任旭滨LLMs Enhanced Rec.pdf

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1、Enhancing Recommender Systems with Large Language ModelsXubin RenThe University of Hong Kong2LLMs+Graph in Recommendation1 Li,Yuhan,et al.A survey of graph meets large language model:Progress and future directions.arXiv preprint推荐算法推荐算法LLM as EnhancerGNN-LLMAlignment强化强化推荐系统3LLMRec:Large Language Mo

2、dels with Graph Augmentation for Recommendation1 Wei,Wei,et al.LLMRec:Large Language Models with Graph Augmentation for Recommendation.WSDM 2024.4BackgroundBackground原始数据原始数据用户用户-商品交互图商品交互图图神经网络图神经网络Bayesian Personalized Ranking(BPR)从交互图中采样训练数据从交互图中采样训练数据（正负样本对）（正负样本对）1 Wang,Xiang,et al.Neural graph

3、 collaborative filtering.SIGIR.2019.5存在的问题存在的问题用户用户-商品交互图商品交互图节点特征节点特征缺乏交互边交互边存在False positive基于基于大模型大模型进行进行训练数据增广训练数据增广引入引入多模态特征多模态特征基于基于大模型大模型进行进行节点节点特征增强特征增强图数据图数据增强增强 Graph Augmentation 1 Wei,Wei,et al.LLMRec:Large Language Models with Graph Augmentation for Recommendation.WSDM 2024.6基于大模型的节点特征增

4、强基于大模型的节点特征增强对用户画像的对用户画像的AugmentationPromptsGenerate user profile based on the history of user,that each movie with title,year,genre.History:332 Heart and Souls(1993),Comedy|Fantasy 364 Men with Brooms(2002),Comedy|Drama|Romance Please output the following infomation of user,output format:age:,gende

5、r:,liked genre:,disliked genre:,liked directors:,country:,language:LLMs Outputage:50,gender:female,liked genre:Comedy|Fantasy,Comedy|Drama|Romance,disliked genre:Thriller,Horror,liked directors:Ron Underwood,country:Canada,United States,language:English对商品属性的对商品属性的AugmentationPromptsProvide the inqu

6、ired information of the given movie.332 Heart and Souls(1993),Comedy|Fantasy The inquired information is:director,country,language.And please output them in form of:director,country,languageLLMs OutputRon Underwood,USA,English1 Wei,Wei,et al.LLMRec:Large Language Models with Graph Augmentation for R