Book Image

Time Series Indexing

By : Mihalis Tsoukalos
Book Image

Time Series Indexing

By: Mihalis Tsoukalos

Overview of this book

Time series are everywhere, ranging from financial data and system metrics to weather stations and medical records. Being able to access, search, and compare time series data quickly is essential, and this comprehensive guide enables you to do just that by helping you explore SAX representation and the most effective time series index, iSAX. The book begins by teaching you about the implementation of SAX representation in Python as well as the iSAX index, along with the required theory sourced from academic research papers. The chapters are filled with figures and plots to help you follow the presented topics and understand key concepts easily. But what makes this book really great is that it contains the right amount of knowledge about time series indexing using the right amount of theory and practice so that you can work with time series and develop time series indexes successfully. Additionally, the presented code can be easily ported to any other modern programming language, such as Swift, Java, C, C++, Ruby, Kotlin, Go, Rust, and JavaScript. By the end of this book, you'll have learned how to harness the power of iSAX and SAX representation to efficiently index and analyze time series data and will be equipped to develop your own time series indexes and effectively work with time series data.
Table of Contents (11 chapters)

Summary

In this chapter, we learned the basics of time series, indexing, and distance functions. Although the theoretical knowledge included in this chapter remains valid and relevant no matter what programming language is used, alternative ways and packages to achieve the presented tasks in Python exist, as well as other programming languages. What remains unchanged is the validity of the approach – you must read a text file from disk in order to use its data, no matter the programming language – and the logical steps needed to perform a task, such as the visualization of a time series. This means that if you know an alternative way to load a text file from disk in Python, feel free to use it if it allows you to perform the next task at hand. If you are an amateur Python developer, I would suggest that you follow the book’s suggestions until you become more competent with Python. After all, the used Python packages are the most popular ones in the Python community...