The time complexity and space complexity of the traditional attribute reduction algorithm using discernible matrix are quite big.
传统的利用区分矩阵进行属性约简算法，其时间复杂度和空间复杂度很大。
A new parallel in time and in space relaxed Newton method and a new parallel in space relaxed Newton method for admittance matrix reduction are described in detail.
较详细地描述了用于暂态稳定性计算的时间空间并行松弛牛顿方法以及用于收缩导纳矩阵计算的空间并行松弛牛顿方法。
Since it doesn't need to generate the medial link of discernible matrix, so it can spare space and time, and raise the efficiency of the program run.
由于不用生成分明矩阵的中间环节，这样便节省了空间和时间，提高了运行效率。
In finite element analysis, the bandwidth of the whole stiffness matrix is reduced by optimizing the node numbering, thereby the needed memory space is saved and the calculation time is reduced.
在有限元计算过程中，可通过优化节点编号来减少整体刚度矩阵的带宽，从而节约存储空间，减少有限元分析的计算时间。
Since it does not need to calculate sensitivity matrix and the relaxation technique is used, this algorithm is advantageous to save computational time and memory space.
由于不需计算灵敏度逆矩阵和采用松驰技术，本算法具有计算速度快、收敛性能好和占用空间少的优点。
The linear time invariant equivalent circuit model is established by introducing the PARK transformation to the space vector modulated matrix converter.
将PARK变换引入到空间矢量调制矩阵变换器中，建立了矩阵变换器的线性定常电路模型。
The basic elements of landscape pattern include patch, corridor and matrix. The pattern of their configuration of time and space is landscape structure.
景观空间结构的基本组成要素包括斑块、廊道和基质，它们的时空配置形成的镶嵌格局即为景观结构。
Based on research of so called space time DOA matrix method, we propose several of its improved and generalized forms in this paper.
本文在对时空DOA矩阵方法进行详细分析的基础上，提出了该方法的几种改进与推广形式。
A new hybrid space-time coding approach is presented in this paper. The properly designed code matrix and group interference suppression method are used in this approach.
利用分组干扰抑制的方法，通过合理地设计空时码的发射码矩阵和对阵列天线进行了子阵划分，提出了一种新的混合型的空时编码方法。
The movement of multi-rigid-body system interconnected by smooth hinge moving in space and plane are deeply studied with the discrete time transfer matrix method of multibody system.
深入探讨多体系统离散时间传递矩阵法对平面、间刚体光滑铰多体系统运动响应的研究。
There are two important factors that affect the performance of Space-Time Adaptive Processing(STAP), that are steering vector mismatch and covariance matrix mismatch.
导向矢量失配和协方差矩阵失配是影响空时自适应处理（STAP）性能的两大主要因素，基于在最差情况下的性能最优，提出了一种稳健的STAP算法。
Together, they form a finite set of space-time similar to the matrix, which is their set of permutations and combinations.
它们一起组成类似矩阵的时空有限集，即它们的排列组合集。
The output voltage waveforms of matrix converter which is based on the space vector modulation are analysed under the unbalanced input voltage. A time-variant modulation ratio method is proposed.
在非对称输入电压情况下，对基于双空间矢量调制的矩阵变换器的输出电压波形进行了分析，提出了利用时变调制比改善输出电压波形的方法。
Methods used now almost stay in memory, and need to create discernibility matrix, so that it may lead to some demerits as time and space complex.
分析了目前常用求属性核方法，大都建立在内存中，需要构造差别矩阵，存在时空复杂度较大的不足。
Methods used now almost stay in memory, and need to create discernibility matrix, so that it may lead to some demerits as time and space complex.
分析了目前常用求属性核方法，大都建立在内存中，需要构造差别矩阵，存在时空复杂度较大的不足。
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