查询词典 reduction

In this paper,with respect to the ordinal variables,the definitions of attribute reduction of dominance-based rough set approach in ordered information systems and ordered decision tables are given.Then the approach of sorting objects comprehensively using rough set theory is brought in to obtain a series of ranks.Based on these ranks,nonparametric methods to analyze correlation between two attribute subsets are introduced,and Spearman rank correlation coefficient is used as a measure of attribute correlation.Based on this measure,a new method of attribute reduction of ordered information systems and ordered decision tables is presented without changing the ordinal information of the universe.

针对有序尺度变量，给出了有序信息系统与有序决策表在优势关系下的粗糙集约简定义；利用粗糙集方法将对象综合排序，进而得到一组秩；根据这些秩，运用非参数统计的思想研究了两个属性子集之间的相关性，并将Spearman秩相关系数作为属性相关性度量；在不改变总体序信息情况下，给出了基于此度量对有序信息系统与有序决策表进行约简的新方法。

Last Wednesday's Bank of China announced the reduction of commercial banks on one-year deposit and lending rates 108 basis points, and other period of the deposit, lending rates corresponding to the reduction in the rate at the same time the central bank lowered again Deposit and lending, such as the rediscount rate.

上周三的中国银行公布的商业银行一年期存款及贷款利率下降108个基点，以及其他期限存款，贷款利率在相应的速度，同时减少央行再次下调存款和贷款，如再贴现率。

Then, the homologous chromosomes separate, members of each pair go to opposite poles. Reduction in chromosome number is achieved. Meiosis I is the actual reduction division.

之后同源染色体分离，每对的每个成员去相反的极，在这时，染色体数目减半因同源染色体分离而使染色体数目减半，因此减数分裂其实是真正的"减数分裂"。

The phenological phase of reduction division of pollen mother cells and the morphological character of flo-wer buds at reduction division stage were examined.

观察了苹果二倍体品种金帅和国光减数分裂中期Ⅰ染色体配对和构型，提出了进一步研究这一问题的设想。

By analyzing phases velocity profiles and resistance lawv resulted from gas slug in the pipe center,the condition that the secondary flow occurs,phases velocity profiles,formula of drag reduction and a curve of drag reduction have been obtained.

以流体力学基本方程为基础，通过对气体在管道中心形成段塞流的相速度分布和阻力规律分析，得到了二次流发生的条件、各相流体速度分布、减阻率关系式以及减阻率曲线。

I didn't want my reduction in work to be my reduction in pleasure, she said.

我不希望我在工作中减少是我在减少快乐，她说。

The method includes the following steps: firstly, a spherical neighborhood of present sample points is established by using the geometric spherical-modelling theory and all the sample points contained in the spherical neighborhood are adopted as candidate neighbor points, thus not only preserving the effectivity of the dimension reduction capability when data sets are sparse but also getting the advantages of low-sensitivity to isolated points and good stability of the preserved topological structure; then a data relevance matrix more matching semantics can be obtained by relevance measurement based on route clusters to update the candidate neighbor points in the spherical neighborhood and optimize the regular neighborhood space of the present sample points, thus improving the phenomenon that the dimension reduction of sample sets provided with folded curved faces is apt to suffer the integrated-structure distortion in case of heterogeneous data distribution.

首先利用几何开球原理建立当前样本点的球状邻域，将包含在球状邻域内的所有样本点作为候选近邻点，不但能够保持在数据集稀疏情况下的降维性能的有效性，而且具有对孤立点敏感性不高、保留拓扑结构稳定性好的优点。然后利用基于路径聚类的相关性度量得到更符合语义的数据相关性矩阵，用来对球状邻域内的候选近邻点进行更新，优化当前样本点的规则邻域空间，改善了当数据不均匀分布时在带有折叠弯曲面的样本集上降维容易出现整体结构扭曲的现象。

Firstly, a dynamic reduction method, which integrates genetic algorithm and resample technology, is introduced. Then dynamic reduction method is used to get reduct sets that have stable and good generalization ability.

首先，通过结合遗传算法求约简和重采样技术介绍了一种动态约简方法，通过动态约简方法可以获得稳定的、泛化能力较强的属性约简集。

A reduction of tariff on agricultural products affects the market price of the importing country, the interests of producers and consumers and the government's tariff revenue. Tariff reduction depresses the protection of agricultural products in importing countries, thus strikes the agricultural markets.

对农产品关税进行减让，直接和间接地影响到了进口国的市场价格、生产者利益以及消费者的福利和政府的关税收入，关税减让使进口国对国内农产品的保护水平降低，从而对进口国的农产品市场产生一定的冲击。

Compared with mixture of heavy oil and diesel oil, by using this new type reductant, it is possible to stop generation of black smoke in the reduction period of copper refining by reverberatory furnace, thus shortening reduction time and reducing operating cost.

与重柴油相比，使用煤基-α2β3γ3新型还原剂在铜反射炉精炼还原期间可杜绝黑烟的产生，还原时间缩短，生产成本降低。

I'm not an actor. I'm a professor of paleontology.

我不是演员，我是古生物学教授

Spider Network Web site that is a very image of the name.

网络蜘蛛即Web Spider，是一个非常形象的名字。