A Diffusion model for POI recommendation

Understand

Next Point-of-Interest (POI) recommendation is a critical task in location-based services that aim to provide personalized suggestions for the user's next destination.

• Previous works on POI recommendation have laid focused on modeling the user's spatial preference.
• However, existing works that leverage spatial information are only based on the aggregation of users' previous visited positions, which discourages the model from recommending POIs in novel areas.
• This trait of position-based methods will harm the model's performance in many situations.