数据空间

GIS数据空间理论与空间分析算法的研究和应用

The Research and Application of Gis ' Data Space Theory and Space Analysis Algorithmic

文章提出了在IBMPCBASIC程序状态下，利用文件空间对BASIC的数据空间作虚拟存储来扩充其空间，即File方法。

This paper proposes a method named File , which uses BASIC data space as the expansion of " fictitious storage " by document space at the state of IBM PC BASIC program .

扩展经典的元组空间模型，构建了一个智能元组空间（IntelligentTupleSpace，ITS），并以此支持了基于共享数据空间的移动agent交互。

The Linda-like Tuple Space is extend to an Intelligent Tuple Space ( ITS ) and the ITS supports the mobile agent share data-space interaction .

许多论文对DSS的理论、系统结构及建立方法等做了论述和研究，从逻辑上将数据库、模型库、方法库和知识库分为三个空间：数据空间、用户空间、方法空间。

There are many papers about the theory of DSS , the architecture of DSS and the construction method . The DSS is divided logically into three spaces : data space , user space and rule space .

基于灰度直方图的FCM分割算法缩小了数据空间，在聚类效率上取得较大的改进，但其仍存在对大噪声比较敏感的缺点。

FCM segmentation algorithm based on the histogram got a narrowed data space that can help it got greater improvement in clustering efficiency . But it has some Applicability in large noise sensitive and considerations on neighborhood informations .

本文简要介绍VSAM文件结构，数据空间，目录，数据保护和VSAM功能。

This paper summaries the structure of VSAM file , and the data space , catalog , protection of data and functions of VSAM .

在前一个模块中，分别采用主因子分析和主成分分析从KES参数中提取特征参数，通过降低数据空间的维数来精简系统。

In the former model , using PCA we extract the features from KES parameters to reduce the dimension of discussed data space .

在其中，主要讨论了CMD文件的建立，即如何合理的划分Ti5410芯片内的程序空间与数据空间。

In this chapter , the creation of CMD file to be discussed is how to divide the data and program space logically in the Ti 5410 chip .

根据场景数据空间位置的相关性，提出了地形块的动态调度策略，并由此策略衍生出了LOD模型切换方法以及碰撞检测的优化方法。

According to the space position relativity of the scene data proposes the dynamic schedule strategy which is based on terrain block , and derives out the optimization method of LOD switch and collision detection .

DGC将数据空间中各数据点之间的相似性定义为数据引力，认为数据空间中任何两个数据点之间都存在数据引力，克服了传统数据挖掘技术中用局部联系的观点对待数据的缺陷。

DGC defines the similarity between data points in data space as data gravitation , and there exist data gravitation between any two data points in data space .

LLE算法针对非线性降维问题，利用线性重构的局部对称性找出高维数据空间中的非线性结构。

Aiming at the problem of nonlinear dimensionality reduction , local linear embedding ( LLE ) algorithm was presented . The nonlinear structure in high dimensional data space was exploited with the local symmetries of linear reconstructions .

采用主成分分析对原始的高维数据空间进行优化，去除了数据间信息重叠，使用wilks准则对主分量进行选择，保证了重构数据具有最佳可分性。

Using principal component analysis to eliminate duplication of information of the original high dimensional data space , and using Wilks criteria to select principal components ensures the reconstruction of data with the best separability .

针对网络连接记录特征属性高维的特点，采用粗糙集属性约简的方法压缩数据空间，然后采用v-SVM两分类方法处理约简和正规化后的数据。

According to the high dimension of network records with feature attributes , the rough set attribute reduction approach is firstly utilized to reducing data space and then the v-SVM algorithm is introduced into processing normalized data set .

在此基础之上，提出两种区间划分方式：将最优区间划分为高密网格和将数据空间划分为单位空间。其次，设计了一种基于最优区间划分的动态聚类算法DOIC。

Then two kinds of interval partition manners are proposed : partitioning the optimal interval into high-density grids and partitioning the data space into unit space . Secondly , clustering algorithm based on optimal intervals division for high-dimension data streams ( short for DOIC ) is proposed .

基于数据空间网格划分的PK-树索引结构

On the PK-tree Index Structure for Grid - based Point Data

基于数据空间融合的全局计算与数据划分方法

A Data Space Fusion Based Approach for Global Computation and Data Decompositions

黄土高原沟壑区通量数据空间代表性研究

Spatial Representation of Flux Data in Gully Region on the Loess Plateau

高维数据空间索引的研究

Study on the index of high dimensional data space

超大数据空间的软件设计与应用

The Design and Application of Large Data Analysis Software

在数据空间中进行数据平滑的新考虑

A new thought for data smoothing in data space

发现高维数据空间流形中有意义的低维嵌入是一个经典难题。

Finding meaningful low-dimensional embedded in a high-dimensional space is a classical problem .

人口数据空间化是数字地球的重要研究内容。

Spatial distribution of population is a key content of " Digital Earth " .

在高维数据空间中，聚类往往只存在于某些子空间中，并且不同的聚类所关联的子空间也存在差异。

In high dimensional space , clusters only exist in some subspaces , and have different subspaces .

描述了存贮文件的结构和适合于小型机的B~+树索引动态组织方案，介绍了外存数据空间的一种组织管理方法，给出了数据库某些基本操作的实现算法。

Management method for data space is provided . Some algorithms for basic data base operations are given .

土地资源管理对我国后续资源卫星数据空间分辨率的需求分析

An analysis of the requirement for spatial resolution of Chinese earth observation satellite after CBERS-1 in land resource management

通过调整划分数据空间的分辨率，使目标函数值最大，从而实现分辨率的自动确定。

The value of the objective function could be maximized through adjusting the resolution ratio of dividing the data space .

这种光滑映射就可以使得在隐空间中相距较近的样本点，经过映射到观测数据空间后，依然相距较近。

This specifies that points which are close in latent space will be still mapped as close in data space .

地震数据空间假频会对地震数据的处理和成象造成不利的影响。

The quality of processing and imaging for seismic data is impaired by the space aliasing present in the seismic data .

拓扑关系自动生成算法的效率直接影响地理数据空间关系的建立和查询等操作的性能。

Automatic topological relation generating algorithm influences directly the performance of such spatial operations in GIS as spatial relation establishment and query .

然而，它并不能保证在数据空间相距较近的样本点经该映射降维到隐空间后依然相距较近。

However , it does not guarantee that points which are close in data space will be close in the latent space .