Blockchain-based recommender systems: Applications, challenges and future opportunities

【Author】 Himeur, Yassine; Sayed, Aya; Alsalemi, Abdullah; Bensaali, Faycal; Amira, Abbes; Varlamis, Iraklis; Eirinaki, Magdalini; Sardianos, Christos; Dimitrakopoulos, George

【Source】COMPUTER SCIENCE REVIEW

【影响因子】8.757

【Abstract】Recommender systems have been widely used in different application domains including energy preservation, e-commerce, healthcare, social media, etc. Such applications require the analysis and mining of massive amounts of various types of user data, including demographics, preferences, social interactions, etc. in order to develop accurate and precise recommender systems. Such datasets often include sensitive information, yet most recommender systems are focusing on the models' accuracy and ignore issues related to security and the users' privacy. Despite the efforts to overcome these problems using different risk reduction techniques, none of them has been completely successful in ensuring cryptographic security and protection of the users' private information. To bridge this gap, the blockchain technology is presented as a promising strategy to promote security and privacy preservation in recommender systems, not only because of its security and privacy salient features, but also due to its resilience, adaptability, fault tolerance and trust characteristics. This paper presents a holistic review of blockchain-based recommender systems covering challenges, open issues and solutions. Accordingly, a well-designed taxonomy is introduced to describe the security and privacy challenges, overview existing frameworks and discuss their applications and benefits when using blockchain before indicating opportunities for future research. (C)& nbsp;2021 The Authors. Published by Elsevier Inc.& nbsp;

【Keywords】Recommender systems; Blockchain; Security and privacy preservation; Decentralized and collaborative; recommender systems; Big data and machine learning; Scalability

【发表时间】2022 FEB

【收录时间】2022-04-25

【文献类型】综述

【主题类别】

区块链应用-其他-