Hi Laurent,
yes, you can store properties exactly like in Nodes for Relationships,
see http://api.neo4j.org/current/org/neo4j/api/core/Relationship.html
and its superclass,
http://api.neo4j.org/current/org/neo4j/api/core/PropertyContainer.html.

If you are using Ruby, you find the Ruby:fied way to set properties on
relationships in the Three-Minute-Tutorial at
http://github.com/andreasronge/neo4j

HTH

/peter neubauer

COO and Sales, Neo Technology

GTalk:      neubauer.peter
Skype       peter.neubauer
Phone       +46 704 106975
LinkedIn   http://www.linkedin.com/in/neubauer
Twitter      http://twitter.com/peterneubauer

http://www.neo4j.org                - Relationships count.
http://www.linkedprocess.org   - Distributed computing on LinkedData scale



On Sun, Nov 22, 2009 at 2:53 PM, Laurent Laborde <[email protected]> wrote:
> Hi !
>
> For a fun side-project i want to graph a markov chain (a Markov Text 
> Generator).
>
> 1 node = 1 word.
>
> When, while parsing a text, i find a word followed by another word i
> create a "node-word" if it doesn't exist, and create relationship.
> if the word already exist : i create an outgoing relationship between
> the 2 words.
> if the relationship already exist i just increment a counter (this
> word was followed by the next word one more time).
>
> Now i need to store the probability of a specific word being followed
> by another word.
> including a word looping to itself.
>
> If you're not familiar with markov chain, a simple picture should
> explain it : 
> http://www.leda-tutorial.org/en/unofficial/Pictures/MarkovChain.png
>
> Storing the probabilty of a link to be followed should be ideally
> stored in the relationship itself.
> (and the probability to loop to itself in the node itself).
>
> However... it seems (accoring to the relationship api) that i can't
> set a property for a link.
> Is that right ?
>
> Any idea about how to store a "relationship property".
> Perhaps an index of relationship with "key = relationshipID" and
> "value = propability to follow this link" ?
>
> thank you for your help.
>
> --
> Laurent "ker2x" Laborde
> Sysadmin & DBA at http://www.over-blog.com/
> _______________________________________________
> Neo mailing list
> [email protected]
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>
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