Movie/Show Recommendation System

Use the questions below to review the whole recommendation pipeline. In the first answer, show how candidates from different sources reach a common ranker and then a final list. In the second, remove the viewing history or the item’s interaction history and explain what evidence remains. In the third, test whether your proposed objective can reward a result that the viewer would consider poor.

Before reading each reference answer, write one concrete example that could expose a weakness in your design. A popular but irrelevant title, a new movie with no watches, or a long session with low satisfaction should lead you to different changes.