计算代价

However, these algorithms are based on merging, with high computational cost.

然而它们都是基于归并的，会有很高的计算代价。

That is to utilize general MPI programming environment, program on the NHBL parallel computational model, analyze and predicate the running cost of program by using the cost function of this model, and analyze the scalability of program by using the time-scale scalability metric. Finally, we analyze the numeric algorithm example---matrix multiplication and the nonnumeric algorithm example---PSRS sorting on Dawning-1000 MPP and NHPCC-cluster NOW system by using the integrative method.

提出了将并行计算模型、算法、编程进行一体化的研究的方法，即利用通用的标准的MPI编程环境，将编程建立在NHBL并行计算模型上，并且利用该并行计算模型的评价函数进行分析、预测程序的运行代价，再利用时间比例的可扩放性分析方法来分析程序的可扩放性性能；最后我们用PSRS排序算法和矩阵乘法这两个典型的数值和非数值的算法，在曙光-1000并行机和NHPCC-Cluster工作站集群上进行了一体化的分析。

On clustering the data space into a number of partitions, LBD extracts a distance and a simple bitmap representation called Bit Codefor each point in the database with respect to the corresponding reference point.

位码字符串比较时，按照维度贡献优先顺序，大大加快非候选点过滤。LBD利用特殊的B+树组织，降低I/O和距离计算代价。采用模拟数据和真实数据，实验验证了LBD具有更高的检索效率。

In this paper, a specification method and performance evaluation model of large-scale parallel application systems is advanced, based on modules and their composition.

该文提出了一种基于模块及其组合关系的描述方法和系统执行代价计算模型，它不仅能描述并行应用系统的多范例特征，而且将不同并行范例模块的组合时产生的代价引入模型。

SSPP firstly computes a minimum hop primary path for each connection request, and it follows to compute two SRLG disjoint and minimum cost backup paths for each sub-path on the primary path.

共享子通路保护为每条业务请求计算一条最短的工作路由，并为工作路由上每段子通路各计算两条共享风险链路组分离且代价最小的保护路由。

It is emphasized in this paper that the recomputation under the nonlinear conditions and also with different data dependency in context is the core of solving the problem of the contradiction between cost complexity and spatial cost.

同时本文强调，研究非线性情形下的重复计算以及三种数据相关性(即变量的依赖相关、IO相关和迭代相关)，是有效解决微分模式较高计算时间和空间存储代价难题最为根本的出发点之一。

Because source data is unsteadiness, the changes of data must be spread to materialized view and make it be consistency the changes of materialized view and source data. Otherwise the freshness of data in materialized view will be fall down and the authenticity and consistency of OLAP will be affected. For the maintenance problem of materialized view, an algorithm is presented and it can make the cost of materialized view recomputation be minimized.

由于源数据的不稳定性，其数据的变化必须及时传播到实体化视图中，以保持实体化视图与源数据的变化一致性，否则会降低实体化视图中数据的新鲜度，并影响联机分析处理查询结果的真实性和有效性，针对视图的维护问题，提出了实体化视图的一种维护算法，它将使视图重计算代价最小化。

True friendship consists in being mutually useful in offering one's friend good cheer in distress, sympathy in sorrow, advice in trouble, and material help in times of real need...One who has given his friendship to another gladly foregoes selfish pleasures or self-interest for the sake of his friend's happiness, without consciousness of loss or sacrifice, and without counting the cost.

真正的友谊，鼓舞穷苦的人，同情哀伤的人，指点困境中的人，在饥渴时也能伸出扶持的援手……一个人付出了友爱，会心甘地放弃自私的享乐与利益，并不认为自己失去了什么，或者在做出牺牲，并不计算代价，因为他心里盛满了友人的幸福。

Under the supports of HPC technologies,HPC applications have contributed much to the national scientific innovations,and which have been continuously developed during the interplaying with HPC technologies.

高性能计算相对于理论科学和实验科学，有其独特的优越性。首先，高性能计算既免除了真实实验的昂贵代价，而且不会对环境产生任何影响，即所谓无损伤研究。

The standard Kernel Fisher Discriminant Analysis may suffer from the large computation complexity and the slow speed of feature extraction for the case of large number of training samples. To tackle these problems, a fast algorithm of KFDA is presented.

摘要针对训练样本多时核Fisher判别分析的计算代价大，特征提取速度慢问题，本文提出一种KFDA的快速算法。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。