Hi, I'm working on a project that began on an older version of Neo4j (3.5) and has slightly different syntax, particularly regarding algorithms. I'm trying to 'update' the following query to work with GDS:
CALL algo.labelPropagation.stream(
'MATCH (p:Publication) RETURN id(p) as id',
'MATCH (p1:Publication)-[r1:HAS_WORD]->(w)<-[r2:HAS_WORD]-(p2:Publication)
WHERE r1.occurrence > 5 AND r2.occurrence > 5
RETURN id(p1) as source, id(p2) as target, count(w) as weight',
{graph:'cypher',write:false, weightProperty : "weight"}) yield nodeId, label
with label, collect(algo.asNode(nodeId)) as nodes where size(nodes) > 2
MERGE (c:PublicationLPACommunity {id : label})
FOREACH (n in nodes |
MERGE (n)-[:IN_LPA_COMMUNITY]->(c)
)
return label, nodes
The main issues are likely the first part (algo.labelPropagation) and (algo.asNode) since these have changed in GDS. Here is the error that is returned:
Procedure call provides too many arguments: got 3 expected no more than 2.
Procedure gds.labelPropagation.stream has signature: gds.labelPropagation.stream(graphName :: STRING?, configuration = Map{} :: MAP?) :: nodeId :: INTEGER?, communityId :: INTEGER?
meaning that it expects at least 1 argument of type STRING?
Description: The Label Propagation algorithm is a fast algorithm for finding communities in a graph. (line 1, column 1 (offset: 0))
"CALL gds.labelPropagation.stream("
^
Any help much appreciated!
