A post-hoc rating compression plus a high-confidence negative-sample loss reduces overconfidence and slightly improves recommendation accuracy in GNN-based recommender systems.
Lightgcn: Simplifying and powering graph convolution network for recommendation,
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Conf-GNNRec: Quantifying and Calibrating the Prediction Confidence for GNN-based Recommendation Methods
A post-hoc rating compression plus a high-confidence negative-sample loss reduces overconfidence and slightly improves recommendation accuracy in GNN-based recommender systems.