four vector

Vegetation with multi-plant species can be described by points in multi-species space, or multi-component vectors, m-vectors.

提出植被分析的新数学方法——多元向量分析法。

After adding the concepts of meta-vector,sub rule,parent rule,we consider an improved mining method of association rules—Improve algorithm.

本文以Apriori算法中频繁项集的概念为基础,在加入了元向量、子规则、父规则等概念后,提出一种关联规则挖掘的改进方法(Improve算法)。

Research on solution to robotic inverse kinematics based on quaternion-vector

基于四元数向量的机器人运动学逆解研究

Vector is a useless survival, or offshoot from quaternions.

向量是无用的幸存物或四元数的无价值的支流。

Close-Form Solution of Absolute Orientation Based on Dual Quaternion

基于对偶四元数的绝对定向直接解法

Passive Directional Method Based on Arbitrary Four-sensor Vector Sound Intensity Array and Its Experimental Investigations

任意四元声强向量阵被动定向方法和实验研究

The norm of a quaternion is similar to that of a vector.

四元数的平均值与矢量的有点相似。

The criterion of equality of two quaternions is that their scalar parts shall be equal.

两个四元数相等的准则是，它们的数量部分相等。

Pointing Error Analysis of a Radio Telescope Using Quaternion

基于四元数的射电望远镜指向误差分析方法

A Study of the Theory of Orientation in Photogrammetry Based on the Description of Quaternion;

基于四元数描述的摄影测量定位理论研究

Multi-parameter estimation of harmonics based on quaternion matrix

基于四元数矩阵的谐波信号多参量联合估计

Analysis of Ordinal and Continuous Multivariate Longitudinal Data;

含有有序变量和连续变量的多元纵向数据分析

Research of Metadata Management and Replication Algorithm for Massive Data;

面向海量数据的元数据管理和复制算法研究

An expression that is the sum of a real number and a vector and that contains four terms, one real and three imaginary.

四元数一实数和一矢量的和的表达式，有四个项，一个为实数项，另外三个为虚数项

Multi-Parameters Estimation of Harmonics and Vector-sensor Array Based on Quaternion;

基于四元数的谐波信号与矢量阵列信号多参量估计算法研究

Admiral, we have enemy ships in sector 47.

元帅，四七区方向有敌机

Algebraic method for least squares problems in quaternionic quantum theory

四元数量子理论中最小二乘问题的代数方法(英文)

For arrays this template is called a dope vector or information vector.

我们把这个属性单元称为数组的内情向量或信息向量。

On the Surrounding Integration and Its Applications

二元向量函数的环绕积分及其应用(英文)

Description of products' quality information based on object oriented metadata

面向对象元数据技术的产品质量信息描述