E-commerce Recommender System Using PCA and K-Means Clustering

E-commerce Recommender System Using PCA and K-Means Clustering

recommender system, collaborative filtering, principal component analysis, k-means, e-commerce

Recently, recommender system has an important role in e-commerce to market products for users. One of recommender system
approach that used in e-commerce is Collaborative Filtering. This system works by providing product recommendations based
on products liked by other users who have similar preferences. However, sparse conditions in user data will cause sparsity
problems, namely the system is difficult to provide recommendations because of the lack of important information needed.
Therefore, we propose an e-commerce product recommendation system based on Collaborative Filtering using Principal
Component Analysis (PCA) and K-Means Clustering. K-Means is used to overcome sparsity problems and to form user clusters
to reduce the amount of data that needs to be processed. While PCA is used to reduce data dimensions and improve clustering
performance of K-Means. The test results using the sports product dataset on the Olist e-commerce show that the proposed
system has a lower RMSE value compared to other methods. For the number of neighbors of 10, 20, 30, and 40, our system
obtains values of 0.771806, 0.75747, 0.75304, 0.75304, and 0.75270

Dendy Andra A.N1
, Z. K. A. Baizal2

Telkom University

Telkom University

Fajar bagus W

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Indonesia

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