BK: Data mining, Chapter 2 - getting to know your data

Why: real-world data are typically noisy, enormous in volume, and may originate from a hodgepodge of heterogeneous sources.

mean; median; mode(most common value); distribution;

Knowing such basic statistics regarding each attribute makes it easier to fill in missing values, smooth noisy values, and spot outliers during data preprocessing.

原文地址：https://www.cnblogs.com/dulun/p/12293674.html

时间： 2024-10-08 15:56:03

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