Feature-Extraction-Based Image Scoring

Methods, apparatuses and systems directed to calculating a probability that a user or set of users will engage with a multimedia object for customizing content in a social networking system. In one embodiment, a generative model representing all users is utilized to calculate the probability that all users will interact with a given multimedia object. In another embodiment, the same generative model is utilized to calculate a user-specific engagement probability for a given multimedia object. In particular embodiments, the generative model uses Bayesian probability. In particular embodiments, one or more policies are applied to the photos to customize the browsing experience for users.