• 1. reduce dimensionality: 主成份发对变量简化
• 2. reduce of perceived dimensionality: 感知降维
• 3. Dimensionality Reduce: 数据降维技术 | 维数约简

• 1.They could be used directly as a projection basis to reduce dimensionality, but it needs to consider how to convolve them properly with the data you want to project.
  他们可以直接使用作为预测的基础上，以减少维数，但它需要考虑如何卷积的数据要妥善项目。
  dict.yoduao.com
• 2.Multidimensional scaling to simplify multidimensional data is an attempt "to reduce the dimensionality of data by finding key attributes defining most of the behavior, " says Venkatasubramanian.
  用文卡的话说，简化多维数据的多维标度就是试图“通过找出定义大多数行为的关键属性来降低数据的维数”。
  dict.yoduao.com
• 3.The algorithm is impractical on large data sets, unless it USES dimensionality reduction, 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。
  dict.yoduao.com

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