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Hands-On Graph Analytics with Neo4j

Hands-On Graph Analytics with Neo4j

By : Scifo
4.6 (9)
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Hands-On Graph Analytics with Neo4j

Hands-On Graph Analytics with Neo4j

4.6 (9)
By: Scifo

Overview of this book

Neo4j is a graph database that includes plugins to run complex graph algorithms. The book starts with an introduction to the basics of graph analytics, the Cypher query language, and graph architecture components, and helps you to understand why enterprises have started to adopt graph analytics within their organizations. You’ll find out how to implement Neo4j algorithms and techniques and explore various graph analytics methods to reveal complex relationships in your data. You’ll be able to implement graph analytics catering to different domains such as fraud detection, graph-based search, recommendation systems, social networking, and data management. You’ll also learn how to store data in graph databases and extract valuable insights from it. As you become well-versed with the techniques, you’ll discover graph machine learning in order to address simple to complex challenges using Neo4j. You will also understand how to use graph data in a machine learning model in order to make predictions based on your data. Finally, you’ll get to grips with structuring a web application for production using Neo4j. By the end of this book, you’ll not only be able to harness the power of graphs to handle a broad range of problem areas, but you’ll also have learned how to use Neo4j efficiently to identify complex relationships in your data.
Table of Contents (18 chapters)
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1
Section 1: Graph Modeling with Neo4j
5
Section 2: Graph Algorithms
10
Section 3: Machine Learning on Graphs
14
Section 4: Neo4j for Production

Measuring performance and tuning your query for speed

In order to measure a Cypher query performance, we will have to look at the Cypher query planner, which details the operations performed under the hood. In this section, we introduce the notions to learn how to access the Cypher execution plan. We will also deal with some good practices to avoid the worst operations in terms of performance, before concluding with a well-known example.

Cypher query planner

As you would do with SQL, you can check the Cypher query planner to understand what happens under the hood and how to improve your query. Two options are possible:

  • EXPLAIN: If you do not want the query to be run, EXPLAIN won't make any changes to your graph.
  • PROFILE: This will actually run the query and alter your graph, together with measuring performance.

In the rest of this chapter, we will use a dataset released by Facebook in 2012 for a recruiting competition hosted by Kaggle. The dataset can be downloaded here: https...

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