Neo4j

and_manousakis · 12-09-2022

I would like a node to be unique based on two constraints: 1. A property set by me 2. The index as set by neo4j at the creation of the node This is what I've tried so far: CREATE CONSTRAINT transaction_constraint IF NOT EXISTS FOR (tx: Transaction) ...

and_manousakis · 02-11-2022

I'm working on a bitcoin graph where a part of a path is the following: (address)-[i:input]->(transaction) Most of the times there are thousands of input relationships between an address and a transaction. I'm trying to aggregate the relationships...

and_manousakis · 01-08-2022

I have installed neo4j in my personal laptop and the graph db I'm analyzing keeps growing. Is it possible to move the graph db to an external SSD, load it from there and keep adding more nodes and edges? Thanks! Andreas

and_manousakis · 12-22-2020

I have a set of nodes extracted from a network bitcoin transaction network using the following query: MATCH (root:Address {AddressID: $val})-[r*..k]->(target:Transaction) RETURN DISTINCT(target.Hash) AS Targets where k = 1, 3 and 5 (i.e. hops away f...

and_manousakis · 06-27-2020

Hi everyone! The problem: I get an errno 111: no connection between the python client and the activated neo4j graph db. Same situation with both py2neo and neo4j python driver The setup: WSL2 (build 4.19.121.1) with Ubuntu 18.04 LTS, on windows 10 Pr...

and_manousakis · 12-10-2022

@glilienfield Thank you for the answer! I was trying to find a way to distinguish coinbase transactions as they all have the same hash. Ultimately, block hash along with transaction hash were used as constraints.

and_manousakis · 09-25-2022

@glilienfield thanks for the answer!It was implemented as you advised with the array. The values of a single feature where collected from multiple edges and stored in an array. Then that array was stored in a new edge. 

and_manousakis · 01-09-2022

Hi @koji Thank you for the reply - It worked! 

and_manousakis · 01-09-2021

Hi @FrederickEngelhardt, thanks for the answer! I would try your suggestion if I hadn't switched to linux. In case I switch back to that setup I'll give it a try 

and_manousakis · 07-02-2020

I sent graphXR an email back then. Their reply was that they don't support neo4j db version 4.x.x yet. I guess they still don't support it. Working with versions 3.5.x was fine though.

Neo4j

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User Activity

Create constraint on a property set by me and the index set by neo4j.

How can I store the result of COLLECT(x) as a property in a relationship?

Is it possible to store a graph db in an external hard drive?

Extract specific subgraph and create appropriate .csv files to re-import it in a new db

Does neo4j work with WSL2?

Re: Create constraint on a property set by me and the index set by neo4j.

Re: How can I store the result of COLLECT(x) as a property in a relationship?

Re: Is it possible to store a graph db in an external hard drive?

Re: Does neo4j work with WSL2?

Re: GraphXR error: "The Neo4j DB is inactive."