查询词典 sparseness

To obtain a sparseness of support vector for least squares support vector regression, an algorithm called vector base learning is proposed in this paper.

使最小二乘支持向量机的解具有稀疏性，本文提出一种稀疏解算法——矢量基学习。

For the sparseness of oilseed rape stubble and thin stem of benne stubble, their wind-breaking effects were worse than wheat stubble and naked oats stubble.

高度相同时不同类型的留茬比较，莜麦和小麦茬下风速降低幅度较大，植株稀疏的油菜茬和秸秆较细的胡麻茬的防风效果较差。

However, the cells were naive and sparseness in the erigeron extract group, especially more remarkable with a high dose.

灯盏花提取物作用下的细胞相对幼稚、稀疏，高剂量时差异更明显。

To improve performance of Chinese processing applications, we must change this situation, thoroughly think of the linguistics foundation of Chinese processing, and work over linear-grammar that suits to process word neighbor-ship in Chinese by computers. We have gotten many original research results as follows: We introduced the concept of simple-phrase and the method to identify them; We also introduced a smoothing method, which greatly relaxes the sparseness problem in statistic method, based on the similarity of words according to linear dependence of them, and introduced a person-name recognition method based on reliability and a method to recognize new word based on multi-features.

本课题为了提高汉语处理应用软件的性能，打破这一传统，彻底反思汉语处理的语言学基础，研究适合于汉语的、适合于计算机处理的、适合于词语线形关系的文法，创新性地提出了线形文法的思路，并有多方面的原创性成果，包括：提出了简单短语概念并拟订了界定规范并设计了相应的识别方法；提出了基于线性邻接分布特征的词语相似性计算方法，有效的缓解了统计的数据稀疏问题；提出了基于可信度的人名识别方法和多特征集成的新词语识别方法。

Based on ear recognition, an improved NMFSC(Nonnegative Matrix Factorization with Sparseness Constraints) method was proposed by imposing an additional constraint on the objective function of NMFSC, which could capture the semantic relations of coefficient matrix as orthogonal as possible. The interated rules to solve the objective function with the constraint were presented, and its convergence was proved.

针对人耳识别问题，提出了一种改进的稀疏性受限的非负矩阵因子方法，通过增加一个使系数矩阵尽可能正交的约束条件来定义原目标函数，给出求解该目标函数的迭代规则，并证明迭代规则的收敛性。

Based on ear recognition, an improved NMFSC (Non-negative Matrix Factorization with Sparseness Constraints) method was proposed by imposing an additional constraint on the objective function of NMFSC, which could capture the semantic relations of coefficient matrix as orthogonal as possible. The interated rules to solve the objective function with the constraint were presented, and its convergence was proved.

针对人耳识别问题，提出了一种改进的稀疏性受限的非负矩阵因子方法，通过增加一个使系数矩阵尽可能正交的约束条件来定义原目标函数，给出求解该目标函数的迭代规则，并证明迭代规则的收敛性。

First, a non-negative tensor factorization algorithm is improved by imposing sparseness constraints on it. Secondly, the bispectral images of mechanical signals are obtained and stacked to form a third-order tensor. Thirdly, the improved algorithm is used to extract features, which are represented by a series of basis images from this tensor. Finally, coefficients indicating these basis images' weights in constituting original bispectral images are calculated for fault classification.

首先，改进已有的非负张量分解算法，加入稀疏度控制策略；其次，将机械振动信号的双谱图像堆叠为一个三阶张量；然后利用改进后的分解算法对该张量进行二次故障特征提取，得到代表局部特征的"基图像"；最后，通过计算得出基图像在构成原双谱图像中所占的权重，并将得到的权重向量用于故障分类。

Through predicting unrated data, the sparseness of rating data problem had been alleviated and the accurate degree of searching nearest neighbor items had been improved simultaneously.

通过对未评分数据进行预测，缓解了数据稀疏性，提高了最近邻居项目搜索的准确度。

One of the most difficulties in document automatic classification is the high dimension of feature space and the sparseness of text representation vector.

文本自动分类问题的最大特点和困难之一是特征空间的高维性和文档表示向量的稀疏性。

The method is based on the fact that the poststack zero-offset seismic section in a local time window is consisted of some linear events. Using the sparseness discrete τ-p transform and prediction biconjugate gradient algorithm to extrapolate makes the empty traces in the space coordinate reconstruction.

该方法根据叠后零偏移距剖面，在局部时窗内可以看作是一系列线性同相轴的组合，使用稀疏离散τ-p和预条件双共轭梯度算法进行地震道外推，使空间方向的缺失道得到恢复。

Methods: Five patients with parkinsonism or dystonia were assigned to general anesthesia using an modified endotracheal tube.

本实验依照人体实验之相关规定进行，五位患有帕金森氏症或肌张力异常的病人接受神经立体定位手术。

If you can benefit from this book, it is our honour.

如果您能从本书获益，这将是我们的荣幸。