What is PCA? When do you use it?

What is PCA? When do you use it?

题目类型: 技术面试题

这是一道技术面试题，常见于澳洲IT公司面试中。

难度: easy

标签: interviewbit, machine-learning, topic-specific, ai

参考答案摘要

Principal component analysis (PCA) is most commonly used for dimension reduction. In this case, PCA measures the variation in each variable (or column in the table). If there is little variation, it t...

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