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Python Data Cleaning Cookbook

Python Data Cleaning Cookbook - Second Edition

By : Michael Walker
4.9 (22)
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Python Data Cleaning Cookbook

Python Data Cleaning Cookbook

4.9 (22)
By: Michael Walker

Overview of this book

Jumping into data analysis without proper data cleaning will certainly lead to incorrect results. The Python Data Cleaning Cookbook - Second Edition will show you tools and techniques for cleaning and handling data with Python for better outcomes. Fully updated to the latest version of Python and all relevant tools, this book will teach you how to manipulate and clean data to get it into a useful form. he current edition focuses on advanced techniques like machine learning and AI-specific approaches and tools for data cleaning along with the conventional ones. The book also delves into tips and techniques to process and clean data for ML, AI, and NLP models. You will learn how to filter and summarize data to gain insights and better understand what makes sense and what does not, along with discovering how to operate on data to address the issues you've identified. Next, you’ll cover recipes for using supervised learning and Naive Bayes analysis to identify unexpected values and classification errors and generate visualizations for exploratory data analysis (EDA) to identify unexpected values. Finally, you’ll build functions and classes that you can reuse without modification when you have new data. By the end of this Data Cleaning book, you'll know how to clean data and diagnose problems within it.
Table of Contents (14 chapters)
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13
Index

Taking the Measure of Your Data

Within a week of receiving a new dataset, at least one person is likely to ask us a familiar question – “so, how does it look?” This is not always asked relaxedly, and others are not usually excited to hear about all of the red flags we have already found. There might be a sense of urgency to declare the data ready for analysis. Of course, if we sign off on it too soon, this can create much larger problems; the presentation of invalid results, the misinterpretation of variable relationships, and having to redo major chunks of our analysis. The key is sorting out what we need to know about the data before we explore anything else in the data. The recipes in this chapter offer techniques for determining if the data is in good enough shape to begin the analysis, so that even if we cannot say, “it looks fine,” we can at least say, “I’m pretty sure I have identified the main issues, and here they are.”...

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Python Data Cleaning Cookbook
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