Modeling Hypernode in Neo4j

[Alireza Rezaei Mahdiraji]

Hi All,
I was wondering what is the best way to model a hypernode graph inside Neo4j?
Also, is there any specific Cypher clauses which help query such graphs?
Best,
Alireza

[Michael Hunger]

Does this help you? http://docs.neo4j.org/chunked/stable/cypher-cookbook-hyperedges.html

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[Alireza Rezaei Mahdiraji]

Hi Michael,

The link shows how to model a hyperedge in Neo4j.
A hyperedge connects several nodes together, while in
a hypernode graph each node itself could be atomic node or a
graph (a nested graph model). Any idea how this could be implemented in
Neo4j or is there any graph database which support this?

Best,
Alireza

[Peter Neubauer]

Alireza,

there are a couple of projects that try to model Hypergraph, mostly academic. I know of http://www.hypergraphdb.org/index but it seems almost dormant ...

Cheers,

/peter neubauer

G:  neubauer.peter
S:  peter.neubauer
P:  +46 704 106975
L:   http://www.linkedin.com/in/neubauer
T:   @peterneubauer

The authoritative book on graph databases - http://graphdatabases.com
Neo4j questions? Please use SO - http://stackoverflow.com/search?q=neo4j

[Alireza Rezaei Mahdiraji]

Hi Peter,
Are you implying that this modeling is not possible in Neo4j (at least currently)?
Best,
Alireza

[Jim Webber]

Hi,

In the Neo4j 2.0 M01 preview I believe you can use labels to "tag" hypernodes. Then your Cypher queries or custom algorithms can be written to take into account those nodes that represent subgraphs.

Jim

[Peter Neubauer]

Alireza,

I am saying that Neo4js model right now is a property graph with labels to handle named subgraphs. So, you can do either the explicit modeling mentioned above, or use, as Jim mentions, the new labels to denote a number of nodes that share the same affinity, see e.g. the Crew label in http://console-test.neo4j.org/

And yes, Hyperedge as a ore concept with that name does not exist in the core database engine, but well the semantics.

/peter

Cheers,

/peter neubauer

G:  neubauer.peter
S:  peter.neubauer
P:  +46 704 106975
L:   http://www.linkedin.com/in/neubauer
T:   @peterneubauer

The authoritative book on graph databases - http://graphdatabases.com
Neo4j questions? Please use SO - http://stackoverflow.com/search?q=neo4j

[Alireza Rezaei Mahdiraji]

Yes, what Jim said works for modeling hypernode. For interested people I found this post very useful
it contains an example about how to use labels in NEo4j.

Thanks,
Alireza