| | Notations | Descriptions |
| | , | Set of users in home city and current city | | , | Set of POIs in home city and current city | | , | Target tourist user from home city and local user in current city | | , | POI in home city and current city | | , , | Check-in sequence of target tourist in their home city, target tourist in current city and local in current city | | , , , | Embedding vector of POI in home city and current city | | , , | Embedding vector of target tourist in their home city, target tourist in current city and local in current city | | , | Embedding vector of check-in POI at timestamp in home city and current city | | , , , | Output hidden state of home city branch, transfer branch, drift branch for home city set and current city set | | , | Probability of next POI in home city and current city | | Probability distributions over user roles | | , | Check-in frequency vector of user and | | , | Cosine similarity of embedding vectors and check-in frequency vectors for user and | | , , , , , | Trainable parameters in model |
|
|
