查询词典 parallel algorithm

The main contributions include:(1) Energy conservation law of Haar wavelets transform is proved to compress data streams.(2) The relation between the coincidence measure and trend of streams is revealed as along with the invariability under parallel shift and the equivalence law over coincidence measure to approximately express data-streams by the wavelet coefficient of the characteristic stream and its energy.(3) Multi-Scales energy decomposition model is proposed to improve the compression precision.(4) The multi-scales compression algorithm and the energy conservation reconstruction algorithm are designed.(5) Extended experiments show that the compression ratio of the new methods is 2~4 times as the traditional method.

主要研究成果包括：(1)证明了Haar小波变换服从能量守恒规律，并用于压缩数据流；(2)揭示了数据流的偶合度与变化趋势的相关性、偶合度的平移不变性及等价规律，采用特征流序列的小波系数和流能量近似表示流的趋势，达到压缩的目的；(3)提出了多尺度能量分解模型，提高了表示精度；(4)设计了多尺度能量分解压缩算法以及多尺度重构算法；(5)在真实数据集上的实验表明，新方法的压缩比是传统小波方法的2～4倍。

The domain decomposition parallel iterative algorithm for the 3-D time-dependent neutron transport difference equation is presented in Chapter 5. This algorithm is highly parallelizable and scalable.

第五章研究了基于几何空间区域分解的三维非定态中子输运差分方程的并行迭代算法，该算法达到了多处理机并行的高并行度和可扩展性。

The problem of huge numbers of datas are disposed in the process of disposed three-dimensional laser scanning datas, so on the base of carefully analszing the serial algorithm of plane segmentation and multiple datasets registration in the process of disposing three-dimensional laser scan datas, according to the method of parallel programming basing on MPI, the paper used the right means of datas distributing to design and realize the parrel algorithm of plane segmentation and multiple datasets registration.

本文针对三维激光扫描数据处理过程中所处理的数据量大这一问题，在认真分析了三维激光扫描数据处理过程中平面分割和多视点配准串行算法的基础上，根据基于MPI并行程序设计方法，采用合适的数据分配方案，设计了平面分割和多视点配准的并行算法，并给出了效果图，以及并行算法加速比和效率的实际数据，最后对并行算法效果进行了分析。

By studying the parallel model of DDS, the concept of maximal separated task-set, the primary scheduling algorithm and the general scheduling algorithm are presented.

提出了极大空间相容组的概念，并给出了全局调度算法和该算法可行的条件。

Firstly, the random walk problem is introduced and the solution is schemed out theoretically. And then, the equivalent RC circuit for thermal analysis is discussed as the IC package is divided into many small blocks at the desired level of granularity. The techniques of analyzing the equivalent RC network by random walk algorithm are then discussed. At the same time, an equivalent model for thermal analysis is set up according to an IC chip. The proposed method is then applied to this model for both steady and transient analysis. Two speedup strategies, pseudo parallel walking and walk results reuse, are proposed sequentially to improve the algorithm performance.

首先简述随机行走问题的基本概念，给出问题的理论解法；然后讨论基于三维网格划分的IC芯片热等效阻容网络模型，着重分析随机行走算法在热等效模型中的应用，并建立一个实际芯片的热等效模型，采用随机行走算法模拟计算模型的稳态温度分布和瞬态温度变化；最后针对随机行走算法应用中的不足，提出了伪并行行走和结果重用2种加速技术。

In Chapter 2 the foundamental principle of GAs is introduced and the mathematic background of GAs is discussed. Then, a genetic algorithm based on non-Abel group theory and a parallel genetic algorithm based on supercube computer system are proposed.

遗传算法广泛地应用于函数优化和组合函数优化问题，然而如何改善其性能，提高收敛效率，仍然是当今遗传算法研究界的重要课题。

TRI P+P algorithm also uses improved parallel star algorithm for the tristate elements to reduce unnecessary fault simulation events.

另外，为了提高故障模拟器的效率，在TRI P+P算法中还引入了改进的并行星算法应用于三态元件。

In Chapter 2,encoder structure,decoder structure and interleaver of parallel concatenated Convolutional code and serially concatenated Convolutional code are studied. Symbol-wise SISO algorithm and bit-wise SISO algorithm are given.

在第二章中，系统分析了并行级联卷积编码和串行级联卷积编码的编码结构、交织器的类型、译码结构以及基于符号和基于比特的SISO算法。

C Introducing immunity theory into parallel genetic algorithm has double functions. One is that immune selector proposed in this dissertation can prevent algorithm from premature effectively.

引入免疫功能具有双重作用，一是由本文给出的免疫选择操作可有效防止早熟，二是通过基于免疫记忆的子群体信息交换策略可加速收敛；d。

The pseudo parallel genetic algorithm is applied to the optimization of PID controller's parameters.It overcomes the premature phenomenon that often appears in the general genetic algorithm in some extent and the convergence speed is improved.

在对PID控制器参数优化中引入了伪并行遗传算法，在一定程度上克服了常规遗传算法容易产生的&早熟&现象，收敛速度也进一步提高。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。