查询词典 quantization

Keywords: Neural network, Competitive learning, Vector quantization, Neuron underutilization, Algorithm

与传统竞争学习算法只有一个神经元获胜而得到学习不同，PSCL算法按照各神经元的获胜概率并通过对失真距离的调整使每个神经元均得到不同程度的学习，可以有效地克服神经元欠利用问题。

Starting from the classical motion equation of a domain wall in the ferromagnetic system, the analytic wavefunction was obtained by using canonical quantization method and unitary transformation .

从铁磁畴的能量方程出发，利用正则量子化方法和么正变换技术，解析地求得了磁畴量子化运动的波函数。

It can flexibly deal with the problems of universe of discourse and quantization of different variables; thus overcome the shortcoming of simple fuzzy control that it can not meet both the requirement of dynamic and static performance.

将分层模糊控制理论引入渠系自动控制，针对渠道运行控制特点，设计分层模糊控制器，它能灵活处理控制器输入、输出变量的论域及其量化问题，从而克服简单模糊控制器不能同时兼顾系统动静态性能的缺点。

First,wavelet transform decomposes the original image,then the coefficients of the three directions are used to construct the band-cross vector,and then the vectors are classified.In addition,new vector quantization technologies are used in this algorithm.

该算法在对图像进行多级小波变换后，构造三个方向的跨频带矢量，同时采用分类矢量量化，非线性插补矢量量化和基于人眼视觉特性的加权矢量量化，提高了图像的编码效率和重构质量。

Unsupervised algorithms such as principal component analysis 、 vector quantization、 independent component analysis and factor analysis can be understood as factorizing a data matrix subject to different constraints.

典型的非监督学习算法，如主分量分析、矢量量化、独立分量分析、因子分析等，均可以理解为对原始数据矩阵在一定条件限制下进行分解。

We propose a new variable bitrate, subband speech coding scheme which is combined the CELP with wavelet decomposition technique and vector quantization etc.

大量实验表明，这种方法在实现了大比例压缩编码和子带分割的灵活性的情况下，总的编码效果是满意的。

To alleviate the problem that codebook generated by Linde-Buzo-Gray algorithm includes a lot of invalid or identical codevectors in vector quantization. a coverage density based LBG algorithm is proposed.

针对矢量量化中Linde-Buzo-Gray算法产生大量无效或重复码向量问题，提出了一种基于覆盖域密度分割码向量方法。

In Chapter 4, we discuss WTC based on pyramidal lattice vector quantization .

第四章研究了基于塔式网格矢量量化的小波变换编码。

A coding scheme is proposed to eliminate the redundancy of output vectors in pyramidal lattice vector quantization .

并证明了，存在唯一的滤波长度为5的对称双正交小波，不存在滤波长度为5的反对称双正交小波。

This dissertation is mainly concerning digital image watermarking problems. In Chapter 2, a detailed survey on digital image watermarking is presented. In Chapter 3, an optimal scheme is proposed to use Human Visual System model to compute masking function. It will be used to control the strength of watermark signal for optimal embedding. In Chapter 4, we propose a novel watermarking scheme based on lattice vector quantization.

本文讨论了数字图像水印及其在多媒体安全中的应用，主要围绕下列问题进行研究和创新： 1、优化的水印嵌入模型：本文对基于直接序列扩频技术的水印算法进行了改进，根据人类视觉系统感知模型，提出了优化的水印嵌入模型，在不可感知性条件的限制下，使水印的鲁棒性达到最高。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。