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Elasticsearch 7 Quick Start Guide

You're reading from   Elasticsearch 7 Quick Start Guide Get up and running with the distributed search and analytics capabilities of Elasticsearch

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Product type Paperback
Published in Oct 2019
Publisher Packt
ISBN-13 9781789803327
Length 186 pages
Edition 1st Edition
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Authors (2):
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Douglas Miller Douglas Miller
Author Profile Icon Douglas Miller
Douglas Miller
Anurag Srivastava Anurag Srivastava
Author Profile Icon Anurag Srivastava
Anurag Srivastava
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Toc

Matrix aggregations

Matrix aggregations produce a matrix result from multiple fields. They do not support scripting. Let's cover the different types of matrix aggregations.

Matrix stats

The aggregation computes the following statistics:

  • count: The number of samples per field
  • mean: The average value for each field
  • variance: The deviation of the samples from the mean per field
  • skewness: The measurement quantifying the asymmetric distribution per field
  • kurtosis: The measurement quantifying the shape of distribution per field
  • covariance: The matrix that describes how changes in fields are associated with one another
  • correlation: The covariance matrix from -1 to 1; describes the relationship between field distributions

It...

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