A very important part of the querying process in Apache Lucene is scoring. Scoring is the process of calculating the score property of a document in a scope of a given query. What is a score? A score is a factor that describes how well the document matched the query. In this section, we'll look at the default Apache Lucene scoring mechanism: the TF/IDF (term frequency/inverse document frequency) algorithm and how it affects the returned document. Knowing how this works is valuable when designing complicated queries and choosing which queries parts should be more relevant than the others. Knowing the basics of how scoring works in Lucene allows us to tune queries more easily and the results retuned by them to match our use case.
Mastering Elasticsearch - Second Edition
Mastering Elasticsearch - Second Edition
Overview of this book
Table of Contents (19 chapters)
Mastering Elasticsearch Second Edition
Credits
About the Author
Acknowledgments
About the Author
Acknowledgments
About the Reviewers
www.PacktPub.com
Preface
Free Chapter
Introduction to Elasticsearch
Power User Query DSL
Not Only Full Text Search
Improving the User Search Experience
The Index Distribution Architecture
Low-level Index Control
Elasticsearch Administration
Improving Performance
Developing Elasticsearch Plugins
Index
Customer Reviews