sparseness
英
美
网络 稀少; 稀疏; 稀疏性; 稀疏度; 稀疏化
COCA.37869
英英释义
noun
双语例句
- 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。 - 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。 - 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。 - 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。 - 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。 - 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。 - 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。 - 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。 - 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。 - 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