

浏览全部资源
扫码关注微信
1. 北京交通大学计算机与信息技术学院,北京 100044
2. 交通数据分析与挖掘北京市重点实验室,北京 100044
Online First:2022-09,
Published:15 September 2022
移动端阅览
Yuqi ZHANG, Xiaowen HUANG, Jitao SANG. Knowledge-enhanced policy-guided interactive reinforcement recommendation system[J]. Big data research, 2022, 8(5): 88-105.
Yuqi ZHANG, Xiaowen HUANG, Jitao SANG. Knowledge-enhanced policy-guided interactive reinforcement recommendation system[J]. Big data research, 2022, 8(5): 88-105. DOI: 10.11959/j.issn.2096-0271.2022033.
推荐系统是解决社会媒体信息过载问题的重要手段。为了解决传统推荐系统无法优化用户长期体验的问题,研究人员提出了交互式推荐系统,并尝试使用深度强化学习优化推荐策略。但是,强化推荐算法面临反馈稀疏、从零学习影响用户体验、物品空间大等问题。为了解决上述问题,提出一种改进的知识增强策略引导的交互式强化推荐模型KGP-DQN。该模型构建行为知识图谱表示模块,将用户历史行为和知识图谱结合,解决反馈稀疏问题;构建策略初始化模块,根据用户历史行为为强化推荐系统提供初始化策略,解决从零学习影响用户体验的问题;构建候选集筛选模块,根据行为知识图谱上的物品表示进行动态聚类,从而减少物品空间,解决动作空间大的问题。在3个真实数据集上进行了实验,实验结果表明,KGP-DQN可以快速有效地对强化推荐系统进行训练,其在3个数据集上的推荐准确率均超过80%。
The recommendation system is an important means to solve the problem of information overload in social media.To solve the problem that traditional recommendation systems cannot optimize the longterm user experience
researchers have proposed the interactive recommendation system and tried to use deep reinforcement learning to optimize the strategy of recommendation.However
the reinforcement recommendation algorithm faces problems such as sparse feedback
learning from zero which damages the user experience
and large item space.To solve the above problems
an improved interactive reinforcement recommendation model KGP-DQN was proposed.The model constructed a behavioral knowledge graph representation module
which combines user historical behavior and knowledge graph to solve the problem of sparse feedback.The model constructed a strategy initialization module to provide an initialization strategy for the reinforcement recommendation system based on user historical behaviors to solve the problem of learning from zero.The model constructed the candidate select module which creates candidates by dynamic clustering based on the item representation on the behavioral knowledge graph to solve the problem of large action space.The experiments were conducted on three real-world datasets.The experimental results show that the KGP-DQN method can quickly and effectively train the reinforcement recommendation system and its recommendation accuracy on three datasets is more than 80%.
WANG H Z , WU Q Y , WANG H N . Factorization bandits for interactive recommendation [C ] // Proceedings of the 31st AAAI Conference on Artificial Intelligence . Palo Alto:AAAI Press , 2017 : 2695 - 2702 .
MAHMOOD T , RICCI F . Learning and adaptivity in interactive recommender systems [C ] // Proceedings of the 9th International Conference on Electronic Commerce . New York:ACM Press , 2007 : 75 - 84 .
ZHAO X Y , ZHANG L , DING Z Y , et al . Recommendations with negative feedback via pairwise deep reinforcement learning [C ] // Proceedings of the 24th ACM SIGKDD International Conference on Knowledge Discovery & Data Mining . New York:ACM Press , 2018 : 1040 - 1048 .
ZHOU S J , DAI X Y , CHEN H K , et al . Interactive recommender system via knowledge graph-enhanced reinforcement learning [C ] // Proceedings of the 43rd International ACM SIGIR Conference on Research and Development in Information Retrieval . New York:ACM Press , 2020 : 179 - 188 .
WANG P F , FAN Y , XIA L , et al . KERL:a knowledge-guided reinforcement learning model for sequential recommendation [C ] // Proceedings of the 43rd International ACM SIGIR Conference on Research and Development in Information Retrieval . New York:ACM Press , 2020 : 209 - 218 .
GOLDBERG D , NICHOLS D , OKI B M , et al . Using collaborative filtering to weave an information tapestry [J ] . Communications of the ACM , 1992 , 35 ( 12 ): 61 - 70 .
RENDLE S , . Factorization machines [C ] // Proceedings of 2010 IEEE International Conference on Data Mining . Piscataway:IEEE Press , 2010 : 995 - 1000 .
HIDASI B , KARATZOGLOU A , BALTRUNAS L , et al . Session-based recommendations with recurrent neural networks [J ] . arXiv preprint,2015,arXiv:1511.06939 .
ZHOU G R , ZHU X Q , SONG C R , et al . Deep interest network for click-through rate prediction [C ] // Proceedings of the 24th ACM SIGKDD International Conference on Knowledge Discovery & Data Mining . New York:ACM Press , 2018 : 1059 - 1068 .
CHEN H K , DAI X Y , CAI H , et al . Large-scale interactive recommendation with tree-structured policy gradient [C ] // Proceedings of the 33rd AAAI Conference on Artificial Intelligence . Palo Alto:AAAI Press , 2019 : 3312 - 3320 .
ZHENG G J , ZHANG F Z , ZHENG Z H , et al . DRN:a deep reinforcement learning framework for news recommendation [C ] // Proceedings of the 2018 World Wide Web Conference .[S.l.:s.n. ] , 2018 : 167 - 176 .
ZOU L X , XIA L , DING Z Y , et al . Reinforcement learning to optimize longterm user engagement in recommender systems [C ] // Proceedings of the 25th ACM SIGKDD International Conference on Knowledge Discovery & Data Mining . New York:ACM Press , 2019 : 2810 - 2818 .
DULAC-ARNOLD G , EVANS R , SUNEHAG P , et al . Reinforcement learning in large discrete action spaces [J ] . arXiv preprint,2015,arXiv:1512.07679 .
XIAN Y K , FU Z H , MUTHUKRISHNAN S , et al . Reinforcement knowledge graph reasoning for explainable recommendation [C ] // Proceedings of the 42nd International ACM SIGIR Conference on Research and Development in Information Retrieval . New York:ACM Press , 2019 : 285 - 294 .
HASSELT H V , GUEZ A , SILVER D . Deep reinforcement learning with double Q-learning [C ] // Proceedings of the 30th AAAI Conference on Artificial Intelligence . Palo Alto:AAAI Press , 2016 .
KOREN Y , BELL R , VOLINSKY C . Matrix factorization techniques for recommender systems [J ] . Computer , 2009 , 42 ( 8 ): 30 - 37 .
DAVIES D L , BOULDIN D W . A cluster separation measure [J ] . IEEE Transactions on Pattern Analysis and Machine Intelligence , 1979 , PAMI-1 ( 2 ): 224 - 227 .
0
Views
571
下载量
0
CSCD
Publicity Resources
Related Articles
Related Author
Related Institution
京公网安备11010802024621