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

Using decision trees for regression

As we have discussed in the preceding chapters, regression is a supervised learning technique. As discussed in Chapter 11, Classification Analysis, the goal of supervised learning is to take a labeled dataset (for example, a dataset that has features of houses and their sales price – the dependent variable) and distill the knowledge in this data into an artifact known as a trained model. This trained model can then be used to predict the sales prices of houses that the model has not previously seen. When the dependent variable that we are trying to predict is a continuous variable, as opposed to a discrete variable, which is the domain of classification, we are dealing with regression.

Regression – the task of distilling the information presented in real-world observations or data – is a field of machine learning that encompasses techniques far broader than the decision tree technique that is used in Elasticsearch's...