recommendations

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:name: recommendations :long-name: Recommendations :description: Generate personalized real-time recommendations using a dataset of movie reviews :icon: documentation/img/icon-movie.svg :tags: example-data,dataset,movie-data,recommendations,cypher,algorithms :author: William Lyon, updated for GDS 2 by Clair Sullivan :demodb: true :data: false :use-load-script: false :use-dump-file: data/recommendations-40.dump :zip-file: false :use-plugin: false :target-db-version: 4.0 :bloom-perspective: bloom/recommendations.bloom-perspective :guide: documentation/recommendations.neo4j-browser-guide :rendered-guide: https://guides.neo4j.com/sandbox/{name}/index.html :model: documentation/img/model.png :example: documentation/img/example.png :nodes: 28863 :relationships: 166261

:todo: false image::{icon}[width=100]

== {long-name} Graph Example

Description: {description}

ifeval::[{todo} != false] To Do: {todo} endif::[]

Nodes {nodes} Relationships {relationships}

.Model image::{model}[]

.Example image::{example}[width=600]

.Example Query: [source,cypher,role=query-example,param-name=movie,param-value="Crimson Tide",result-column=recommendation,expected-result="Phantom of the Opera, The"]

MATCH (m:Movie {title:$movie})<-[:RATED]-(u:User)-[:RATED]->(rec:Movie) RETURN distinct rec.title AS recommendation LIMIT 20

=== Setup

This is for Neo4j version: {target-db-version}

ifeval::[{use-plugin} != false] Required plugins: {use-plugin} endif::[]

ifeval::[{demodb} != false] The database is also available on https://demo.neo4jlabs.com:7473

Username "{name}", password: "{name}", database: "{name}" endif::[]

Rendered guide available via: :play {rendered-guide}

Unrendered guide: link:{guide}[]

Load graph data via the following:

ifeval::[{data} != false] ==== Data files: {data}

Import flat files (csv, json, etc) using Cypher's https://neo4j.com/docs/cypher-manual/current/clauses/load-csv/[LOAD CSV], https://neo4j.com/labs/apoc/[APOC library], or https://neo4j.com/developer/data-import/[other methods]. endif::[]

ifeval::[{use-dump-file} != false] ==== Dump file: {use-dump-file}

• Drop the file into the Files section of a project in Neo4j Desktop. Then choose the option to Create new DBMS from dump option from the file options.

• Use the neo4j-admin tool to load data from the command line with the command below.

[source,shell,subs=attributes]

bin/neo4j-admin load --from {use-dump-file} [--database "database"]

• Upload the dump file to Neo4j Aura via https://console.neo4j.io/#import-instructions

Note: recommendations-embeddings-50.dump was dumped from Neo4j 5.18.

endif::[]

ifeval::[{use-load-script} != false] ==== Data load script: {use-load-script}

[source,shell,subs=attributes]

bin/cypher-shell -u neo4j -p "password" -f {use-load-script} [-d "database"]

Or import in Neo4j Browser by dragging or pasting the content of {use-load-script}. endif::[]

ifeval::[{zip-file} != false] ==== Zip file

Download the zip file link:{repo}/raw/master/{name}.zip[{name}.zip] and add it as "project from file" to https://neo4j.com/developer/neo4j-desktop[Neo4j Desktop^]. endif::[]

=== Code Examples

• link:code/javascript/example.js[JavaScript]
• link:code/java/Example.java[Java]
• link:code/csharp/Example.cs[C#]
• link:code/python/example.py[Python]
• link:code/go/example.go[Go]

=== GraphQL API

See link:graphql[/graphql directory] for Node.js GraphQL API server example using link:https://www.npmjs.com/package/@neo4j/graphql[@neo4j/graphql]

=== Feedback

Feel free to submit issues or pull requests for improvement on this repository.