Rather than strive for optimization of any function, a large system can only survive by "satisficing" (making "good enough") a multitude of functions.
与其费劲将任一功能做到最优,不如将多数功能做到"满足"(使“恰好”),这才是大型系统的生存之道。
How to process user defined functions incorporated in declarative query languages efficiently is an important aspect of query optimization.
如何高效地处理说明性查询语言中嵌入的用户自定义函数,是查询优化的一个重要内容。
Finally, the algorithm is tested by three test functions of numerical optimization. The emulational experiment results show that this improved algorithm has greater probability of convergence.
最后,用数值优化中的三个测试函数对该算法进行测试,仿真实验结果显示该算法可有效地提高算法的全局搜索能力。
With the model, the cross sectional shape of a pressing is analyzed, and the public feasible zone of sectional angle is determined, and a group of target functions are created as optimization objects.
利用该模型对冲压件截面形状进行了分析,确定了截面转角的公共可行域,并建立了一组目标函数作为优化对象。
Although time spent and number of calls are usually the most valuable bits of data, looking more closely at how functions are being called might yield other optimization candidates.
虽然花费时间和调用次数通常是数据中最有价值的点,还是应当仔细察看函数的调用过程,可能发现其它优化方法。
The problem is decomposed into a two-level optimization problem by constraints substitution introduction of functions of batch sizes and relaxation of material balance constraints.
通过约束变换、引入操作批量的函数和松弛物料存贮能力约束,将调度问题分解为一个两层次的优化问题。
Rather than assuming which functions or operations are slow, profilers ensure that optimization time is spent on the slowest areas of the system that affect the most browsers.
性能分析工具确保优化工作花费在系统中最慢,影响大多数浏览器的地方,而不是去判定那些函数或操作缓慢。
Optimization techniques are being applied to solve the problems of surface interpolation, approximation, smooth joining and fairing, aiming at corresponding goal functions.
只要选用相应的目标函数,曲面插值、逼近、拼接和光顺都可以使用优化技术统一处理。
This paper proposes a direct search algorithm for global optimization and multi-peak searching of functions with boundary constraints.
针对边界约束函数全局最优化和多峰寻优问题,提出一种直接搜索算法。
The system combines flood forecasting, power generation optimization, data reorganization and many functions so on and can make joint dispatching of cascade hydropower stations.
该系统集成了洪水预报、水库调度、发电优化、数据整编等各方面功能,并可进行梯级电站联合调度。
Centrifugal and axil ventilating fans are optimized by using different objective functions, different variables of design, different constraint forced conditions, different methods of optimization.
本文对离心式及轴流式通风机采用不同的目标函数、设计变量、约束条件和优化方法进行优化设计。
The paper describes the functions and the mathematical principle of the synthetical program for railway curve lining optimization calculation.
阐述了铁路曲线拨正优化计算综合程序的功能和数学原理。
Extremum problem of multimodal functions is a difficult issue in optimization fields.
多峰值函数的极值问题一直是优化领域中的一个难点和热点。
The article indicated that the matching and optimization of parameters between the parts of electrical driving systems have important functions for elevating the quality of electrical bicycle.
指出,电驱动系统各部件之间的匹配和优化对于提高电动自行车的质量有着重要作用和意义。
This software has functions of graphic editing, network topological analysis, power information database management, power flow calculating, power loss and reactive power optimization analysis.
该软件具有图形编辑、网络拓扑分析、电网信息数据库管理、潮流计算、电能损耗计算和无功优化分析等功能。
The method integrates optimization of fuzzy control functions and on-line self-tuning of domain in fuzzy control system, which can largely improve qualities and adaptabilities of the system.
该方法将模糊控制函数的优化和模糊控制系统增益自适应调整集中于一体,可大大改善系统的品质和适应能力。
This article studies the basic functions and principals of EIA, the results of optimization the most used hierarchy structure in EIA are provided.
系统地探讨了环评应起的基本作用,并提出了若干原则,优化了在环评中常用的层次递阶结。
In this paper, We prove the existence of a weak minimum for constrained vector optimization problem by making use of vector variational-like inequality and semi-preinvex functions.
本文通过使用向量似变分不等式和半预不变凸函数来证明约束向量优化的弱极小值的存在性。
Evaluating formulae of network functions and their derivatives are introduced in this paper. The algorithm of network analysis and optimization will be more efficient by using these formulae.
本文推导了网络函数及其导数的求值公式,应用这些公式可使网络分析及优化算法更有效。
Goal functions are created for three modulus values separately, and multi-objective optimization problem is solved with the strategy of state-space search.
分别为三率值创建目标函数,并利用状态空间搜索策略解决多目标优化问题。
Based on the theory of solving optimization combination problems by using neural networks, the computational energy functions are united with the penalty functions.
基于神经网络解决优化组合问题原理,将计算能量函数与罚函数有机地进行了统一。
A new evolutionary algorithm based on hybrid crossovers and intermittent mutation for global optimization of complex functions with high dimensions is proposed.
通过混合使用多种杂交算子并辅之以间歇变异,提出了一种求解高维复杂函数全局优化问题的新型演化算法。
As a module embedded in reactive power optimization software, the engine performs the key functions of parsing and processing SQL, data access, data organization and query management.
该引擎作为一个模块嵌在无功优化软件中,主要完成解释执行SQL语句、数据存取、数据组织及查询处理等功能。
Be the adoption of redundancy optimization, self-designed adjustable installation structure of loop coder, redundancy switching and fault warning functions of the loop coder were developed.
采用冗余优化,自行设计实施活套编码器可调式的安装结构,开发出活套编码器的冗余切换和故障报警功能。
This system has the functions of structure parameter optimization, shape optimization, FEM and its pre-processing and post-processing.
该系统能时机座进行结构参数优化、有限元分析、形状优化以及有限元前后置处理功能。
Variation diagrams in domains of feasible design and contour lines of optimization objective functions are drawn by means of PC-1500 computer. Obtaining optimum solution.
并用PC—1500计算机绘出了可行设计域及目标函数的等高线,确定出优化解。
Optimization design of common navigation functions is one of the important methods to guarantee task set schedulable and reduce receiver's power consumption.
优化设计常用的导航函数是保障任务集可调度、降低接收机功耗的重要手段。
Optimization design of common navigation functions is one of the important methods to guarantee task set schedulable and reduce receiver's power consumption.
优化设计常用的导航函数是保障任务集可调度、降低接收机功耗的重要手段。
应用推荐