What is the plot meaning in compare_models for recommender package

User 1196 | 1/13/2015, 6:57:24 PM

Hi, I am trying to experiment with recommender module.. So I have to recommenders model, r1 and r2 And then when I compare them I see a precision recall plot.. Question I have is why is there a curve.,. What is that curve and how is it calculated. I thought for each model, you will get a single precision metric (average over users) and single recall metric (average over users).. So, there should be a point? Can someone explain this to me. Thanks


User 1189 | 1/13/2015, 11:21:32 PM

It is precision and recall as I vary the number of items being queried.