sparseness

1. In this paper, an improved algorithm of image feature extracting for independent component analysis was proposed based on basic functions'maximization of sparseness.
   利用基函数稀疏性的极大值特点，本文提出一种改进的基于独立分量分析的图像特征提取算法。
2. Then, it is expatiated that owing to their sparseness, new kinds of matrices greatly simplify the projection operation during image reconstruct.
   同时，进一步说明由于这两种矩阵构成元素的稀疏性可以简化图像重建过程中的投影计算，从而提高重建速度。
3. General clustering approaches, such as distance-based and statistics-based, are not adapted to classification of outliers because of their characteristic of fewness data and sparseness.
   离群数据是数据中的小模式，因其固有的少数据与稀疏性等特征，使得基于距离或基于统计等常规聚类方式不适用于对离群数据的分类。
4. This paper proposes a new method based on mixing matrix estimation for underdetermined blind speech separation, aiming at speech signals under weak sparseness.
   针对语音信号的弱稀疏性，提出一种新的基于混合矩阵估计的欠定语音盲分离方法。
5. An improved active array errors calibration algorithm using the sparseness of mutual coupling matrix
   一种利用互耦矩阵稀疏性的阵列误差有源校正改进算法
6. The experiments on several pattern classification problems show that HS-LSSVM has high sparseness while holds good classification performance and its sparse process is fast.
   对多个分类问题的测试表明，HS-LSSVM具有稀疏率高，分类性能强，且稀疏化速度较快等优点。
7. The hierarchical clustering method is applied to deal with the problem that the solution of MLS-SVM is lack of sparseness.
   运用谱系聚类方法解决多核最小二乘支持向量机的解缺乏稀疏性的问题。
8. Sparseness Analysis of Radar Echoes and its Application in Ship and Chaff Discrimination
   雷达回波稀疏性分析及其在舰船与箔条云鉴别中的应用
9. Because the data it used was not users'rating but users'browse route, the problem of data sparseness and initial rating was resolved.
   由于数据不是简单的用户评分，而是用户浏览网页的路径，这样就解决了数据稀疏问题和最初评价问题。
10. Application of Combined Norm Constrained Sparseness Spike Inverse
    L1-L2范数联合约束稀疏脉冲反演的应用
11. Based on the clustering method, the mixing matrix was first estimated by a new potential function using the sparseness of sources.
    首先，利用变换后信源的稀疏特征，采用一新的势函数通过聚类算法估计混叠矩阵。
12. At the same time a new solution to the sparseness of training text is put forward.
    同时对训练文本的稀疏问题提出了一种新的解决方案。
13. The scheme resolves the problem of high dimension and large sparseness in basket data and improves efficiency of clustering.
    使用了一种新的事务表示法，解决了购物篮数据的高维性和稀疏性问题。并对算法进行了相应的改进，从而提高了聚类速度。
14. This strategy can reduce the data sparseness and keep the search efficiency meanwhile.
    这种优化策略可以在保证该算法数据查找效率不变的同时，进一步减少数据稀疏，提高空间利用率。
15. A genetic algorithm with adaptive evaluation function is presented to deal with data sparseness problem in automatic semantic tagging.
    针对数据稀疏问题，采用适应度函数较灵活的遗传算法做语义的自动标注；
16. The calculation amount and local minimum are reduced taking advantage of sparseness of significant coefficients by wavelet transform.
    利用多尺度之间的内在联系及小波域中重要系数的稀疏性，有效改进了局部极值、计算量等问题。
17. Wavelet-based Non-negative Matrix Factorization with Sparseness Constraints for Face Recognition
    基于小波和非负稀疏矩阵分解的人脸识别方法
18. The data sets have features such as high-dimensional, sparseness and binary value in many clustering applications.
    在许多聚类应用中，数据对象是具有高维、稀疏、二元的特征。
19. NMFs can control sparseness explicitly and find parts-based representations for face images.
    非负稀疏矩阵分解能显示地控制分解稀疏度和发现人脸图像的局部化表征；
20. This paper describes a method of extrapolating seismic traces based on the sparseness discrete τ-p transform.
    这里研究的是一种基于稀疏离散τ-p变换的地震道缺失重建方法。
21. Sparseness of flow networks is revisited from the viewpoint of efficiency.
    我们采用效率的观点，讨论了流网络的稀疏性问题。
22. Experimental results show that Matrix filling method can effectively relieve the data sparseness problem in recommendation system.
    实验结果表明：该方法可以有效缓解推荐中数据稀疏性问题。
23. This approach make use of the sparseness of speech signals and the independent characteristics of speech signals. Use the fast quasi-newton method, it greatly simplify the Hessian matrix, and it also greatly increases the speed of operation.
    该方法运用语音信号的稀疏性和语音信号之间相互独立的特性，使用快速相对牛顿法，使得在牛顿法中，求海森阵的步骤大为简化，大大提高了运算速度。
24. With the increasing number of users and projects, sparseness problem will become more and more serious.
    数据稀疏是影响推荐系统质量的瓶颈问题，随着用户和项目的数量不断增加，稀疏性问题将会越来越严重。
25. The array antenna with low side lobe is designed by employing the Taylor synthesis and density taper sparseness with an overall consideration of the radiation and scattering performance. The side lobe of the array antenna is optimized by random search.
    在综合考虑辐射和散射特性的基础上利用泰勒综合和密度锥削稀疏技术设计了低副瓣电平阵列天线，并采用随机遍历算法对阵列天线副瓣进行了优化。
26. Summing up the history and the current development of the personalized recommendation system, and pointing out the two bottleneck problems of "cold start" and "data sparseness" existing in the collaborative filtering recommendation algorithm. 2.
    本文主要做了以下研究工作：1.对个性化推荐系统的发展历史及现状进行了综述，指出了协同过滤推荐算法中存在的冷开始和数据稀疏性两大瓶颈问题。
27. But it also has many problems, such as data sparseness problem, the system scalability problem and time factor problem.
    但协同过滤推荐算法还不够成熟，仍然存在一些问题，如数据稀疏性问题、系统的可扩展性问题和时间因素问题等。
28. K-space data has sparseness after transformation, in order to achieve sparse data space, we can use wavelet transform to transform the K-space data, then use the sparse sampling imaging.
    K空间数据具有变换稀疏性，可使用小波变换对K空间数据进行变换，得到具有稀疏性的数据空间，再进行稀疏采样成像。
29. Data sparseness led by the lack of training data restricts the promotion of the supervised methods.
    由训练语料不足导致的数据稀疏问题限制了有指导方法的推广。
30. But traditional collaborative filtering algorithm has the shortcomings of sparseness, expansibility, and synonymy.
    但传统的协同过滤算法存在着稀疏性、扩展性和同义性的问题。

noun

1. the property of being scanty or scattered

   Synonym:    sparenesssparsitythinness