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More and more people become conscious of the recommendation system to make good use of the data through their inherent advantages faced with the large amount of data on the Internet. The collaborative filtering recommendation algorithm cannot avoid the bottleneck of computing performance problems in the recommendation process. In this paper, we propose a parallel collaborative filtering recommendation algorithm RLPSO-KM-CF which is implemented based on Spark. Firstly, the RLPSO (reverse-learning and local-learning PSO) algorithm is used to find the optimal solution of particle swarm and output the optimised clustering centre. Then, the RLPSO-KM algorithm is used to cluster the user information. Finally, make effective recommendations to the target user by combining the traditional user-based collaborative filtering algorithm with the RLPSO-KM clustering algorithm. The experimental results show that the RLPSO-KM-CF algorithm has a significant improvement in the recommendation accuracy and has a higher speed-up and stability. Copyright © 2018 Inderscience Enterprises Ltd.
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