We make some improvement in Apriori algorithm . First use the vector data structure reduce the space of the input dataset so it can be put into the main memory and avoid the overhead caused by scanning database many times the efficiency is improved .

对基本的Apriori算法进行研究改进，采用了 向量化的数据 结构，减少了输入数据集的存储空间，可以将数据集放入内存，避免对数据库多次扫描带来的I/O开销，提高了算法的效率。

The proposed model builds a5-dimensional vector on quad-tree structure between two adjacent wavelet decomposition layers .

该模型通过将相邻两分解层的四叉树 结构连接为一个5维 向量。

In the second part many approaches for mutual transferring between vector structure and raster structure have been analyzed synthetically .

第二部分综合分析了 矢量 数据 结构与栅格数据结构转换领域已有的转换算法。

Research of Fingerprint Modulation Method Based on Vector - tree Structure

基于 矢量树 结构的数字指纹调制方法的研究

Jet propulsion technology which control jet direction through vector nozzle structure has been mature in the application of ship .

喷水推进的技术在船舶推进中应用已较为成熟，并可通过 矢量喷口 结构对推进方向进行控制。

The vector system structure and de - couple schemes affecting de - couple factor are studied .

对解耦方式与 矢量控制系统 结构、影响解耦因素进行了探讨。

For hand shape identification the characteristic vector constitute a simple but also have scalability however it will loss some information of palm by a single geometric vector structure .

对于手形识别，虽然特征矢量构成简单而且具有可测量性，但是由单一的几何 矢量 构成 特征，失去了手掌丰富的有效信息。

But most of topographical map database produced by survey department is only cartographic data which is vector data structure but cannot be imported into GIS directly to meet GIS using .

但测绘部门建立的地形图数据库多为单纯的制图数据，虽然与GIS数据一样是 矢量 结构，却无法直接输入GIS以满足应用需要。

Construction of recombinant eukaryotic expression vector and structure prediction of β - CPP dimer

重组β-CPP二聚体真核表达 载体的构建及表达产物的 结构分析

Using vector-grid spatial-overlap analysis to solve the limitation of the grid and general vector data structure in the course of creating prescription it made fertilizer prescription founded on the main factor of soil nutrient and yield-target .

应用基于矢量网格的空间叠加分析方法解决栅格和常规 矢量数据 结构在处方生成中的局限，生成了基于土壤养分和目标产量为主要因素的施肥处方；

Through the analysis of vector fonts ' structure the storage principle as well as the Chinese character vector data we modified the Chinese character vector data ; build a small Chinese character Font .

通过分析 矢量字库的 结构、存储原理以及汉字的矢量数据，我们对汉字的矢量数据进行修改，来建立一个小汉字库，这个小字库供发送方和接收方共同持有。

In this paper we focus on the transcoding between MPEG-2 and MPEG-4 . A motion vector re-use transcoding structure is put forward here and the key algorithms are studied also .

本文主要研究了MPEG-2到MPEG-4的转换编码，提出了运动 矢量映射的转码 结构，并对其中的关键算法进行了研究和实现。

Therefore this paper uses the layering vector data structure as the data store format and maps the spatial data .

为此，本文使用了分层的 矢量数据 结构作为空间数据的存储格式，并结合矢量数据 结构 特点对空间数据进行了映射。

Objective To investigate the effects of DNA vector structure and different routes of administration on the efficiency of induction of immune responses to the HBV surface antigen ( HBsAg ) in mice by DNA immunization .

目的探讨DNA 载体 结构及接种途径对DNA疫苗免疫效果的影响。

The worms ' behavior item collection is described accurately by defining behavior vector structure and the unknown worm behavior profile mining is optimized using genetic algorithms .

通过自定义行为 向量 构造准确描述网络蠕虫行为的项目集，并利用遗传算法优化未知蠕虫行为模式挖掘结果。

The degree of similarity of the question sentence is calculated on the basis of the similarity of the semantic chunk vector structure .

在语义块 向量 结构相似的基础上计算问句的相似度。

The thesis suggests using vector data model to describe the road network because vector structure has advantage in representing network information .

由于 矢量 结构在反映网络信息方面具有独特的优势，考虑采用矢量数据模型来描述道路网络。

It considers that the basic selection foundation of 3D GIS spatial entity data model is the data organization mode base on surface . The data structure of 3D SE is mainly Surface Representation method and the data of SE is embedded into the GIS vector structure .

提出基于面的数据组织方式是三维GIS空间实体数据模型选择的主要依据，三维形体的数据组织以表面表示模型为主，形体数据嵌入到GIS 矢量 结构中。

The study on 3D GIS vector data structure

一种三维GIS 矢量数据 结构的研究&以矿山应用为例

Simulation results demonstrate that the algorithm holds robustness to the condition of communication and the ants carry on various action reasonably under the distributed vector structure of pheromone . ( 3 ) A new mechanism of updating pheromone based on reactive action is presented .

仿真实验表明，该 结构下算法保持有对通信条件的鲁棒性，蚂蚁能够合理地执行各种 任务行为。（3）提出了基于反应型行为的信息素更新规则。

In this paper several GIS vector data structure models are analyzed and discussed deeply also their adaptability on PDA are pointed out .

基于掌上电脑，对几种GIS 矢量数据 组织模型进行了分析和深入讨论，指出了其在掌上电脑上的适应性。

The distance field algorithm based on vector structure data offers the Calculation method of the minimum distances from single points to Geological bodies in 2D spatial data environment which reduces the complex of Calculation .

基于 矢量数据的空间距离场生成方法给出了二维条件下点到各种地质体的最短距离的计算公式，大大简化了计算复杂度。

This is a simple procedure to free up the memory allocated by the runtime to the interface ID vector structure .

这个简单的例程释放运行时分配给接口ID 向量 结构的内存。

Damage diagnosis analysis is performed for continuous beam based on the estimation of residual force vector after the structure id damaged . Also the effect of structural physical factors to diagnosis results is considered based on sensitivity analysis .

基于 结构损伤后残余力 向量的计算，对连续梁进行损伤诊断研究，并根据灵敏度分析来考虑结构物理参数误差对诊断结果的影响。

Raster Structure and Vector Structure in GIS

地理信息系统中的栅格结构与 矢量 结构

After some experiments and programming done an adaptable and completable vector data structure model based on PDA is reached .

通过实验研究与编程实现，得出了一种在掌上电脑上具有较好的完备性和适应性的 矢量数据 组织模型。

RESEARCH FOR DATA TRANSFORMATION METHODS BETWEEN RAFTER STRUCTURE AND VECTOR STRUCTURE IN GIS The Opportunity and Challenge of the Chinese Human Resource Development Rafter China 's Entry of WTO

GIS中 矢量 与 栅格数据相互转换方法研究入世后中国人力资源开发面临的机遇与挑战

Construct and Realize the Model of Spatial Data Conversion Based on Vector Data Structure

基于 矢量 结构的空间数据转换模型构建与实现

A prototype system for statistical / scientific data management based on bit vector storage structure

一个基于位 向量存储 结构的统计与科学数据库管理系统原型

This paper uses flux monitoring to evaluate the flux and improved MRAS ( model referring self-adapted method ) to estimate rotate speed builds asynchronous motor vector control structure of no-velocity sensor and mathematics model of control system .

本文根据用磁通观测器来估算磁通，以及用改进的MRAS（模型参考自适应法）来推算转速，构造了无速度传感器的异步电动机 矢量控制系统 结构，建立了控制系统的数学模型。