To find people similar to me based on the taggings of their favorited items, one approach could be:
- Determine the tags associated with what I favorite.
- What else is tagged with those tags?
- Who favorites items tagged with the same tags?
- Sort the result by how many of the same things these people like.
Query.
MATCH (me)-[:favorite]->(myFavorites)-[:tagged]->(tag)<-[:tagged]-(theirFavorites)<-[:favorite]-(people) WHERE me.name = 'Joe' AND NOT me=people RETURN people.name AS name, count(*) AS similar_favs ORDER BY similar_favs DESC
The query returns the list of possible friends ranked by them liking similar stuff that are not yet friends.