查询词典 perturbation parameter

However,the performance of SVM is influenced greatly by the scale parameter σ2 and the penalty parameter C ,therefore,Genetic Algorithm to improve SVM in selecting these parameters based on face recognition is presented in this paper.

针对支持向量机在人脸识别问题中的应用，提出了一种基于遗传算法的参数选择优化方法。

The predictions are identical with that of foreign underwater acousticexperiments.The third,the scattering theory are applied in prediction of seareverberation and inversion of sea bottom parameter.Shallow-sea monstaticreverberation is predicted by combining shallow-sea normal mode theory withscattering theory.Then with simulated annealing of neural network and scatteringtheory accurate inversion of sea-bottom parameter and surface roughness are given.

第三，把散射理论应用于海洋混响的预报和海底介质参数的反演，首先通过浅海简正波理论和散射理论相结合，对浅海单程混响进行了预报；然后利用神经网络理论中的模拟退火法和散射场理论相结合，准确地反演了海底介质参数和表面粗糙度。

A 3-D finite element system of lumbar L4-5 was sectionally constructed with Mimics software system by lumbar CT images. The system was turned into a finite element system of degenerative lumbar by modified it's material parameter. The lumbar rotatory manipulation was decomposed by principium of manipulation. The parameter of mechanics was analyzed with the finite element system.

使用腰椎CT片，以Mimics软件系统逐层重建L4-5三维有限元模型，通过设定结构的参数完成退变腰椎间盘模型将向右侧旋转的坐位腰椎旋转于法进行分解，把各项力学参数代人模型进行计算分析即时显示于法作用时退变腰椎间盘的内在应力和位移的变化。

The motor's dynamic model, which is generally employed for speed control and parameter estimation applications, is improved for the purpose of improving the parameter estimation accuracy by the assumption that the stator self inductance Ls is identical to the rotor self inductance Lr. The motor's dynamic response to a direct on line start is used to estimate the parameters.

详细给出了遗传算法应用于动态数学模型参数识别问题的一般步骤，在Kron动态数学模型基础上，假定定子自电感Ls和转子自电感Lr相等，利用异步电动机直接空载起动的特性，对异步电动机动态数学模型和简化模型的参数进行了识别，给出了识别参数及有关结果。

Sensitivity analysis of model parameter was conducted in order to evaluate the effect of parameter change on model.

并对模型参数进行灵敏性分析，评价了主要模型参数改变对模型的影响。

The traditional separation of variables method is used to get the solution of SEW electric-fields when the parameter of the media changes abruptly.On the basis of these,WKB method is used to get the solution of SEW electric-fields when the parameter of the media changes gradually.

运用传统的分离变量法得到了媒质参数突变情况下球面电磁波场强的分布，在此基础上，模仿WKB方法推导出了媒质参数渐变情况下球面电磁波的场强分布。

It is also used to generate SPICE stimulus waveforms for these special sequential logic circuits quickly according to user's logic parameter specifications, as can speed up the logic parameter extraction process and guarantee a proper SPICE simulation waveform for the logic extraction.

提出了对具有反馈信息的时序逻辑电路进行逻辑参数提取时用于SPICE模拟的激励波形自动生成方法，该方法能根据用户指定的要提取的时延参数要求，很快产生这种时序逻辑电路的模拟激励波形，从而可以加快逻辑参数的提取过程，保证参数提取激励波形的正确性。

Main contributions are local optimal decoding algorithm of Hidden Markov model that was applied into off-line handwriting character recognition and parameter estimations. An abridged algorithm and parameter estimation of Hidden Markov models applied in character recognition were presented under simple hypothesis.

文中主要给出隐马氏模型在文字识别中局部最优的解码算法；在简单假设的前提下给出隐马氏模型在文字识别应用中的一种简化算法和相应的参数估计。

By mixing the model of life cycle law and the fast prototype law in the course of systematic development, the system has been fully benefited by I-DEAS variable size driving. The passenger train (hard seat car, hard sleeping car, soft sleeping car, soft carriage) of common use was mutually designed by incorporating the parameter and computer graphics, the three-dimensional, level and section pictures were assigned automatically, the scheme design with parameter and automation was realized.

在系统的开发过程中采用了生命周期法和快速原型法的混合开发模型，充分利用了I—DEAS软件的变量化尺寸驱动特性，集参数化和计算机绘图于一体，通过对通用客车(硬座车、硬卧车、软卧车、软座车)进行交互设计，自动生成三维效果图和平面、断面布置图，实现了铁路客车方案设计的参数化设计与自动化设计。

Chapter 2 mainly discusses the basic acknowledge of Sobolev space and Banach spacedifferential, and also discusses basic theory of parameter identification and optimal control ofparabolic distributed parameter system.

第二章主要介绍了Sobolev空间和Banach空间微分学的基础知识，还介绍了抛物型分布参数系统参数辨识与最优控制的基本理论。

I want to be a big fish in a small pond.

我要做一条在小池塘里的大鱼。

While the software functioned well, we did not feel the same about their customer support!

虽然该软件运行良好，我们没有同样的感觉他们的客户支持！