User Profile
摘要
Chapter 2 introduced one of the core basic modules of the recommender system-content understanding. This chapter will explore how to build user profiles and understand another main participator in the recommender system—the users. In this era where data analysis and intelligent recommendations are ubiquitous, user profiles have been widely used in various industries. For example, if we actively search for a certain product, we will find recommendations or pushes related to this product everywhere on information platforms. For example, if we just got a new car, we will soon receive various related peripheral information such as car insurance and car decorations. All of this involves the user profile to be introduced in this chapter.