查询词典 combinatorial optimization problem

To address routing planning of the delivery vehicle navigation in logistics, the article based on point-to-point model, improved the fundamental particle swarm optimization in the initial population, the method of population and evolutionary strategy for improvement, put forward the improved particle swarm optimization for vehicle routing point-to-point model problem of navigation in distribution, and verify the validity of the algorithm by simulation tests.

为解决物流配送车辆导航中的路径规划问题，文章以点对点模型为基础，对基本粒子群优化算法在初始种群的产生方法和种群的进化策略方面进行改进，提出适于配送车辆导航中路径规划点到点模型的改进型粒子群优化算法，并通过仿真试验验证算法的有效性。

The classical Abel identity as specific case and some significative combinatorial identities are obtained.

由此得到Abel恒等式的特殊情形和一些很有意义的组合恒等式。

Based on this, to the recent years the related questions which appear frequently in the middle school mathematics competition, nimble utilization the aliquot concept, the relative prime nature, the combinatorial nature, the factorization, as well as the conclusion of the continual integer product nimbly can by aliquot knowledge and the methods, and so on, carried on the proof and the explanation.

在此基础上，对近年来在中学数学竞赛中频繁出现的相关问题，灵活运用整除概念、互素性质、组合性质、因式分解以及个连续整数的乘积能被整除的结论等知识和方法，来进行证明与解答。

In the last section, we obtain a sufficient and necessary condition for an antichain to be the set of all circuits of a combinatorial scheme.

在最后一节，我们得到了组合概型的一个反链是其所有圈集的充分必要条件。

As in Volume 2, where I found to my delight that the basic principles of elementary probability theory and number theory arose naturally in the study of algorithms for random number generation and arithmetic, I learned while preparing Section 7.2.1 that the basic principles of elementary combinatorics arise naturally and in a highly motivated way when we study algorithms for combinatorial generation.

如同在第二卷中那样，在那里我高兴地发现，初等概率论和数论的基本原理很自然地出现在关于随机数生成和算术的算法的研究中。而当我准备编写7.2.1小节时，我注意到，当我们研究组合生成的算法时，初等组合学的基本原理自然地并以高度带激励的方式出现。

However, combinatorial chemistry has matured over the years and has found its place in the armamentarium of drug hunters.

但是，组合化学经这几年已经逐步成熟，在药物发现设备领域建立了一席之地。

Because of the 1-1 property of bijection, the identity is proved. This thesis just applies this method to give identities their combinatorial proof.

本文也正是采用了这种方法对恒等式进行组合证明，从而揭示组合证明的一般方法。

On two binomial coefficient s and their related combinatorial identities;2. Several identities on binomial coefficient s and trigonometric func tion values of special angles are obtained.

利用组合数学的一些技巧给出了切比雪夫多项式的通项表达式，并得到了一些二项式系数，特殊三角函数值的恒等

NMath Stats contains a data table class with functions for computing descriptive statistics, such as mean, variance, standard deviation, percentile, median, quartiles, geometric mean, harmonic mean, RMS, kurtosis, skewness, and many more; PDF, CDF, inverse CDF, and random variable moments for a variety of probability distributions, including normal, Poisson, chi-square, gamma, beta, Student's t, F, binomial, and negative binomial; Combinatorial functions, such as factorial, log factorial, binomial coefficient, and log binomial; Multiple linear regression; Basic hypothesis tests, such as z-test, t-test, and F-test, with calculation of p-values, critical values, and confidence intervals; One-way and two-way analysis of variance and analysis of variance with repeated measures; Multivariate statistical analyses, including principal component analysis and hierarchical cluster analysis.

nmath统计包含一个数据表的阶层与职能计算描述性统计，如平均，方差，标准差，百分位，中位数， 25 ％，几何平均数，调和的意思是，有效值，峭度，偏度，还有更多的； PDF格式，民防部队，逆民防部队，并随机变量矩的各种概率分布，包括正常，泊松，卡方检定，伽玛，测试版，学生的吨，男，二项式，并负二项分布；组合的功能，例如阶乘，日志阶乘，二项式系数，并登入二项式；多元线性回归；基本假设测试，如的Z测试， t检验， F检验，计算p值，临界值，和置信区间；之一，双向和双方法方差分析和方差分析与反复的措施；多元统计分析，包括主成分分析和聚类分析。

The research of congruence of binomial coefficients is one of the most important problems in combinatorial number theory.

二项式系数的各种同余性质是组合数论中最令人感兴趣的研究课题之一。

We have something to do in the new stage.

在这段崭新的时期中，我们有一些要做的。

The difference between tourism decision-making under uncertainty and risky tourism decision-making is indistinctive.

其中不确定性旅游决策和风险旅游决策的界线比较模糊，两者的区分是相对的。