Set a specific seed value in gds.node2vec

[cookie]

Hello, I've tried to run gds.node2vec.write in my graph but when I recreate the graph (after restarting the database), the result changes..
I saw the configuration of the algorithm but nothing different appears. Then, in the parameters i saw the Seedvalue parameter that isn't reffered in configuration. Is there a way to set seedvalue in a specific number? I tried the traditional way Seedvalue:'15' but nothing changed.

github.com/aditya-grover/node2vec

node2vec is not deterministic, i.e. multiple runs will lead to different embeddings

opened 09:00PM - 26 Sep 19 UTC

antonkratz

node2vec is not deterministic, i.e. multiple runs will lead to different embeddi…ngs. I am working with to very similar, but not identical graphs. If I compare their embeddings, it is not clear which changes are caused by the graphs being different, or simply by having done two different runs of embeddings. Can this be somehow adressed? Would setting the random seed to a fixed value address this? If yes, _can_ the random seed be set to a fixed value?

[tfontanella011]

Hi @cookie,
According to node2vec documentation, you can provide a Map configuration and set the randomSeed as a parameter.

Neo4j Graph Database Platform

Node2Vec - Neo4j Graph Data Science

This section describes the Node2Vec node embedding algorithm in the Neo4j Graph Data Science library.

Hope it helps

[cookie]

Hello @tfontanella011 and thank you for your answer. If I provide it, nothing changes... the same seed in two runs leads to two different results.