Book Image

Learning Neo4j 3.x - Second Edition

By : Jerome Baton
Book Image

Learning Neo4j 3.x - Second Edition

By: Jerome Baton

Overview of this book

Neo4j is a graph database that allows traversing huge amounts of data with ease. This book aims at quickly getting you started with the popular graph database Neo4j. Starting with a brief introduction to graph theory, this book will show you the advantages of using graph databases along with data modeling techniques for graph databases. You'll gain practical hands-on experience with commonly used and lesser known features for updating graph store with Neo4j's Cypher query language. Furthermore, you'll also learn to create awesome procedures using APOC and extend Neo4j's functionality, enabling integration, algorithmic analysis, and other advanced spatial operation capabilities on data. Through the course of the book you will come across implementation examples on the latest updates in Neo4j, such as in-graph indexes, scaling, performance improvements, visualization, data refactoring techniques, security enhancements, and much more. By the end of the book, you'll have gained the skills to design and implement modern spatial applications, from graphing data to unraveling business capabilities with the help of real-world use cases.
Table of Contents (24 chapters)
Title Page
Credits
About the Authors
Acknowledgement
About the Reviewers
www.PacktPub.com
Customer Feedback
Preface

Specific query examples for recommendations


In this example dataset, we will explore a couple of interesting queries that would allow us--with the information that is available to us--to construct interesting recommendations for our hypothetical users. We will do so along different axes:

  • Product purchases
  • Brand loyalty
  • Social and/or family ties

Let's start with the first and work our way through.

Recommendations based on product purchases

Let's build this thing from the ground up. The first query that we want to write is based on past purchasing behavior. We would like to find people that already share a couple of products that they have purchased in the past, but that also explicitly do not share a number of other products. In our data model, this Cypher query would go something as follows:

match (p1:Person)-[:BOUGHT]->(prod1:Product)<-[:BOUGHT]-(p2:Person)-[:BOUGHT]->(prod2:Product) 
where not(p1-[:BOUGHT]->prod2) 
return p1.name as FirstPerson, p2.name as SecondPerson, prod1.name...