To mitigate the problem, standardize all the features and put them on equal footing as a preprocessing step.
为了缓解这个问题，标准化所有特征并将它们置于平等地位，作为一个预处理步骤。
Background subtraction technique has been widely used in many vision systems as a preprocessing step for object detecting and tracking.
背景差异抠图算法在许多视觉系统中因被用作物体跟踪、检测的预处理步骤而被广泛使用。
Feature selection is frequently used as a preprocessing step to text classification, which is effective in reducing dimensionality and increasing classification accuracy.
特征选择是文档分类中常见的预处理工作，通过对文档特征空间降维，可以提高文档的分类性能。
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