This is not only because of the sparsity of the fringed.

这不仅是由于条纹稀疏。

The main disadvantage of the way is the problem of data sparsity.

对于半监督方法，目前存在的一个严重的问题是数据稀疏问题。

Data sparsity problem is a potential challenge of collaborative filtering.

数据稀缺性问题是协同过滤技术面临的主要挑战。

A dense matrix arising from MoM can be stored in sparsity after compressed.

一个由矩量法生成的稠密矩阵经过压缩后，可以稀疏存储。

Whole sparsity and local sparsity are proposed aiming at the sparsity of SAR images.

并针对SAR图像的稀疏性，提出了整体稀疏性与局部稀疏性的概念。