构造一个合适的代价模型对查询计划的选择有着十分重要的影响。
Constructing an appropriate cost model has important effect on selecting a query plan.
同时给出了查询代价视图选择问题的代价模型和实视图选择的过程。
In the meantime, the cost model of the query cost view selection problem and the process of materialized views selection are presented.
针对各种交通信息的实时更新，提出了最优代价模型以实现真正的最优路径规划。
Considering the real-time traffic information updated, optimal cost model is proposed to realize the optimal route planning.
本文给出了空间数据仓库的代价模型，并在此基础上提出了一种视图的动态选择算法。
This paper presents the Dynamic View Selection Algorithm based on Cost Model of spatial data warehouse.
给出了一个新型的代价模型，它比传统的代价模型更多地考虑了资源发现代价和资源决策代价。
A new cost model is given, considering resource finding cost and resource deciding cost beyond traditional model.
第一种是社区最短路径模型，第二种是社区最小代价模型，第三种是引入概率的最小代价模型。
The first one is community model based on shortest path, the second one is based on least cost by introducing a turn penalty, the last one is community model based on probability and turn penalty.
在一般的假设条件下 ，我们应用性能势的基本性质直接建立了无限时间水平平均代价模型的最优性方程 ，并且证明了在紧致集上最优解的存在性 。
Under a general assumption, we establish directly the optimality equation for infinite time horizon average cost model and prove the existence of optimal solution in a compact action set by using p.
相反，如果花点时间确定对象模型中稳定的关系，那么可以用最小的代价派生出更稳定的词汇表。
In contrast, if you take a moment to identify the stable relationship in your object model, then you can derive a more stable vocabulary at minimal cost.
格鲁伯已花费数年建立这样一个模型，它的维持和更新都花费了相当大的代价。
Gruber has spent years developing such a model, which is maintained and update at considerable expense.
但是研究表明这些隐式模型是多么的不完善，而且我们也开始体会到它们的代价。
Research has shown how faulty these are, though, and we're beginning to understand their costs.
尽管很明显，数据库中的空间浪费增加了，但请注意，按照这种策略操作，只需花非常小的代价就可以更新模型。
Notice how very little effort was required to update the model following this strategy, although the obvious problem of wasted space in the database has increased.
现代的处理器在它们的内存模型上有着很大的不同；JMM应该能够适合于实际的尽可能多的体系结构，而不会以牺牲性能为代价。
Modern processors differ substantially in their memory models; the JMM should accommodate as many possible architectures as practical, without sacrificing performance.
标记的可伸缩性优点的获得以避开同源策略安全性模型为代价，可能导致易于收到攻击。
The scalability benefit of the tag comes at the cost of sidestepping the Same Origin Policy security model, introducing potential attack vulnerabilities.
人们按照task任务表现和感情状态来研究打扰的消极影响，甚至创建模型来预测打扰的代价。
People have studied the negative effects of interruptions in terms of task performance and emotional state, and have even created models to predict the cost of interruptions.
除此之外，可运行的UML将会使你可以在你开始着手不惜代价的细分你的需求之前，确认你前面的模型。
In addition, executable UML will allow you to validate your models up front, before embarking on costly refinement of your requirements.
既然模型是可执行的，它就可以在实现可用之前被检测，这就可以节省时间，避免令人沮丧地付出高昂代价而返工重来。
Since the model is executable it can be checked before the implementation is available, which can save time, frustration and costly rework.
他认为要想处理足够的模拟来获取可能的有意义分配就必须使用删减版模型。 只是这些模型虽然迅速可代价很高。
To run enough simulations to get a meaningful distribution of possible results, he said, it's necessary to use stripped-down versions of these models.
避开等式和模型的力量是有代价的。
采用自由空间模型，通过控制探测数据的扩散范围，引入路径代价函数实现能量的高效利用。
By controlling diffusion of exploratory messages and making use of cost function, the energy consumption can be more efficient in free space model.
定义了基于代价分析的防御决策模型，并提出了一种基于谓词逻辑的防御知识表示方法。
Define the model of decision-making about defense based on cost analysis and providing an expression of defense knowledge based on predication logic.
提出了一种基于最小代价的广域网存储虚拟化的动态副本管理模型。
A new dynamic replication model base on minimal access cost to implement storage virtualization in wide-area network is introduced.
作为代价，描写系统的模型限制是无环的。
The model describing system is restricted to be acyclic at a cost.
它支持模型说明，自动实现模拟过程以降低模拟系统实现代价。
It supports model specification and can construct simulation procedure automatically with less cost.
基于此，通过对网络数据备份的基本流程进行分析，提出一个基于数据量变化率函数的备份代价评估模型，并给出初步的量化公式。
By analyzing the key procedure of data backup, a model of data backup cost was put forward and the computing formula accordingly was given.
实际上这可能是由于市场上绝大多数的人体模型（人偶）的代价引起的，很少有练习者能真正的能够拥有一个。
This is partially due to the cost of most dummies on the market today. Very few practitioners can actually afford to own one!
最后，综合流程的执行代价和泳道的均衡度，从层次泳道化模型中选择最优者为最终的业务流程建模。
At last, the execution cost and lane equilibrium were integrated, the best one from the leveled lane models was selected as the final business process.
建立了基于代价函数的传感器分配优化模型，其中代价函数包括跟踪系统偏差代价和资源消耗代价两部分。
The optimal sensor allocation model based cost function is built, and the cost function includes the bias of tracking state and resource consumed.
从系统有效度和系统代价出发提出了一种多传感器冗余系统的优化模型和满足有效度约束的最小代价准则。
An optimization model for the redundant multi sensor system and the criteria with a minimum cost which fulfill the systems availability constraint are presented.
我们建立的模型在较低的代价下获得了较好的性能，便于实时观察与处理。
We have established the model at a lower price under a better performance for real-time observation and treatment.
我们建立的模型在较低的代价下获得了较好的性能，便于实时观察与处理。
We have established the model at a lower price under a better performance for real-time observation and treatment.
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