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Journal of ZheJiang University (Engineering Science)  2023, Vol. 57 Issue (8): 1527-1540    DOI: 10.3785/j.issn.1008-973X.2023.08.006
    
Research progress of recommendation system based on knowledge graph
Hui-xin WANG(),Xiang-rong TONG*()
School of Computer and Control Engineering, Yantai University, Yantai 264005, China
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Abstract  

Aiming at the problems of data sparsity, cold start, low interpretability of recommendation, and insufficient personalization in recommender system, the integration of knowledge graph into recommender system was analyzed. From the demand of recommender system, the concept of knowledge graph, and the integration approach of recommender system and knowledge graph, the problems of current recommender system and the solutions of recommender system after integrating knowledge graph were summarized. It was reviewed that, in recent years, the attention mechanism, neural network and reinforcement learning methods were combined, by which the principles of node trade-off, node integration, and paths exploring were used to make full use of the complex structural information in knowledge graph, so as to improve the satisfaction degree with the recommender system. The challenges and possible future development direction of the recommender system integrating the knowledge graph were put forward in terms of knowledge graph completeness, dynamics, availability of higher-order relationships, and the performance of the recommendation.



Key wordsknowledge graph      recommendation system      collaborative filtering      attention mechanism      graph embedding     
Received: 29 July 2022      Published: 31 August 2023
CLC:  TP 391  
Fund:  国家自然科学基金资助项目(62072392, 61972360);山东省重大科技创新工程资助项目(2019522Y020131);烟台市重点实验室资助项目
Corresponding Authors: Xiang-rong TONG     E-mail: huixin_king@163.com;xr_tong@163.com
Cite this article:

Hui-xin WANG,Xiang-rong TONG. Research progress of recommendation system based on knowledge graph. Journal of ZheJiang University (Engineering Science), 2023, 57(8): 1527-1540.

URL:

https://www.zjujournals.com/eng/10.3785/j.issn.1008-973X.2023.08.006     OR     https://www.zjujournals.com/eng/Y2023/V57/I8/1527


融合知识图谱的推荐系统研究进展

针对推荐系统存在的数据稀疏、冷启动、推荐可解释性低、个性化不足等问题,分析知识图谱在推荐系统中的融入情况.从推荐系统的需求、知识图谱的相关概念、推荐系统与知识图谱的融合方式3个方面,对当前推荐系统存在的问题及推荐系统融合知识图谱后的解决方案进行概括. 总结近年来通过结合注意力机制、神经网络、强化学习方法,采用取舍节点、整合节点、探索路径等原理充分利用知识图谱中复杂结构信息,从而提升推荐系统满意度. 提出融合知识图谱的推荐系统所面临的知识图谱完备性、动态性、高阶关系可利用度以及推荐性能方面的挑战及未来可能的发展方向.


关键词: 知识图谱,  推荐系统,  协同过滤,  注意力机制,  图嵌入 
Fig.1 Content based recommendation algorithm
Fig.2 CF recommendation chart based on user and item
Fig.3 Common side information of recommendation system
Fig.4 Diagram of knowledge graph
Fig.5 Schematic diagram of knowledge graph based recommendation system
方法 年份 KG使用方式 融入算法模型
特征 路径 混合 CNN GNN GCN Att RL RNN MF
CKE[61] 2016
KTUP[11] 2019
DER[62] 2019
MKR[43] 2019
KV-MN[63] 2018
PGPR[52] 2019
KPRN[64] 2019
TMER[65] 2021
FMG[66] 2017
Ekar[67] 2019
ERKM[13] 2021
ReMR[68] 2022
RippleNet[69] 2018
KGCN[70] 2019
KGAT[71] 2019
KGNN-LS[72] 2019
KERL[73] 2020
KGIN[74] 2021
Mvin[75] 2020
CKAN[76] 2020
KRED[77] 2020
McHa[78] 2022
PeRN[79] 2021
KR-GCN[80] 2022
Tab.1 Comparison list of recommendation algorithms using different KG methods
Fig.6 Trans series translation model
Fig.7 Collaborative knowledge graph
Fig.8 Schematic diagram of attention network
Fig.9 Two-level perceptual domain of target user entity nodes in knowledge graph
Fig.10 Interaction between Agent and environment in reinforcement learning
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