From ID to LLM : Rethinking Representation Learning for Recommendation
Song-Li Wu · Zhaocheng Du · Weinan Gan · Jingyi Wang · Xianquan Wang
摘要
Recent studies indicate a fundamental incompatibility between ID representations and language model (LM) representations, as they capture behavioral and semantic spaces respectively. This mismatch leads LM representations to consistently underperform ID representations in recommendation tasks. In...