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 3: Anomaly Detection

Anomaly detection was the original capability of Elastic ML and is the most mature, stretching its roots back to the Prelert days (before the acquisition by Elastic in 2016). This technology is robust, easy to use, powerful, and broadly applicable to all kinds of use cases for time series data.

This jam-packed chapter will focus on using Elastic ML to detect anomalies in the occurrence rates of documents/events, rare occurrences of things, and numerical values outside of expected normal operation. We will run through some simple but effective examples that will highlight both the efficacy of Elastic ML and its ease of use.

Specifically, we will cover the following:

  • Elastic ML job types
  • Dissecting the detector
  • Detecting changes in event rates
  • Detecting changes in metric values
  • Understanding the advanced detector functions
  • Splitting analysis along categorical features
  • Understanding temporal versus population analysis
  • ...