Unable to use neo4j-algo

[mading0817]

Hi,

I upgraded my desktop from 1.2.1 to 1.2.4 today. In 1.2.1, my neo4j version was 3.5.2 and now I am unable to create a database with version 3.5.2.

Why and how do I create a 3.5.2 database in 1.2.4 desktop?

I have to create a 3.5.16 database which close to 3.5.2 and I am unable to install GRAPH ALGORITHMS plugin with desktop 1.2.4.

Why and how do I install GRAPH ALGORITHMS plugin?

In neo4j 3.5.2, I installed GRAPH ALGORITHMS with version 3.5.2.0.

I was going to test The Louvain algorithm according to [documentation].(https://neo4j.com/docs/graph-algorithms/current/algorithms/louvain/) So I have created the example graph.

But I got an error as followed when I ran the algorithm.

Why and how do I run The Louvain algorithm based in this example?

Neo4j 4.x does not support GRAPH ALGORITHMS for now. When it will be supported?

Thanks

[alicia_frame]

I think this is a bug in desktop that it doesn't show up for 3.5.16 -- I've reached out to the team to check what's happened here.

In the interim, you can download the jar from our download center: https://neo4j.com/download-center/ You'll need Neo4j 3.5.8+ in order to install and run the jar.

To install, place it in the plugins folder for your database:

And under settings, set dbms.security.procedures.unrestricted=algo.*, then restart your database.

Look for support for 4.0 in late April.

[mading0817]

Hi Alicia,

Thanks for replying me.
The urgent problem I need to solve right now is to use "The Louvain algorithm" in 3.5.2.
Could you help me with that?

Thanks!

[mading0817]

Algorithm 3.5.2.0 should check neo4j 3.4 version.

[alicia_frame · Accepted solution]

It sounds like your blocker is getting Neo4j 3.5.2 installed in desktop -- probably better to post that question on the general forum.

The older releases of graph algos are available here: https://github.com/neo4j-contrib/neo4j-graph-algorithms/releases - you can download and install that jar manually as described. However, that version is not optimized and may have bugs.

I would recommend upgrading your database to 3.5.16 (or creating a new one) and installing the graph data science library (available at https://neo4j.com/download-center/) for best performance.