Measure Degree Centrality

Neo4j Graph Platform
1

Hello everybody,

I am fairly new to neo4j and created a first dataset with two types of nodes and various edges. Now I am trying to measure the degree centrality but I am not able to run the query from the guide. I am using version 4.4.5 and have these plugins isntalled and activated: APOC 4.4.0.6; Graph Data Science Library 2.0.3; Neo4jStreams 4.1.2, and Neosemantics (n10) 4.4.01.

I tried to run the follwoing query:

CALL gds.degree.stream(
graphName: String,
configuration: Map
) YIELD
nodeId: Integer,
score: Float

and I got the following error:

Neo.ClientError.Statement.SyntaxError

Invalid input ':': expected
","
"AS"
"CALL"
"CREATE"
"DELETE"
"DETACH"
"FOREACH"
"LOAD"
"MATCH"
"MERGE"
"OPTIONAL"
"REMOVE"
"RETURN"
"SET"
"UNION"
"UNWIND"
"USE"
"WHERE"
"WITH"
(line 5, column 9 (offset: 82))
" nodeId: Integer,"
^

I would by grateful for any help or link to a step-by-step tutorial. I only found some tutorials for other algorythms (algo), which are not supported by my version.

Thanks in advance for any help.

2

The code you executed is not valid cypher. It is defining the syntax of the command. ‘GraphName:String’ is stating the first parameter is named ‘grapgString’ and its type is a string. The second parameter is defined as a map. The values following ‘yield’ are defying the outputs of the procedure.

it looks like that example is showing the syntax. I guess the intent is for you to be able to copy and paste it as your staring point.

CA1162D7-7771-4263-A765-34560B078543.jpeg

Look further down the page for a concrete example.

4DC29794-0DE9-48D1-8027-134EC1417F3C.jpeg

https://neo4j.com/docs/graph-data-science/current/algorithms/degree-centrality/#algorithms-degree-centrality-examples-stream

3

Thank you! I have looked it up and now it is working.

The problem was the wrong command as you pointed out and that I did not creat e a graph.project before using the command.