特征函数

Linear Discriminant Analysis is one of the most popular linear projection techniques for feature extraction. The major drawback of applying LDA is that it often encounters the Small Sample Size problem. Besides, their optimization criteria is not directly related to the classification accuracy.

摘要线性判别分析是一种较为普遍的线性特征提取方法，它的主要缺点是在应用时经常遇到小样本问题，同时其准则函数并不与识别率直接相关。

The monotony and extremum theory of function are applied to prove the geometrical characteristic of error hand for 2D linear segment uncertainty ε(subscript σ) model in theory. The result shows that the error hand has the geometrical shape of "larger ends and smaller middle" or "one end larger and the other smaller". The minimum width and its exact position of the error hand are calculated too. It is proved that the minimum width position of the error hand is near the end with the smaller mean square error.

运用函数单调性和极值理论，从理论上证明ε模型的误差带的几何特征；得到线元误差带不仅具有&两端大、中同小&，而且也可能具有&一端大、一端小&的几何形状；给出了误差带的最小带宽及其位置；论证了误差带的最小误差带宽的位置靠近中误差较小的一端。

In this paper, an improved algorithm of image feature extracting for independent component analysis was proposed based on basic functions' maximization of sparseness.

利用基函数稀疏性的极大值特点，本文提出一种改进的基于独立分量分析的图像特征提取算法。

Based on the clustering method, the mixing matrix was first estimated by a new potential function using the sparseness of sources.

首先，利用变换后信源的稀疏特征，采用一新的势函数通过聚类算法估计混叠矩阵。

Constructing model apparatus system of bell-like suction box, the outlet section velocity distribution was measured by probe under various suction open heights.

以流道出口速度均匀度、速度加权平均角、水力损失大小为评价目标函数，研究了钟形进水流道不同喇叭口悬空高度的内流场特征和水力损失特性，提出了喇叭口悬空高度的合理取值范围。

In addition, these functions have the possibly expensive feature of filling any leftover portion of the target buffer with nulls.

另外，这些函数可能有昂贵的特征：用null来填充目标的任何剩余的部分。

The results show that the logic function characters the nonlinear Phillips curve and the transition takes place at lag eight periods.

本文应用非线性阈值协整对我国菲利普斯曲线及其在经济周期不同阶段的机制转移进行研究，结果表明我国菲利普斯曲线具有显著的非线性特征，并且非线性转换是由逻辑函数刻画的，转换的位置发生在产出缺口的滞后8个季度。

Combining with the characters of liner industry, the paper set up an evaluation index system. And then 15 liner corporations picked out from top 20s in container liner industry were evaluated synthetically with catastrophe progression method and set pair identical degree analysis method. Based the above evaluation, a contrast analysis between the core competence of the container liner corporation in our country and ones in other countries was conducted.

在此基础上，本文在全球运力排名前20位的大型集装箱班轮企业中选取了15家为研究对象，结合国际集装箱班轮运输业的行业特征，建立了核心竞争力评价指标体系，挑选了突变模糊隶属函数法和集对同一度分析法两种方法，对研究对象的核心竞争力进行了综合评价，并对结果做出了分析，同时，借助于核心竞争力评价指标体系，对我国集装箱班轮企业的核心竞争力状况进行了对比分析。

Soil water characteristic curve was measured with a sand column for both drying and wetting processes,and the data were used to fit the van Genuchten model.

0引言非饱和土壤水的吸力是土壤含水率的函数，其关系曲线称为土壤水分特征曲线或土壤持水曲线。

It uses Bézier curves to fit the fruit outline, and control prism of the fruit surface by introducing a noise function which conforms to the variety characteristic.

采用Bézier曲线拟合苹果果实的轮廓，通过加入表征品种特征的扰动函数来控制果实表面的果棱。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷