null space

1. Feature Extraction Method of LDA Based on Symmetrical Null Space Criterion
   对称零空间准则下的LDA特征抽取方法
2. An approach for face recognition based on fusion of complex wavelet and null space discriminant projection embedding
   融合复小波与零空间判别投射的人脸识别方法
3. The Violation Correction Null Space Method of Dynamical Equation of Flexible Multi-body Systems
   求解多柔体系统动力方程的违约修正零空间法
4. The method mainly adopts the projected gradient technique. Through calculating the fundus of the null space of matrix A in the constraint, the direction set becomes a positive spanning set of R~ ( n-m).
   其中主要是采用投影梯度技术，通过计算约束条件中矩阵A的零空间的基底，使得实施过程中所选用的方向集是R~（n-m）中的一个正跨越集。
5. A special smooth filtering operator is used to eliminate the pseudo-static null space phenomenon.
   其中对产生伪静校正量的零空间现象进行空间平滑滤波剔除。
6. Face recognition combining the null space approach and the fractional LDA
   结合零空间法和F-LDA的人脸识别算法
7. Then, combined the new null space method with F-LDA ( fractional LDA) algorithm, a completely new feature extraction algorithm for face recognition was given.
   然后把这种新的零空间法与F-LDA（FractionalLDA）算法相结合，得到一种对人脸识别更有效的特征提取方法。
8. First, by redefining the within class scatter matrix and the between class scatter matrix, a new null space method was presented.
   首先，通过重新定义样本的类内散布矩阵和类间散布矩阵，提出了一种新的零空间法。
9. The behaviour of the solution of this problem and the null space of integral equations are also discussed.
   文章建立了与此边值问题对应的积分方程组，并讨论了此问题解的性质及对应的积分方程零空间的性质。
10. The path is defined as linear combination of a sequence of conjugate directions which are obtained by applying conjugate direction method to the approximate quadratic function in the null space.
    将共轭方向法应用于零空间中的近似二次模型，得到一组共轭方向序列，共轭方向序列生成了共轭梯度路径。
11. The Right Null Space of Rational Matrix and Decoupling
    有理函数矩阵的右零空间和解耦
12. A new approach to solving nonlinear bifurcation problems with two-dimensional null space
    计算二维零空间的非线性分歧问题的新途径
13. It transforms the double-differential carrier observation equation using null space transformation so that it need not to resolve real-time three-dimensional position parameters.
    对单个历元的双差载波相位观测方程进行零空间变换，避免了实时变化的三维位置参数求解；
14. Experiment results show that weighted null space method is an excellent face recognition method.
    实验结果表明，加权零空间法是一种很好的人脸识别方法，它能在保留特征向量个数很少的情况下达到很高的识别率。
15. Analysis of a class of nonlinear bifurcation problems with two-dimensional null space
    一类具有二维零空间的非线性分歧问题分析
16. An exchange type null space method for general quadratic programming problems
    一般二次规划问题的交换型零空间方法
17. Nonlinear structural analysis algorithm based on the null space basis
    基于零空间基的非线性结构分析方法
18. Based on mean theorem, the method combines Jacobian's eigenvalue with its eigenvector to form a null space vector of redundant robot.
    该算法根据均值定理，利用雅可比矩阵的特征值及所对应的特征向量，构成冗余度机器人的零空间矢量；
19. They are null space parallel algorithm, Greville parallel algorithm and divide and conquer parallel algorithm.
    它们是零空间并行方法，Greville并行算法和分而治之并行算法。
20. It is experimentally proved that the method removes null space, avoids degenerative stack energy, speeds convergence and makes Monte Carlo technique result in global optimal solution.
    实验证明，该方法可消除零空间现象，避免了叠加能量退化，加快了收敛速度，较好地保证MonteCarlo技术搜索到全局最优解。
21. Based on the basis of null space and M-P inverse theorem, a unified incremental solution formulae, expressed as the null space basis of the augmented matrix, were firstly formulated herein for the incremental equilibrium equation at the limit point and non-critical points.
    根据零空间基和M-P广义逆理论，推导了结构非线性增量平衡方程极值点与非临界点解的统一形式，并直接表示为增广矩阵零空间基的形式。
22. Then it is proved that all parity checks can be generated from the basis of the left null space of the polynomial matrix [ C '( zI-A)'].
    由此出发，证明了只要得到多项式矩阵[C'（zI-A）']'的左零空间的基，则可得到所有的误差检验式；
23. In statics estimation using Monte Carlo technique, there always occurs null space phenomenon, namely equal time shifts for shot-point static correction or receiving-point static correction.
    利用MonteCarlo技术估算静校正时总会出现零空间现象，即炮点静校正量或检波点静校正量作相同时移。
24. Using Poincare maps and Lyapunov exponents, the motion state ( regular or chaotic motion) of the redundant robot was numerically simulated, and the relationship between its self-motion state and its vectors in the null space was obtained.
    通过Poincare映射图和采用最大Lyapunov指数方法，对平面3R刚性冗余度机器人零空间运动状态（规则或混沌运动）进行了数值模拟，获得了它的自运动状态与其零空间中的矢量之间的关系。
25. Null space pursuit, proposed in recent years, is an adaptive narrow-band signal analysis method based on a local singular linear operator. This algorithm can design a local singular linear operator, which depends on signal model, in order to decompose complicated signal.
    零空间追踪算法是近几年提出的一种基于局部奇异线性算子的自适应窄带信号分析方法，该方法可以依据不同的信号模型，设计出相应的奇异算子，从而达到分析信号的目的。
26. Taking the local null space method as an example, the computational and theoretical foundation of local discriminant subspace methods is investigated.
    本文以局部判别零空间为例，研究了局部判别子空间方法相关的计算和理论基础。
27. We showed that every sample in a given class produces the same unique common vector when they are projected onto the null space of the within-class scatter matrix.
    本文证明了对给定的某一个类别，将其每个样本投影到类内散度矩阵的零空间时，可得到同一个唯一的平凡向量。
28. The new method considers the separability from a global viewpoint to some extent, which can make full use of the discriminative information in both null space and non-null space of within-class scatter matrix.
    该方法充分利用了类内散布矩阵零空间和非零空间中所包含的有用辨别信息，获得了良好的识别性能。
29. The feature is extracted from the null space which has discriminative information of intraclass compactness matrix in this method. The experiment results show this method has good performance. 4.
    该方法从KMFA类内紧凑矩阵具有判别力的零空间中提取出特征，取得了好的识别效果。
30. And then they put forward the Null Space Pursuit algorithm.
    之后，他们又在该算法基础上提出了零空间追踪算法。

noun

1. a space that contains no points