Applied Data Science with Python and Jupyter by Alex Galea
Author:Alex Galea [Alex Galea]
Language: eng
Format: epub, pdf
Publisher: Packt Publishing
Published: 2018-10-30T16:00:00+00:00
Note
The apply method is great because it can solve a variety of problems and allows for easily readable code. Often though, vectorized methods such as pd.Series.str can accomplish the same thing much faster. Therefore, it's advised to avoid using it if possible, especially when working with large datasets. We'll see some examples of vectorized methods in the upcoming chapter.
Verify the number of samples we've grouped into each age category by typing df.groupby('AGE_category').size() into a new cell and running it:
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Access | Data Mining |
Data Modeling & Design | Data Processing |
Data Warehousing | MySQL |
Oracle | Other Databases |
Relational Databases | SQL |
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