查询词典 problem of moments

To represent the shape content of an image, the edge orientation autocorrelogram is used. To represent color features, local color cumulative histogram is computed, and to solve the problem of lacking the spatial knowledge of the histograms, we also extract the color moments of the partitions.

用边缘方向自相关图表示图像的形状内容；对于颜色特征，计算图像颜色的局部累加直方图，同时为了弥补其不包含颜色空间分布关系的缺点，又提取了分块的颜色矩，并利用高斯模型对各特征距离进行归一化，综合上述三个归一化距离，进行全局相似度量。

The color moments of partitions are extracted from the L(superscript *)a(superscript *)b(superscript *) color space to solve the problem that the global color moment excludes the color space distribution, the edge orientation autocorrelogram is used to represent the shape content of an image, and the feature distance is respectively computed. The Guassian model is used to normalize the feature. Based on the normalized distance, the global similarity measure is obtained, and the retrieval precision is improved by the weight value adjustment.

为了弥补全局颜色直方图不包含颜色空间分布关系，在La6颜色空间提取分块的颜色矩，同时利用边缘方向自相关图获得图像的形状内容，然后分别计算各特征的距离并利用Guassian模型进行特征归一化，综合上述各归一化距离，进行全局相似度量，最后采用了权值调整的相关反馈方法进一步提高检索精度。

A method of moment features testing components' states is put forward to solve this problem.First the components' barycentric coordinates and second-order centered moments are calculated.Then the inclined angles are obtained,on the basis of which the inclined components can be rectified.

针对这一问题，提出了一种矩特征检测构件状态的方法，该方法首先计算出图像中构件的质心坐标和二阶中心矩，然后求出构件的倾斜角度，根据倾斜角对处于倾斜状态的构件进行校正。

The method of moments is an integral equation based numerical technique is to reduce the formal problem to a set of linear equations that can be solved by matrix inversion.

作为一种基于数字技术的积分方程，矩量方法用来将传统的问题简化为可以用矩阵转换来解决的一系列方程集。

By the aid of canonical moments and maximin principle, we derive a criterion-robust discrimination design for the described problem.

进一步利用小中取大原则，我们证明了Φ_β'-最适设计的最小Φ_β-有效性之最大值会发生在β'=β*，此时对应的Φ_β*-最适设计即为具有准则稳健性质的最适设计。

However,due to its complexity,the problem of fast computation of orthogonal moments has not been well solved.

本文针对一类采用图像块方法描述的图像，提出两种快速、有效的计算Legen dre矩的新方法，它们分别是累加方法和积分方法。

In what can only be described as a good kind of problem, Apple moments ago issued a two paragraph statement saying that it will delay the international launch of the iPad until the end of May.

在什麼只能说是一个好样的问题，苹果的时刻前两个段落发表声明说，它将推迟在IPAD国际发射，直到5月底。

We introduce convex,and in particular semidefinite,optimization methods,duality and complexity theory to shed new light to this relation for the single stock problem, given moments of the prices of the underlying assets,we show that we can find best possible bounds on option prices with general payoff funcations efficiently,either algorithmically(solving a semidefinite optimization problem)or in closed form, conversely,given observable option prices,we provide best possible bounds on moments of the prices of the underlying assets,as well as on the prices of the other options on the same asset by sovling linear optimization problems for options that are affected by multiple stocks either directly(the payoff of the option depends on multiple stocks)or indirectly(we have information on correlations between stock prices),we find on-optimal bounds using convex optimization methods,however,we show that it is NP-hard to find best possible bounds in multiple dimensions,we extend our results to incorporate transactions costs,this paper,in theory and practice can provide a reference to researchers and designers about Chinese financial derivative products,the full text is divided into six chapters as follows: ChapterⅠ:Papers on the background and significance of the subjects on a number of option pricing models as well as their advantages and shortcomings of the model and describes the status of research and writing papers and the main contents of the basic idea.

相应地，给定期权价格，也能够出标的资产瞬时价格的最有可能的最好的界。还有通过解决一个线性最优化问题，根据同一标的资产的其他期权的价格来找到这个期权的界值，对于期权受到多种股票价格直接影响(期权的收益依赖于多种股票)或者间接影响(我们有股票之间联系的有用信息)，如果使用凸规划方法我们就会发现没有最优的界，也能够证明对于多维情形确实是很难找到最优的最有可能的界值，最后将这一结论推广到考虑交易成本的情况。本文在理论和实践上给我国金融衍生产品研究者和设计者提供一定的参考。全文共分为六章，具体安排如下：第一章：阐述论文的选题背景和意义，介绍期权定价的一些模型以及这些模型的优点与缺点，并介绍国内外研究的现状以及论文的写作基本思路与主要内容。

It is often in these private moments that we reflect on the problem of self-consciousness, existence and fate.

但在这些个人活动的时刻，也常常会反映出我们的自我意识，有关存在和命运的问题。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。