How must a new user signing up for a recipe app immediately handle the limitation of Collaborative Filtering?
Answer
By immediately pivoting to content-based suggestions based on onboarding questions
The cold start problem severely impacts Collaborative Filtering (CF) when dealing with brand new users because CF depends entirely on existing interaction data (saves, ratings, cooks). Since a new user lacks this history, the system cannot effectively find similar users or items based on past behavior. To ensure immediate usability and personalization, the system must pivot to Content-Based Filtering (CBF). This is achieved by gathering explicit initial data through onboarding questions focused on attributes, such as preferred cuisines or stated allergies, allowing the system to recommend items based on inherent item characteristics immediately.

Related Questions
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