查询词典 sparse matrix

Image sparse representation via combined transforms means that an image is sparsely represented by overcomplete dictionary combined by several transforms.

组合变换图像稀疏表示通过几种变换的级联来构造超完备字典，实现图像的稀疏表示。

The spare decomposition method of overcomplete image sparse representation is studied. And a multi-atom matching pursuit method based on incoherent decomposition of redundant dictionary is proposed.

1对超完备图像稀疏分解算法进行了研究，提出了一种基于冗余字典非相干分解的多原子匹配追踪图像稀疏分解算法。

The preconditioned conjugated gradient method is a very efficient iterative method for solving large sparse linear equations.

预处理共轭梯度法是求解大型稀疏线性方程组的极为有效的迭代法。

Results It showed that the prolabium of complete BCL had no muscle, there were only weblike collagen fibers of bundles of them, capillaries, fats and fats and fiber－blasts. There were muscle fibers in prolabium and bridges of incomplete BCL,but ultra structure variations were found. The prolabium of complete BCL operated on with straight line suture method had muscle fibers proliferated from the lateral lips, but the fibers were sparse and also had ultra structure variations.

结果 发现完全性双侧唇裂的前唇部无肌纤维，双侧不完全性唇裂的前唇及桥部有少量肌纤维，但其超微结构有变异；用直线缝合法修复的完全性双侧唇裂的前唇部，有从侧唇增生的肌纤维，但稀少，超微结构亦有变异。

Culm sheaths without spots, thickly pruinose and with sparse, brown setae, margins distally pink, ligules ca.

竿箨没有斑点，厚厚具粉霜和有稀少，棕色刚毛，粉红色的上部边缘，叶舌约5毫米；叶鞘的叶耳截形到有拱顶，1-2.5毫米 7 P。

Resultantly, the album has a very laid-back and natural feel with appropriately sparse instrumentation.

结果整张专辑鲜有乐器伴奏，完全是以一种慵懒，自然的方式呈现。

These abnormal changes mainly occurred at two stages:(1) at meiotic prophase, almost half of Peiai 64S microsporocytes exhibited aberration, with sparse free ribosomes, underdeveloped mitochondria and many swollen endoplasmic reticula.

这些变化主要发生在两个阶段：（1）减数分裂前期，约半数的小孢子母细胞的胞质出现异常，游离核糖体稀少，并具有不发育线粒体和大量泡状内质网。

Based on the property of Ridgelet sparse representation to line singularities, a blind digital image watermarking algorithm is proposed.

利用脊波变换对直线状奇异特征的稀疏表示特性，提出了一种盲数字图像水印算法。

Based on the operation rules of generalized multiplication and generalized addition,the improved Gaussian elimination algorithm is applied in power system topology analysis,meanwhile the sparse technique and sectionalization technique are introduce to raise efficiency of topology analysis.

根据广义乘法和广义加法的运算规则，将改进的高斯消元算法应用于电力系统拓扑结构分析中，并引入稀疏、分块处理等技术提高了上述拓扑分析的效率。

The study reveals that the secondary xylem of 6 mangrove species of Sonneratia possesses the following characteristics:the diameter of vessel is small,the distribution frequency of vessel is high,the reperforating rate is high,the wall of vessel is thick,the wall of fibre is relatively thick and the wood parenchyma is short or sparse,whish is suitable with the environment.

应用光镜及扫描电镜对生长在热带、亚热带海岸潮间带的 6种海桑属红树植物的次生木质部进行了解剖学研究表明：海桑属 6种红树植物的次生木质部具有导管直径小，导管分布频率高，复孔率高，导管壁厚和纤维壁较厚且具次生加厚，木薄壁组织缺乏或稀少等与环境相适应的特点。

My father is over 60 years old, and he lifts weights every day.

我爸爸六十多岁了，他每天都练习举重。

Then in a serious tone she declared:"It doesn't pay, dear boy, to look like a ninny with one's wife the first night."

两眼湿润了，她把身子蜷得很小，这样似乎可以更好地闻闻自己。