Book Image

Principles of Data Science - Third Edition

By : Sinan Ozdemir
Book Image

Principles of Data Science - Third Edition

By: Sinan Ozdemir

Overview of this book

Principles of Data Science bridges mathematics, programming, and business analysis, empowering you to confidently pose and address complex data questions and construct effective machine learning pipelines. This book will equip you with the tools to transform abstract concepts and raw statistics into actionable insights. Starting with cleaning and preparation, you’ll explore effective data mining strategies and techniques before moving on to building a holistic picture of how every piece of the data science puzzle fits together. Throughout the book, you’ll discover statistical models with which you can control and navigate even the densest or the sparsest of datasets and learn how to create powerful visualizations that communicate the stories hidden in your data. With a focus on application, this edition covers advanced transfer learning and pre-trained models for NLP and vision tasks. You’ll get to grips with advanced techniques for mitigating algorithmic bias in data as well as models and addressing model and data drift. Finally, you’ll explore medium-level data governance, including data provenance, privacy, and deletion request handling. By the end of this data science book, you'll have learned the fundamentals of computational mathematics and statistics, all while navigating the intricacies of modern ML and large pre-trained models like GPT and BERT.
Table of Contents (18 chapters)

Summary

This chapter has provided an overview of the crucial role data types play in data science, emphasizing the importance of understanding the nature of the data before commencing any analysis. We discussed the significance of asking three key questions when encountering a new dataset: whether the data is structured or unstructured, whether each column is quantitative or qualitative, and the level of data within each column (nominal, ordinal, interval, or ratio).

By completing this chapter, you should be able to identify the types of data they are working with and understand the implications of those data types on their analysis. This knowledge will help you select appropriate graphs, interpret results, and determine the next steps in the analytical process. You should also be familiar with the concept of converting data from one level to another to gain more insights.

With this knowledge, and with the ability to classify data as nominal or ordinal through various examples...