查询词典 optimality principle

The formal solution of partial differential equations is given on characteristic line, the existence of the optimal control is proven by using Ekeland\'s variational principle, Gronwall Lemma and adjoint system, then the necessary condition of optimality is obtained by means of the conception of normal cone.

用特征线法表示出偏微分方程的形式解，利用Ekeland变分原理，Gronwall引理和共轭系统证明了最优控制的存在性，并借助于法锥概念得到了最优控制的必要性条件。

General method, including steepest descent method, conjugate gradient method and Dynamic Programming, is to search piecewise functions as the approximation with numerical methods on the base of Bellman\'s principle of optimality or the Hamiltonian function.

动态规划与智能仿生算法尤其适用于梯度信息不可得的情况。单一的优化方法用于不同情况下的化工动态优化问题未必可行有效，为此本文针对具体情况，提出了多种解法的集成策略。

However, for hill-climbing strategies to be guaranteed to find the global optimum the optimality landscape must be unimodal. Moreover, research has demonstrated that multiple maxima exist under the maximum likelihood principle. Therefore, hill climbing based evolutionary tree reconstruction methods often return local optima.

但是由于进化树的似然函数通常含有多个局部极优解，而爬山算法没有逃离局部极优的能力，因此基于爬山算法的进化树构建算法很容易陷入局部极优。

This paper presents multiple dynamic programming and the principle of optimality.

本文在现存单元动态规划原理的基础上，提出并证明了多元动态规划及最佳化原理。

To solve problems of time-delay production system, it proposes dynamic programming based on"principle of optimality conditions".

生产经营系统是个复杂大系统，其决策问题的解决涉及多个学科的交叉和融合。

Ant Algorithm-depth understanding of the principle of optimality helpful.

对深入理解蚂蚁算法的优化原理很有帮助。

Based on the principle of optimality,the search problem is then transformed to an equivalent problem of deterministic distributed parameters system,represented by a second order PDE.

采用分析的方法来研究随机运动目标的最优搜索问题，并将原问题转化为由一个二阶偏微分方程所表示的确定性分布参数系统的等价问题，推导出随机运动目标的最优搜索问题的HJB方程，并证明了该方程的解即是所寻求的最优搜索策略。

Secondly, based on the introduction of the contemporary situation and the existing problems of the performance analysis on the industrialization projects of the comprehensive agricultural development, this part makes an explanation on the mentality of designing and the principle of optimality for performance analysis system, then builds macro-level and micro-level performance analysis systems and the related models.

其次，在分析当前我国农业综合开发产业化经营项目绩效分析现状、存在问题的基础上，阐明了本研究绩效分析体系的设计思路和优化原则，并构建了优化后的宏观、微观绩效分析体系及模型。

Dynamic program is to solve much phase the mathematical method of decision-making problem, it can divide the moving process of a certain system for a certain number of level, use principle of optimality to build basic equation, make target function is achieved best, seek an optimum solution.

动态规划是解决多阶段决策问题的数学方法，它可以将某个系统的运行过程分为若干个阶段，利用最优化原理建立基本方程，使目标函数达到最优，求出最优解。

Optimality theory ; principle and parameter theory ; Wh-movement ; inversion of subject and object

优选论；原则参数理论；特殊疑问句移位；主谓倒装

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。