CODEWITHSUNDEEP
hadoopmahout
Sheepy
Sheepy

Reputation: 676

Mahout "Inverse" Recommender

With Mahout recommender (with Hadoop map reduce), the typical question is "which movies this particular user may be interested in?". How do we reverse that question and instead ask for "which users may be interested in this particular movie"?

And eventually to take it one step further: "for this list of movies, which users are the most suitable candidates?"

In reality this is not about movies, but to build a recommendation to pick top candidates with resources/preferences that most suitably meet a particular set of requirements.

Any thoughts how to solve this with Mahout, in particular using hadoop map-reduce jobs?

Upvotes: 0

Views: 117

Answers (1)

Sean Owen
Sean Owen

Reputation: 66876

Just flip your data, so that users are items and vice versa. Then use it as before.

Upvotes: 1

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