ResearchBenchmarksRecommendation on Tmall-Buy (test)Follow3.85Recall@20LPSFed0.17881.13192.0853.0381Mar 20, 2026Evaluation ResultsMethodMethodLinksRecall@20NDCG@20LPSFedLoss=BCLoss=BC2026.033.852.18FedSSP2026.033.71.86FedHGNN2026.033.621.71LPSFed (BPR)Loss=BPRLoss=BPR2026.033.621.86FedPUB2026.033.331.8PFedRec2026.033.231.7FedAvg2026.033.171.64F2MF2026.032.071.32FedMF2026.031.220.63FedRAP2026.030.460.52FedPerGNN2026.030.320.19