查询词典 sparsity

Taking adventage of sparsity of the matrix produced in optimum structural design, a sparse algorithm is suggested in this paper.

文中还结合结构优化设计中线性规划的矩阵稀疏性，提供了一个比较有效的算法。

Experiments show the proposed algorithm can improve data sparsity and scalability of traditional collaborative filtering and provide a better recommendation.

实验结果表明，该算法改善了协同过滤算法的数据稀疏性和可扩展性问题，提高了推荐系统的推荐质量。

In Chapter 5, we consider another way to reduce the size of learning, namely imposing the sparsity of kernel regression machines.

为高效学习特别是大规模的学习问题提供了一条精简的设计思路，其有效性为试验所肯定。

Furthermore, the SDP sparsity technique can greatly improve the efficiency of storage and computing.

根据OPF半定规划模型的特点，采用基于半定规划的稀疏技术，使存储效率和计算性能得以大幅度提高。

It greatly reduces the problem of sparsity of data, because the size of the vocabulary made up of characters is smaller than that formed from words.

由于字的数量远小于词的数量，所以该分类方法与其它在词级别上的分类方法相比，有效地降低了数据稀疏带来的影响。

But the products we produced have some deadly defects: cheap, sparsity of variety, low additional value...

但是我们的产品却有着一些致命的缺点：档次低，品种少，附加值低。。。

The magnitudes of items and users in the system results in the extreme sparsity of user rating data, which makes it difficult to find neighbors effectively.

随着系统中资源数目和用户数目的不断增加，在整个资源空间上用户评分数据极端稀疏，给有效的查找最近邻居带来了很大的困难。

To overcome the difficulty of data sparsity in recommendation systems, a collaborative filtering algorithm based on clustering basal users is presented.

为了降低数据稀疏性的影响，提高推荐系统的推荐生成质量，提出了一种基于多层相似性用户聚类的协同过滤推荐算法。

Firstly, the definition of image representation, measure of sparsity, and the basic methods of sparse representation are reviewed. And then, we analyze the performance of nonlinear approximation of Ridgelet, Curvelet, Contourlet and Bandelet transform.

论文阐述了信号表示的定义、稀疏性度量以及图像稀疏表示的基本理论方法，分析与比较了脊波变换、曲线波变换、Contourlet变换、Bandelet变换各自的非线性逼近性能。

The RIP that was proposed in [18] and [19] is closely related to the incoherency between the sparsity and the measurements basses, providing an efficient way to obtain the sensing matrix that satisfy it.

在文献[18]和[19]中提出的RIP与稀疏度和测量低沉音之间的不相干性密切相关，从而为获得满足它的传感矩阵提供了一种高效的方法。

He and Nina moved to California and lived at 2005 Ivar Street, Apt.

他和Nina搬到加州，并在2005年伊瓦尔街，公寓生活。

Droperidol （ potently inhibits transfected HERGchannels and this is the probable mechanism for QT prolongation.

氟哌利多有效地抑制了转染的 HERG 钾通道，可能是 QT 间期延长的机制。