分类映射

This passage analyzes the advantage and disadvantage of the Boolean Model and the Vector Space Model in information retrieval model: the Boolean Model is simple to realize, but its classification ability is limited and the logic expression formula is strict.

本文分析了信息检索中传统文档特征表示的布尔逻辑模型和向量空间模型的优缺点：布尔逻辑模型虽机制简单、容易实现，但是它的分类能力有限且逻辑表达式过于严格；向量空间模型将文档映射到连续域向量空间，为进一步的权重计算等多元处理提供了基础，但容易忽略文档集合中各个文档的一些共有特征。

Then mapping the relationship between morphological features vector and shape of precipitate through BP neural network to achieve the purpose of automatic classification statistic of precipitates.

然后利用BP神经网络建立粒子特征矢量与粒子形态的映射关系，继而实现对各种形态析出相粒子的自动分类统计。

The article roughs out some result about the mapping class group of a toms,including a classical theorem about the classification of all automorphisms of a toms.

文章介绍了关于环面的映射类群的一些结果，包括环面到自身的自同胚类的分类的经典结果。

A new fusing facial feature recognition algorithm based on kernel Canonical Correlation Analysis was proposed,for mapping image data into feature space and improving classifying accuracy.

为了更有效地映射图像数据样本到可分类特征空间，提高分类正确率，提出了一种新的基于核函数的典型相关分析的融合人脸识别算法。

The essential features of the algorithm are as follows: A kernel modification algorithm is constructed according to the conformal mapping of information geometry and the modified kernel function is subsequently used to train the classification algorithm in support vector data description.

该算法的核心思想为：根据信息几何中保角映射的方法构造数据驱动的核函数修正算法，然后再利用修正的核函数训练支持向量数据描述分类算法。

In this paper,We define the notions of lightcone Gauss map ,lightcone pedal curve and lightcone height function of a spacelike curve in Minkowski 4-space, and established the relationships between singularities of these objects and geometric invariants of curves under the action Lorentz group ,and as an applications of standard techniques of singularity theory classified singularities of a spacelike curve in this space .

在本文中我们定义了四维Minkowski空间内类空曲线的光锥高斯映射，光锥垂足曲线，光锥高度函数的概念，建立了这些对象的奇点与在洛仑兹群作用下曲线的几何不变量之间的关系，并且运用奇点理论的标准工具对该空间中类空曲线的奇点进行分类。

In this paper,We define the notions of lightcone Gauss maps ,Hghtcone pedal curves and lightcone height function of a spacelike curve in Minkowski 4-space, and established the relationships between singularities of these objects and geometric invariants of curves under the action Lorentz group ,and as an applications of standard techniques of singularity theory classified singularities of a spacelike curve in this space .

在本文中我们定义了四维Minkowski空间内类空曲线的光锥高斯映射，光锥垂足曲线，光锥高度函数的概念，建立了这些对象的奇点与在洛仑兹群作用下曲线的几何不变量之间的关系，并且运用奇点理论的标准工具对该空间中类空曲线的奇点进行分类。

As to the multiple classification algorithms of large size rule set, we introduce a algorithms named recursive flow classification and this algorithms use the linear buffer to implement recursive map.

接着本文介绍了应用于大规模规则库的快速分类算法的解决方案——递归流分类，该算法是一种利用线性存储区分块递归映射的算法。

The new method for seismic attribute analysis colligates information of seismic,logs and geology by crossplot and broadcast and cluster with the methodology of science instead of analysis with handcraft and eyeballing.With the method,seismic attribute analysis plays an important role in subtle traps exploration. \r\n

指出新型的地震属性分析方法一改以往的手工、目测分析方法，充分利用了二维、三维及多维交汇方法，为属性分选、分析提供了便利的操作手段；新型的地震属性方法还运用科学分类方法，综合地震、测井、地质信息，把剖面、平面及分类结果结合到一起，通过三维一体的相互信息映射，在储层预测中的目标初选及目标分析中起到了举足轻重的作用，真正做到了属性分析的科学性、实用性。

In this model, PCA is applied to feature selection, and Multi-layered SOM is designed to subdivide the imprecise clustering in single-layered SOM layer by layer.

模型运用主成分分析算法对输入样本进行特征约简，运用分层思想对分类精度低的聚类进行逐层细分，解决了单层自组织映射分类不精确的问题。

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。