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Based on a great many literature, this paper analyzes and summarizes the genetic algorithm for the design of structural optimization. The basic conceptions and primary characteristics are introduced in this paper. This paper discuss some primary factor when genetic algorithm applied on optimal design, for example the mathematical model、the constrained problem、the initial population and the controls parameter of genetic algorithm Aimed at the characteristic of structural optimization and finite-element analysis, this paper accomplishes the optimal program based on the simple genetic algorithm.

在广泛阅读文献和调研的基础上,本文对遗传算法及其在结构优化设计应用中的相关内容进行了分析和综合,对结构优化设计的基本概念、主要特点进行了介绍,对遗传算法应用于结构优化设计时的数学建模、约束条件处理、初始种群的产生及其遗传算法控制参数的选择几个关键因素作了概要的分析与研究。

Based on a great many literature, this paper analyzes and summarizes the genetic algorithm for the design of structural optimization. The basic conceptions and primary characteristics are introduced in this paper. This paper discuss some primary factor when genetic algorithm applied on optimal design, for example the mathematical model、the constrained problem、the initial population and the controls parameter of genetic algorithmAimed at the characteristic of structural optimization and finite-element analysis, this paper accomplishes the optimal program based on the simple genetic algorithm.

在广泛阅读文献和调研的基础上,本文对遗传算法及其在结构优化设计应用中的相关内容进行了分析和综合,对结构优化设计的基本概念、主要特点进行了介绍,对遗传算法应用于结构优化设计时的数学建模、约束条件处理、初始种群的产生及其遗传算法控制参数的选择几个关键因素作了概要的分析与研究。

This paper introduces some common query expansion approaches in relevance feedback based on probability model and vector space model,then a new term selection method is introduced based on language model,which takes into account two features of expanded terms-"relevance"andco...

本文介绍了概率模型和向量空间模型下的常用查询扩展方法,并提出了一种基于语言模型的相关反馈方法,该方法同时考虑了扩展词应该具备的两个特征,即相关性和覆盖性。在TREC测试集上对这些算法进行了比较,结果表明这种新算法在平均准确率上比传统方法有所提高。

It settles the problems of fast video clip retrieval in large amount video database with effective organization of video features database by VA-File and fast query algorithms by restricted sliding window. In addition, we design a new similarity measure which synthetically considers the visual similarity and temporal order between video clips.

在基于低层特征的视频检索方面,本文提出了基于高维索引结构的快速视频检索算法,该方法利用高维索引结构VA-File组织视频数据库,设计了两种不同的子片段分割算法,以及新的包含视觉相似性和时序关系的视频片段相似度度量,并通过基于限定性滑动窗口的快速查询算法,在一定程度上解决了大规模视频数据库的快速高效查询问题。

Theoretical analysis and experiment results prove that our presented technique is one of the fastest techniques for the stable, real-time animation of a kind of non-rigid objects.

进行织物悬垂模拟的实验结果表明,新的算法在求解过程中是收敛和稳定的,算法在实时性上较已有的方法有一定的优越性,同时该算法得到了良好的视觉效果。

Based on cognition psychology and information entropy the author has proposed a simplifying algorithm that reduced the construction complexity degree.

2在粗糙集理论与挖掘算法的基础之上,研究了概念格的理论与知识表达方法,提出了具有完备性的分类知识的挖掘算法,构建了基于概念格的分类知识表达结构模型,并在认知心理学与信息熵的理论基础上,研究了降低概念格构造复杂度的简化算法。

First, the time series model of the random road roughness running by construction machinery is built up based on the measured data of the random road roughness and by means of the basic theory and method of the time series analysis. A real-time parameter estimation method of fuzzy weighted recurrence least square algorithm is represented through analyzing the conventional recurrence least square algorithm. Then, the new recurrence algorithm and the on-line tuning method of the weighted matrix are given out, and computer simulation is performed.

首先,以实测的地面随机不平度数据为依据,应用时序分析的基本理论和方法,建立了工程机械行驶地面随机不平度的时间序列模型,并在分析传统参数估计方法递推最小二乘算法的基础上,提出了模糊加权递推最小二乘算法的参数实时估计方法,给出了在此基础上的递推算法及加权矩阵的实时在线整定方法,并对其进行了计算机仿真研究。

In this paper we've compared several predicate of first order operators, and proposed an improved algorithm which is based on the automatic double threshold value improvement algorithm based on the maximum inter-cluster distance and intra-cluster variance ratio.

在边缘检测算法的选择上,比较了几种常用的一阶微分算子的优劣,并在Canny算子的基础上提出了基于最大类间、类内距离比值的自动双阈值改进算法。

BP neural network based on adaptive UKF is introduced in this paper for the standard BP neural network has slow converges,local minimum value and weak generalization ability.It can train weight of BP and improve the efficiency of BP without linearization by using the frame of Kalman filters and adaptive factor to adjust the variance of dynamic model.

1引言1986年,Rum elhart和M cC lelland等人在多层前向神经网络模型的基础上,提出了误差反向传播学习算法(BackPropagation简写BP),该算法是目前在神经网络中应用最广泛的算法,它解决了多层前向神经网络的学习问题[1]。

In the article, we put forward improved algorithm that based on analysis and contrapose shortage about the single-exponent smoothness method and compare algorithmic thinking, calculative method and forecast result.

本文针对单指数平滑法中存在的不足,在分析基础上提出改进算法,并就算法思想、计算方法和预测结果进行了比较分析;改进算法在预测精度、非平稳时间序列适应性等方面效果有明显提高,对企业需求预测具有较好的指导意义和参考价值。

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推荐网络例句

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊!不用提了。提到肉,真是糟透了。

Tristan, I have nowhere to send this letter and no reason to believe you wish to receive it.

Tristan ,我不知道把这信寄到哪里,也不知道你是否想收到它。