Already installed Graph Data Science Library on the platform, but didn't work

[jayxu688]

I want to use GDS on my graph, and I already installed the library.

The graph is like this.

MATCH (a:Artifact{gav:'org.slf4j:slf4j-api:1.6.1'})
WITH id(a) AS startNode
CALL gds.alpha.dfs.stream('myGraph', {startNode: startNode})
YIELD path
UNWIND [ n in nodes(path) | n.gav ] AS tags
RETURN tags
ORDER BY tags

CALL gds.graph.create('myGraph', 'Artifact', 'DEPEND_ON', { relationshipProperties: 'scope' })

[Joel]

Could you try both of these commands and let us know what you see?

----- Reference: https://neo4j.com/docs/graph-data-science/current/installation/

To verify your installation, the library version can be printed by entering into the browser in Neo4j Desktop and calling the gds.version() function:

RETURN gds.version()

To list all installed algorithms, run the gds.list() procedure:

CALL gds.list()

[jayxu688]

Joel:

To list all installed algorithms, run the gds.list() procedure:

Thanks for your reply. It worked.

A further question about this cypher:
Can I set the direction of the relationship in this cypher?
What I want to know is all the project depend on this particular artifact (e.g. Artifact{gav:'org.slf4j:slf4j-api:1.6.1'}) using DFS algorithm. After I got the result, I want to see the does the result include the released project belong to our company( for exmaple, project A, B are directly or indirectly depending on 'org.slf4j:slf4j-api:1.6.1', but project C doesn't ). Finding all the released projects (as parameters) depending on this artifact as the termination condition , return project A and B's GAV information.

MATCH (a:Artifact {gav:'org.slf4j:slf4j-api:1.6.1'})
WITH id(a) AS startNode
CALL gds.alpha.dfs.stream('myGraph', {endNode: startNode})
YIELD path
UNWIND [ n in nodes(path) | n.gav ] AS tags
RETURN tags
ORDER BY tags

I tried this cypher but the performance is too bad when the result subgraph is too big
match (sss) -[:DEPEND_ON]->(a:Artifact{gav:"org.slf4j:slf4j-api:1.6.1"}) where sss<>a return distinct sss

I also tried this cypher:
MATCH (a:Artifact{gav:'org.slf4j:slf4j-api:1.6.1'}), (d:Artifact{gav:'org.wso2.carbon.identity.framework:org.wso2.carbon.identity.core:5.12.150'}) WITH id(a) AS startNode, id(d) AS targetNode CALL gds.alpha.dfs.stream('myGraph', {startNode: startNode, targetNode: targetNode}) YIELD path UNWIND [ n in nodes(path)] AS tags RETURN tags ORDER BY tags
It only showed the node itself.

But in fact, this node does depend on it.

[Joel]

As for what gds.alpha.dfs.stream supports, the documentation is here

https://neo4j.com/docs/graph-data-science/current/algorithms/dfs/

I'd also mention that you are using an "Alpha" version, there might be bugs (e.g. one bug found earlier, Data science DFS returns nonsense)