While Knuth has justly warned that "premature optimization is the root of all evil," the whole point of an index is to find information fast, so this column addresses performance issues as well.
尽管Knuth曾经忠告我们：“不成熟的优化是问题的根源”，但索引的目的在于快速地找到信息，因此本专栏同时也将讨论性能问题。
The drying mechanism and technology optimization of spray drying are generally studied by experiments. And spray drying lacks theory research, which affects its technical economic index.
喷雾干燥技术的机理及工艺优化常常只能采用实验的方法来分析和探讨，缺乏理论研究，影响了喷雾干燥的技术经济指标。
If no index is found, then there are no cached tweets, so there is nothing to show and no optimization can be made on the query (and you return a value of 0 to indicate this).
如果没找到任何索引，那么就没有缓存的tweet，所以就没有展示的东西，并且没有可对查询进行的优化(您返回一个0值以指示这一点)。
Optimization results in the merging of many of the Lucene index files into a single file.
优化会导致多个Lucene索引文件合并成一个单一文件。
The test, calculation and optimization are carried out for various coals and the reasons caused different performance index of them are analyzed.
通过对多品种煤进行化验、计算和优化，分析了其特性指标之所以差异很大的原因。
As the target function of the optimization model, the system entire efficacy was calculated by power index and fuzzy weight methods.
采用幂指数法结合模糊权重评价法计算系统总体效能，并以此作为优化的目标函数。
An improved particle swarm optimization (PSO) algorithm was designed. And a weighted ITAE index of turbine speed error was taken as the fitness function of the improved PSO algorithm.
提出了一种新的改进的粒子群优化算法，并以水轮机转速偏差的加权ITAE指标作为改进粒子群优化算法的适应度函数。
Based on analysis of the current processing condition of the HIS of Shaanxi People's Hospital, focuses on the optimization strategies of the system index and its realization.
在对陕西省人民医院HIS系统运行情况深入分析的基础上提出了对系统索引优化的策略，并在系统中实现。
The construction of evaluation index system is complex system engineering, and optimization is an important step of it.
评估指标体系的构建是一个复杂的系统工程，优化是其中重要的一步。
Based on the physical meanings of structural reliability index, the optimization model of flood discharging risk is established in this paper, and the global PSO is introduced to solve the model.
基于结构可靠度指标的物理含义，建立了水库泄洪风险计算优化模型，并引进了粒子群全局优化算法对该模型进行求解。
In the transformation and optimization of ring cooler, the air leakage ratio is an important index for the design department and quality technology department.
在对环式冷却机的改造和优化设计过程中，漏风率也是设计部门和质量技术部门参考的一项重要指标。
Based on the simulation and optimization, a quality index of the sintering part is presented, through which the contribution of each process parameter is evaluated.
在模拟优化的基础上，提出了评价工艺参数对加工件质量的影响指标。
During the optimization process, the index with the integral of the squared error (ISE) was adopted.
在优化过程中采用了偏差平方积分(ise)的优化指标。
Then find the projection value which can optimize the projection index function via the whole optimization characteristic of AGA.
然后利用遗传算法全局寻优的特点，寻找出使投影指标函数达到最优的投影值；
Two kinds of optimization logic model of sintering process are put forward after analyzing the relation of mix ore scheme, process parameters and product quality index of Baoshan iron plant.
在分析宝钢烧结配矿方案、工艺参数以及产质量指标三者相互关系的基础上，提出了两种优化烧结工艺参数的数学逻辑模型。
Evaluation and selection of conceptual design schemes are of importance in the procedure, so the index system of evaluation is built and then fuzzy optimization based decision model is discussed.
并以开发过程中产生的产品概念设计方案集为对象，建立了评价选优的指标体系和基于模糊优选理论的决策模型。
Finally, in combination with the road test data statistic index system analysis verified under common implementation effect of optimization.
最后，在结合路测数据与系统统计指标分析下共同验证了优化实施的效果。
Accessibility is to evaluate logistics system function index, it is the main target of logistics system optimization, also be logistics service level with Hugh embodiment.
可得性是评价物流系统功用的指标，是物流系统优化的首要目的，也是物流效劳程度的具休表现。
Based on the geometric meaning of the reliability index, the optimization method for the reliability computation is constructed, and the correlated abnormal distribution random fields are addressed.
对非正态分布、相关变量随机场进行了处理，依据可靠指标的几何意义建立了可靠度计算的优化算法。
From the macroscopic point of view, the necessity of improving and optimizing the iron concentrate grade index, the potential technical ways and the thought on optimization study are described.
从宏观角度出发，阐述了提高和优化铁精矿品位指标的必要性、技术途径及优化研究的思路。
After analyzing the shortcoming of existing methods on determining the index weight, a method is presented on the basis of ideal optimization scheme.
简要分析当前指标赋权法的优缺点，给出一种利用理想最优方案计算指标权重的方法。
According to the principle of slotting optimization, an index system is proposed for choosing proper program.
根据货位布局应遵循的原则，建立了选择方案的指标体系。
On the basis of the different optimization index, different combinations of optimal-dose herbs of WD can be obtained.
根据各指标的检测结果，优化的乌头汤不同剂量组合并不一致。
By the effect of the optimization of Bus Scheduling, this paper bring forward evaluation index model to evaluate optimization results, and give the corresponding algorithm of the model.
针对公交运营调度优化的效果，提出了评价优化效果的评价指标模型，并给出该模型相应的算法。
The program optimization of a hydropower project, hard to be chosen directly, is a system project with multi-attribute, multi-factor and multi-index.
水电站工程方案优选是一个多属性、多因素、多指标的系统工程，难以直接选择。
METHODS the optimization extractive technology of Xuanfeiqing granules was investigated using orthogonal design with the availability component extracting from the drug as the index.
方法采用正交设计法，以水醇两组提取物中有效成分黄芩苷提取率和水饱和正丁醇提取物为指标，确定提取参数。
To solve the ground weapon network optimization problem against small object of low altitude, a new evaluation index system was proposed based on the concept of direction probability.
针对反低空小目标大组网系统的布阵问题，提出了一种基于方向概率的评估指标体系。
Conclusion the reliability of index system of TCM clinical therapeutic research protocol optimization is high.
结论中医临床治疗性研究方案优化指标体系具有较高的信度。
Conclusion the reliability of index system of TCM clinical therapeutic research protocol optimization is high.
结论中医临床治疗性研究方案优化指标体系具有较高的信度。
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