Read yelp2018 dataset done! u_num: 31668, i_num: 38048
Load a pre-trained model
 UL AUC before unlearning: 0.5051
ACC AUC before unlearning: 0.8838
NDCG@20 before unlearning: 0.0277
Start phantom user assignment k-means!
Finish phantom user assignment k-means!
[RECUL] START TRAINING. CURRENT TIME: 0.01min.
[RECUL] PREPROCESS FINISHED. CURRENT TIME: 0.03min.
[RecUL] Epoch [1/2000], Loss: 3.5700, UL AUC: 0.8348, ACC AUC: 0.7957, ACC NDCG@20: 0.0277, Current time: 0.12min
[RecUL] Epoch [2/2000], Loss: 3.2829, UL AUC: 0.8342, ACC AUC: 0.8062, ACC NDCG@20: 0.0278, Current time: 0.21min
[RecUL] Epoch [3/2000], Loss: 3.2508, UL AUC: 0.8176, ACC AUC: 0.8048, ACC NDCG@20: 0.0278, Current time: 0.29min
[RecUL] Epoch [4/2000], Loss: 3.2255, UL AUC: 0.8209, ACC AUC: 0.7854, ACC NDCG@20: 0.0278, Current time: 0.38min
[RecUL] Epoch [5/2000], Loss: 3.2174, UL AUC: 0.7984, ACC AUC: 0.8025, ACC NDCG@20: 0.0276, Current time: 0.46min
[RecUL] Epoch [6/2000], Loss: 3.1820, UL AUC: 0.8198, ACC AUC: 0.7872, ACC NDCG@20: 0.0275, Current time: 0.54min
[RecUL] Epoch [7/2000], Loss: 3.1776, UL AUC: 0.8037, ACC AUC: 0.7925, ACC NDCG@20: 0.0275, Current time: 0.62min
[RecUL] Epoch [8/2000], Loss: 3.1694, UL AUC: 0.7839, ACC AUC: 0.7937, ACC NDCG@20: 0.0275, Current time: 0.70min
[RecUL] Epoch [9/2000], Loss: 3.1476, UL AUC: 0.8004, ACC AUC: 0.7848, ACC NDCG@20: 0.0275, Current time: 0.78min
[RecUL] Epoch [10/2000], Loss: 3.1499, UL AUC: 0.7833, ACC AUC: 0.7940, ACC NDCG@20: 0.0275, Current time: 0.86min
[RecUL] Epoch [11/2000], Loss: 3.1378, UL AUC: 0.7824, ACC AUC: 0.7937, ACC NDCG@20: 0.0275, Current time: 0.94min
Best UL AUC: 0.8348, Best epoch: 0, total time: 1.02min
[RECUL] TRAINING FINISHED. TOTAL TIME: 1.03min.
Precision@20: 0.0162; Recall@20: 0.0357;  NDCG@20: 0.0277;  
Precision@50: 0.0144; Recall@50: 0.0786;  NDCG@50: 0.0439;  
Precision@100: 0.0126; Recall@100: 0.1363;  NDCG@100: 0.0627;  
Before unlearning: ACC AUC: 0.8838, UL AUC: 0.5051, ACC NDCG@20: 0.0277
After unlearning: ACC AUC: 0.7957, UL AUC: 0.8348, ACC NDCG@20: 0.0277
