查询词典 optimal strategy

The reconstruction problem is ill-posed, so two optimal criterions, the least module and the smoothness criterion base on Tikhonov regularization technique, are introduced into reconstruction algorithm. Many regularization parameters choice strategies are investigated, and the TPA(Two—Parameter Algorithm) strategy which is based on the Morozov discrepancy principles, is implemented in two regularization reconstruction algorithms.Numerical experiment results show that the nonnegative and smoothness constraint condition can overcome the difficulty of iteration semiconvergent, preconditioned technique can improve convergence rate and reconstruction accuracy, smoothness regularization criterion can meliorate ill-posed problem of reconstruction and enhance iteration stability, and the TPA is an effective strategy of regularization parameters choice.

数值试验表明：在共轭梯度法中引入非负约束和光滑约束改善了迭代的"半收敛"性，非负约束保证了解的非负性，光滑约束抑制了重建解的振荡现象，约束算法的重建精度与无约束算法相比大幅度提高；在约束共轭梯度重建算法中引入预优技术，可以加快算法的收敛速度，提高迭代的稳定性和重建精度；引入光滑准则的正则化技术可以有效改善图像重建问题的不适定性，加快迭代的收敛速度，提高迭代的稳定性和图像重建质量，计算正则参数的TPA算法在闪光照相图像重建中是有效的。

A new fuzzy logic based hybrid on-line minimum input power search control strategy is proposed. The gains derivative method of this strategy utilizes the research results of loss model control to do on-line scaling factor calculation. The asymmetric shape design of membership functions can make the control system converge fast with avoiding the oscillation around the optimal flux.

基于损耗模型控制的研究成果以及在线搜索控制的研究成果，提出了一种新型混合在线式直流最小功率模糊搜索效率优化控制算法，算法对模糊集合所作的不对称隶属度函数设计，解决了系统在效率最优点处的振荡问题。

In short, this dissertation consists of two parts. The first part is about the optimal choice of energy strategy in the western development strategy.

简言之，本文的研究工作包含了两个部分：第一部分是讨论我国西部开发战略中能源开发战略的选择问题。

Through numericalcalculation, three victory rates exceed 50% by used the global optimal mixed strategy, some pure strategies and some artificial intelligence algorithm, which certificates the optimality of the global strategy.

通过计算机实验，求得的全局最优混合策略与一些纯策略、以及一些人工智能算法在四万次的对决中胜率均超过了50%，验证了此全局策略的最优性。

In this paper, an elite-preservation strategy and a random search strategy evolutionary algorithm are introduced. Both of the algorithms enable us to find the optimal solution within a short period of time.

该文讨论了进化算法中的一种基于精英保存策略的改进的遗传算法和一种随机搜索进化策略在函数优化问题中的应用。

The optimal task control strategy of the manufacturing cell is obtained by the combination of the uniform technology and the stochastic dynamic programming. The simulation results tesity the feasibility and validity of the control strategy.

结合一致化技术和随机动态规划的方法，得到知识化制造单元的最优任务控制策略；仿真结果表明了所求得的控制策略是可行和有效的。

Second, based on the above, it deeply studies optimal hedging strategy brought out by the present various compellent hedging disclosure standard, and compare their value effects, and point out that a full complete, prompt and exact disclosure can have the optimal effect.

并在此基础上加以扩展，深入研究当前各种强制性套期信息披露方式下所导致的最优套期策略以及价值效应比较分析，指出一个充分、完整、及时、准确的信息披露可以达到最有效的监管作用，并对我国上市公司的信息披露情况进行了分析。

The reconstruction problem is ill-posed, so two optimal criterions, the least module and the smoothness criterion base on Tikhonov regularization technique, are introduced into reconstruction algorithm. Many regularization parameters choice strategies are investigated, and the TPA(Two—Parameter Algorithm) strategy which is based on the Morozov discrepancy principles, is implemented in two regularization reconstruction algorithms.Numerical experiment results show that the nonnegative and smoothness constraint condition can overcome the difficulty of iteration semiconvergent, preconditioned technique can improve convergence rate and reconstruction accuracy, smoothness regularization criterion can meliorate ill-posed problem of reconstruction and enhance iteration stability, and the TPA is an effective strategy of regularization parameters choice.

数值试验表明：在共轭梯度法中引入非负约束和光滑约束改善了迭代的&半收敛&性，非负约束保证了解的非负性，光滑约束抑制了重建解的振荡现象，约束算法的重建精度与无约束算法相比大幅度提高；在约束共轭梯度重建算法中引入预优技术，可以加快算法的收敛速度，提高迭代的稳定性和重建精度；引入光滑准则的正则化技术可以有效改善图像重建问题的不适定性，加快迭代的收敛速度，提高迭代的稳定性和图像重建质量，计算正则参数的TPA算法在闪光照相图像重建中是有效的。

With respect to the exponential computation complexity of the optimal multi-user detection in CDMA systems,a sub-optimal multi-user detector based on evolution strategy for exonerating crossover operation and lowing computation complexity is proposed.

1引言CDMA通信及其关键技术是目前国内外移动通信研究的热点，但是CDMA通信系统中存在着固有的多址干扰，极大地限制了多址用户数或同样用户数条件下的通信质量。

According to the demand of series parallel system, raise the control strategy for the energy manage and prospective aims of full auto, then determine the control strategy that adopts the optimal work curve of engine.

根据混联式的系统要求提出了整车能量管理的控制策略及其需要达到的目标，确定了采用发动机最优工作曲线控制策略。

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％。