Book Image

Machine Learning with the Elastic Stack - Second Edition

By : Rich Collier, Camilla Montonen, Bahaaldine Azarmi
5 (1)
Book Image

Machine Learning with the Elastic Stack - Second Edition

5 (1)
By: Rich Collier, Camilla Montonen, Bahaaldine Azarmi

Overview of this book

Elastic Stack, previously known as the ELK stack, is a log analysis solution that helps users ingest, process, and analyze search data effectively. With the addition of machine learning, a key commercial feature, the Elastic Stack makes this process even more efficient. This updated second edition of Machine Learning with the Elastic Stack provides a comprehensive overview of Elastic Stack's machine learning features for both time series data analysis as well as for classification, regression, and outlier detection. The book starts by explaining machine learning concepts in an intuitive way. You'll then perform time series analysis on different types of data, such as log files, network flows, application metrics, and financial data. As you progress through the chapters, you'll deploy machine learning within Elastic Stack for logging, security, and metrics. Finally, you'll discover how data frame analysis opens up a whole new set of use cases that machine learning can help you with. By the end of this Elastic Stack book, you'll have hands-on machine learning and Elastic Stack experience, along with the knowledge you need to incorporate machine learning in your distributed search and data analysis platform.
Table of Contents (19 chapters)
1
Section 1 – Getting Started with Machine Learning with Elastic Stack
4
Section 2 – Time Series Analysis – Anomaly Detection and Forecasting
11
Section 3 – Data Frame Analysis

Chapter 10: Outlier Detection

In the first section of this book, we discussed anomaly detection in depth, a feature that allows us to detect unusual behavior in time series data in an unsupervised fashion. This works well when we want to detect whether one of our applications is experiencing unusual latency at a particular time or whether a host on our corporate network is transmitting an unusual number of bytes.

In this chapter, we will learn about the second unsupervised learning feature in the Elastic Stack: outlier detection, which allows us to detect unusual entities in non-time series-based indices. Some interesting applications of outlier detection could involve, for example, detecting unusual cells in a tissue sample, investigating unusual houses, or areas in a local real estate market and catching unusual binaries installed on your computer.

The outlier detection functionality in the Elastic Stack is based on an ensemble or a grouping of four different outlier detection...