超度量空间

Figure associated with the metric space subdominant hierarchical tree on the impact of the study given the equity portfolio in the stock prices of several series of economic factors the quantity and nature of the provision of useful information.

与图相关联的亚超度量空间上的分层树为研究影响给定股票组合的股价对数序列的经济因素的数量和性质提供了有用的信息。

In this paper, we give a section theorem of Ky Fan type and its equivalent theorem in hyperconvex metric spaces, and as their applications we obtain some minimax theorems and a coincidence theorem.

赵云河 ，张惠丽文章给出了超凸度量空间中的一个Ky Fan型截口定理及其等价定理，作为它们的应用，得到了一些极大极小定理和一个重合定理。

Firstly, sample data stream by two neighbor windows of given length. Then the sampling data is projected to normalized high dimension feature space and the two minus hypersphere models of two window sampling data sets are constructed respectively. Finally, detect change by computing cosine of inclination angle of two centrals of hypersphere.

该算法首先以给定长度的两相邻时间窗口对数据流取样，然后以支持向量数据描述方法将这两相邻时间窗口取样的数据流子集映射到规范化的高维特征空间，并分别建立描述这两相邻时间窗口取样数据流子集映像的最小超球模型，最后通过计算两超球之间的球心矢量的夹角的余弦，度量该两相邻时间窗口取样数据流子集的相似性检测模式变化。

New maximal element theorem in noncompact hyperconvex metric spaces is established.

bstract 在非紧超凸度量空间中建立了一个新的极大元定理。

As applications,a Ky Fan matching theorem for transfer open covers,a Fan- Browder coincidence theorem and maximal element theorem are established.

作为应用，获得了非紧超凸度量空间中的转移开覆盖的Ky Fan匹配定理，Fan-Browder重合定理和极大元定理。

In the present paper, some theorems for variational inequalities and minimax inequality are obtained in hyperconvex metric space s.

摘要文章给出了超凸度量空间中的一些变分不等式定理和极大极小不等式定理。

In the present paper, some theorems for variational inequalities and minimax inequality are obtained in hyperconvex metric spaces.

文章给出了超凸度量空间中的一些变分不等式定理和极大极小不等式定理。

Since the commonly-used parameter analysis method is liable to cause the diversity of results in style investment analysis, the method of subdominant ultra-metric space is introduced to the study of style investment. Subdominant ultra-metric space is provided with the exactly defined topology sequence, and corresponded with index hierarchical structure and style.

针对常用的参数分析方法在证券风格投资分析中容易导致结果的差异性问题，提出将亚超度量空间方法引入到风格投资研究中，因为具有准确定义拓扑序列的亚超度量空间与指数分层结构、风格能够一一对应。

Firstly, the distance between stocks are calculated by using prices of stocks, and subdominant ultra-metric space by associating the minimum spanning tree of portfolio. Secondly, the subdominant ultra-metric space to the chart of index hierarchical structure is transformed, and finally the distribution of style is gained. Using sample of Shanghai Stock 50 Index from 2004 to 2007, the demonstration result shows that style of industry is more prominent horizontally, especially in the bank and steel industries. The style of region and cross holding also exists. And after the reform of non-tradable shares, style of industry becomes more obvious vertically and more other styles also occur.

首先利用股票价格计算出股间距离，并采用关联该证券组合的最小生成树优化方法，从而得到亚超度量空间；其次将此亚超度量空间转换成指数分层结构树图，最后得到风格的分布特征。2004~2007年的上证50实证结果表明：横向来看以行业分类的风格较为显著，其中以银行和钢铁也最为明显，此外还有与地区差异、交叉持股相关的风格效应显现；纵向则在股改后行业风格效应更显著，其它的风格也显现得更多。

On the approximate fixed points of commuting nonexpansive maps in hyperconvex space s

本文研究超凸度量空间的一些性质，给出更深入的结果及反例。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。