1·Aiming at the problem of data sparsity for collaborative filtering, a novel rough set-based collaborative filtering algorithm is proposed.
针对协同过滤中的数据稀疏问题，提出了一种基于粗集的协同过滤算法。
2·This is not only because of the sparsity of the fringed.
这不仅是由于条纹稀疏。
3·The sparse vector method enhances the efficiency of matrix solution algorithms by exploiting the vector sparsity. It has been successfully applied to many problems arising in power systems.
稀疏向量法通过利用向量的稀疏性来提高求解矩阵方程的效率，它被成功地应用到电力系统分析的众多问题。
4·In research, sample data were mapped to sparse feature space to prevent the loss of SVM's sparsity when the kernels were fused.
为避免在进行核融合时，支持向量机稀疏性的缺失，提出将数据映射到稀疏特征空间进行研究。
5·It is hard to cluster high-dimensional data using traditional clustering algorithm because of the sparsity of data.
在高维空间中，由于数据的稀疏性，传统的聚类方法难以有效地聚类高维数据。
1·If you can implement your own and if there is some guaranteed sparsity (to either 1s or 0s) then you might be able to offer better than linear performance.
如果你能实现你自己的，如果有一些保证稀疏性(或1或0)然后你可以提供更好的性能比线性。
2·The experimental results show that the optimized algorithm can increase prediction precision, by way of reducing sparsity and cold-start problems, and realizing real-time recommendation effectively.
实验表明，该算法通过有效降低稀疏性、冷开始和实现实时推荐，提高了预测精度。