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Python

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Introducing the python for beginners understand in the easy way.

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  • November 19, 2024
  • 5
  • 2024/2025
  • Class notes
  • Mahesh
  • All classes
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Sure, I'd be happy to help you summarize the chapter on "Applications of Python in Machine Learning and Data

Science"! To make the summary engaging and informative, I'll include examples, quotes, and code snippets from the videos.

I'll also use bold text and headings to break up the content and make it
easier to follow.




● Introduction
To start, it's important to note that Python is a popular language for data
science and machine learning due to its simplicity, versatility, and
availability of libraries and frameworks. In this chapter, we'll explore
some of the ways that Python can be used for these purposes.

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Data Cleaning and Preparation

Before we can start building machine learning models, we need to
prepare and clean our data. This often involves tasks such as handling
missing values, dealing with outliers, and transforming variables.




One tool that can help with this is the Pandas library in Python. Pandas
provides data structures and functions for data manipulation and
analysis, making it easier to clean and prepare data for machine
learning.




For example, suppose we have a dataset with some missing values. We
can use the fillna() function in Pandas to fill in those missing values
with a specified value, such as the mean or median of the column.
Here's an example:




import pandas as pd

, 3




# load the dataset
df = pd.read_csv('data.csv')

# fill missing values with the mean of the column
df = df.fillna(df.mean())

The instructor also mentions the importance of understanding the
data and the problem you're trying to solve. "Data science is not just
about crunching numbers, but also about gaining insights and telling
stories with the data," she says.




Exploratory Data Analysis

Once we've cleaned and prepared our data, the next step is to explore
it and gain insights. This can involve tasks such as visualizing data,
calculating summary statistics, and identifying patterns and trends.




One tool that can help with this is the Seaborn library in Python.
Seaborn provides a high-level interface for creating informative and
attractive statistical graphics, making it easier to explore and
communicate insights from the data.

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