1) sparsity problems
稀疏性问题
1.
To solve the sparsity problems of recommender systems,a recommendation method is designed by means of the combination of the non-neighbouring sequential pattern mining algorithms and the item-based Collaborative Filtering(CF) recommendation algorithms.
针对推荐系统存在的稀疏性问题,提出将非邻近序列模式挖掘算法与基于项目的协作过滤推荐算法相结合的推荐方法,通过构造Markov概率的路径加权转移矩阵,计算资源被推荐的可能性,向用户进行推荐。
2) large sparse problems
大型稀疏问题
1.
The most popular methods to solve large sparse problems are based on projection techniques on ap-propriate subspaces.
求解大型稀疏问题最流行的方法是建立在子空间投影技术之上的。
4) Aspects subject fo missing
疏漏问题
5) sparse
[英][spɑ:s] [美][spɑrs]
稀疏性
1.
At the same time,the result of the experiment demonstrates that the matrix obtained by using the orthogonal Daubechies wavelet packets to decompose is more sparse.
利用小波—Galerkin积分法,第一次给出了用区间上的小波包解第二类积分方程的算法实例,并与小波解积分方程得到的结果进行比较,实验结果表明条件数更小,稳定性更好;同时讨论了解法中方程组的系数矩阵的稀疏性,小波包得到的矩阵更稀疏。
2.
A pruning algorithm is proposed to enhance computational efficiency and sparse ability.
通过剪枝算法提高其快速性和稀疏性,并用遗传算法搜索向量机的参数,避免了参数选择的盲目性,获得了最优的参数,提高了预测能力。
6) Sparsity
[英]['spɑ:siti] [美]['spɑrsətɪ]
稀疏性
1.
Research of Sparsity and Cold Start Problem in Collaborative Filtering;
协同过滤系统的稀疏性与冷启动问题研究
2.
Owing to its sparsity of structure,new matrix greatly simplifies the projection operation during images reconstruction,which greatly improving the speed of reconstruction.
该矩阵由于其构成的非常稀疏性大大简化了图像重建过程中的投影计算,从而提高重建速度。
3.
Attributing to the merit of the L_1 norm,a good sparsity is achieved by the SHSSVM.
由于L1范数具有诱导稀疏性的本质,使得稀疏隐空间支持向量机获得了良好的稀疏性。
补充资料：稀疏
1.亦作"稀疎"。 2.不稠密。 3.犹言冷落﹐疏远。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条