Cypher Collaborative Filtering extention

[c-fly]

I am trying to extent a simple collaborative filtering process to include returning only recommendations of items that contain a given set of category tags.

i.e. find me all films that are tagged with both comedy and horror.

Is this type of graph traversal possible becasue it would require a split in the path?

Could I user the All function to find the set of category tags and find if each one is connected to the item?

[andres.taylor]

Hi there,

Yes, that's very possible. If you're tags are nodes (they probably should), it could look like this:

START comedyTag=node(...), horrorTag=node(...)
MATCH comedyTag<--movie-->horrorTag
RETURN movie

Does that answer your question?

Andrés

[c-fly]

I am thinking more along the lines of something of a more general case, a bit like:

START tags=node(y1,y2,y3)
MATCH ALL(tags <-- movie )
RETURN movie

So rather then explicitly define a set of relations for each category tag, and therefore have to rebuild the query for each tag set, provide a general case similar to the java collections containsAll(..) method.

Thanks,
C.

[andres.taylor]

I am thinking more along the lines of something of a more general case, a bit like:

START tags=node(y1,y2,y3)
MATCH ALL(tags <-- movie )
RETURN movie

So rather then explicitly define a set of relations for each category tag, and therefore have to rebuild the query for each tag set, provide a general case similar to the java collections containsAll(..) method.

Thanks,
C.

That's a terrific idea. I can definitely see it's use.

Unfortunately, Cypher doesn't support this today. I think this feature is interesting enough that we'll discuss it for inclusion in future versions.

Thanks so much for your feedback,

Andrés