查询词典 involutory matrix

In virtue of decomposing the matrix,we demonstrate the principle and the theory foundation about the reduce of dimensions based on Fisher.

实验结果表明这种特征降维模式在文本分类的准确性方面效果较好。

For acquiring the railway passenger's OD matrix accord with factual traffic flow, we utilize the method of traffic flow suit to railway fieldwork. Being directed against the errors of theory traffic flow and factual traffic flow and make use of error co...

为求出与实际的交通量相匹配的铁路旅客OD流量，利用和铁路运输现场实际工作相吻合的交通配流方法，针对理论分配交通量和实际交通量的偏差程度、采用适时修正的方法进行迭代运算，直至得到一个满意的解为止。

First, the time series model of the random road roughness running by construction machinery is built up based on the measured data of the random road roughness and by means of the basic theory and method of the time series analysis. A real-time parameter estimation method of fuzzy weighted recurrence least square algorithm is represented through analyzing the conventional recurrence least square algorithm. Then, the new recurrence algorithm and the on-line tuning method of the weighted matrix are given out, and computer simulation is performed.

首先，以实测的地面随机不平度数据为依据，应用时序分析的基本理论和方法，建立了工程机械行驶地面随机不平度的时间序列模型，并在分析传统参数估计方法递推最小二乘算法的基础上，提出了模糊加权递推最小二乘算法的参数实时估计方法，给出了在此基础上的递推算法及加权矩阵的实时在线整定方法，并对其进行了计算机仿真研究。

Body parts of race cars and some automobiles are composites made of glass fibers in a thermoset matrix.

竞赛用汽车和某些机动车的车体部件是由含玻璃纤维的热固塑料基材制成的。

Two new kinds of thermoset matrix composite coatings have been developed. Optimal component has been determined by means of orthogonal experimental method, with emphasis on microstructure, corrosion-resistance and tribological properties.

研究开发了两种新型的热固性聚合物基复合材料涂料，并采用正交试验法确定复合涂料的最佳成分，对其显微结构、腐蚀性能、摩擦学性能进行了研究。

This is an important type of thermosetting epoxy resin composite materials are the most widely used polymer matrix resin.

环氧树脂是一类重要的热固性树脂，是聚合物复合材料中应用最广泛的基体树脂。

The matrix produced by using the method of the invention can realize an LDPC decoding circuit with low complexity and high throughput rate.

采用本发明方法构造出来的矩阵可以实现低复杂度和高吞吐率的LDPC解码电路。

A new de-correlation DOA estimation algorithm was proposed. It was based on the cross-correlation vector Toeplitz matrix reconstruction.

针对相干信号源的波达方向角估计问题，提出了一种能有效解相干的互相关矢量Toeplitz矩阵重构算法。

In this paper, we propose a technique based on singular-value decomposition of the Toeplitz matrix to minimize the effect of rends superimposed on long-range correlated noise.

为了消除这种影响，本文提出了一种新的计算方法：在去趋势分析之前，先用特征值分解的方法，从仿真信号中分离出外界的趋势，再应用去趋势法进行计算。

Fast algorithms for the minimal norm least square solutions of linear equations which coefficients are m×n Toeplitz matrix are given.

给出了求以m×n阶Toeplitz矩阵为系数阵的线性方程组极小范数最小二乘解的快速算法。

However it can often be frust ating for a child when people are unable to pronounce their name.

但它往往可以令人沮丧的一个孩子当人们无法断言他们的名字。

All these compounds were obtained from this genus for the first time. Compound, 4-cumylphenol, was a new nature product.

所有化合物均为首次从本属海藻中分离得到，其中4cumylphenol为新天然产物。