Hierarchical Contextual Embeddings for Context-Aware Recommendations (Extended Abstract)

Recommender systems (RSs) have become one of the major applications that aim to tailor items to the user's preferences. Traditional recommendation algorithms capture users' interests and their interactions with items without taking into account contextual information, such as time and location. However, user interests may change depending on the context [1] . In real-life applications, there is plenty of information regarding user's circumstances and surroundings (e.g., the activity of the user, time, location, weather, etc.). Such contextual information can be high-dimensional and is gathered from multiple sources, such as web pages, mobile devices, and more. RSs taking context information into account are called context-aware recommender systems (CARSs) [1] .