The algorithm is impractical on large data sets, unless it USES dimensionalityreduction, sampling, or partitioning - all of which reduce recommendation quality.
在大数据集的情况下,这样的算法不可行,除非使用维度降低、抽样或区隔——所有这些都降低了推荐的品质。
2
Such technique pursues, through the study of the eigenvalues, the reductionof the dimensionality in the representation space.
这种方法是通过对特征值的研究,追求表征空间的维数压缩。
3
Multidimensional scaling is a powerful tool for dimensionalityreduction in the field of pattern recognition and data mining.