GraphSAGE for heterogenous graph

Neo4j Graph Platform Graph Algorithms/Graph Data Science
1

Hi everyone.

I have tried to use node embeddings as suggested but i wonder is it possible to do node embeddings with this much of different node labels and relationships?

graph4users
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I tried to use GraphSAGE but I kept getting error, which is

image
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Is this because I did not specify defaultValue: 0 when I created my graph? This is how I created my graph.

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Hope I can get answer to is it plausible to use GraphSAGE for this.

2

It looks like you aren't including any node properties when creating your graph. I would reference this code sample from this example from the docs.

CALL gds.graph.create(
  'persons_with_instruments',
  {
    Person: {
      label: 'Person',
      properties: ['age', 'heightAndWeight']
    },
    Instrument: {
      label: 'Instrument',
      properties: ['cost']
    }
  }, {
    KNOWS: {
      type: 'KNOWS',
      orientation: 'UNDIRECTED'
    },
    LIKES: {
      type: 'LIKES',
      orientation: 'UNDIRECTED'
    }
})

CALL gds.beta.graphSage.train(
  'persons_with_instruments',
  {
    modelName: 'multiLabelModel',
    featureProperties: ['age', 'heightAndWeight', 'cost'],
    projectedFeatureDimension: 4
  }
)
3

Hi Sean,

Thanks for replying.

I have tried created a different graph based on the reference you shared:
image

But it still gives the same error.
Failed to invoke procedure gds.beta.graphSage.train: Caused by: java.lang.IllegalArgumentException: The feature properties ['JobVector'] are not present for all requested labels. Requested labels: ['Course', 'Field', 'Jobads', 'Jobbg', 'Joblevel', 'Qual', 'Skill', 'University', 'User']. Properties available on all requested labels:

Thank you for your help!

4

Well here it looks like your JobVector property is a property of the WORK_AS relationship, not a node. In which case, the featureProperties parameter won't see it as it refers to node properties. I think you want the relationshipWeightProperty parameter in this case. Although I'm not sure if it is required to exist on all relationships.

5

Hi Sean,

I changed it to relationshipWeightProperty parameter and i think that's correct too. But still, it is showing the same error. I guess it is required to exist on all relationships.

Thank you though for your help!

6

Hey @nuraishahzaidi01,
as Sean already mentioned, the featureProperties only look for node properties in the projected graph.

Is your JobVector a node or a relationship property?
Important to note is, that currently GDS does not support array properties on relationships.
Supported relationship properties are doubles and integers (see https://neo4j.com/docs/graph-data-science/current/graph-create/#relationship-projection-syntax).

7

Hi @florentin_dorre,

My JobVector is a relationship property.
Ahh I see, I'm sorry I think I missed out on that one. Thank you for your clarification, I will have to try to find some other ways to include the array in the graph then.

Thanks again!

8

Glad I could help.
We can also try to make the documentation clearer. Do you have a suggestion at which place you would have expected to read the limitation?

9

Hi @florentin_dorre,

Very sorry for the late reply, I have been moved to another project and had to stop doing this one. But on your question, I think in the documentation if it's possible to have " GDS does not support array properties on relationships" as a ! caution or something along the lines would be great. If this can be included in the 2.5. Relationship properties.

Because I got confused with the properties type (in 1.2 Relationship Projection as shown in the photo). I thought the type for properties meant for properties on the relationships.

image
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That was my mistake.

Thank you again. Looking forward to use Neo4j in the future :)

1 Like