构造上充分考虑了累积危险函数乘积限估计量的非独立性，给出了协方差矩阵的估计；其次在模型检验方面，本文利用非参数回归分析方法，充分利用了数据本身的信息，减少了对回归关系假定的主观因素，因而分析结果更为可靠。

This algorithm mainly includes two stages: First a group of solutions were obtained which approximate the global optimum through cursorily adjusting the genetic algorithm.

针对遗传算法与神经网络结合方式中存在的早熟收敛、泛化能力弱等问题，提出一种交替使用遗传算法和玩Levenberg-Marquardt算法优化神经网络的混合学习算法。

Aiming at the limitation of this algorithm,the universal cut-and-try algorithm is put forward.The complexities of macroscopic traffic volume and GDP time series are calculated,respectively.The results show:the complexity of GDP has a positive correlation with the complexity of freight traffic volume;the influence of the complexity of GDP on the complexity of macroscopic traffic volume is long-term with lagged effect;and the correlation between GDP and macroscopic traffic volume has an uncertain relation with the correlation between their complexities.

通过计算宏观交通量与GDP时间序列的复杂度，得到简单结论：GDP复杂度与货运交通量复杂度具有较强的正相关关系；GDP复杂度对宏观交通量复杂度的影响是长期的，具有滞后效应；GDP与宏观交通量现象的相关程度与二者复杂度的相关程度没有必然的联系。

Considering both the survivability and traffic grooming in WDM mesh networks, in this paper,we propose a traffic grooming algorithm based on fault- aware and layer the network structure on basis of cycle cover algorithm.

本文综合考虑网状网生存性及业务量疏导，基于圈覆盖算法对网络进行分层，使网络结构产生分簇，提出了一种基于故障感知的业务量疏导算法，并对算法进行了仿真分析。

Through study of cyclic active database rule sets and analysis of triggering graph and activation graph, we present the concept of united formula and the algorithm to determine termination of a rule set corresponding to a cyclic triggering graph. We also present the time complexity analysis of the algorithm.

我们针对有环时的规则集的终止性进行了研究，通过对触发图、活化图的分析，提出了联合公式的概念，在此基础上给出了判定有环触发图对应的主动规则集的终止性算法，并给出了时间复杂度分析。

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。