LI Gai, CHEN Qiang, LI Lei. Collaborative Filtering Recommendation Algorithm Based on Rating Prediction and Ranking Prediction[J]. Acta Electronica Sinica, 2017, 45(12): 3070-3075.
DOI:
LI Gai, CHEN Qiang, LI Lei. Collaborative Filtering Recommendation Algorithm Based on Rating Prediction and Ranking Prediction[J]. Acta Electronica Sinica, 2017, 45(12): 3070-3075. DOI: 10.3969/j.issn.0372-2112.2017.12.033.
Collaborative Filtering Recommendation Algorithm Based on Rating Prediction and Ranking Prediction
Collaborative filtering (CF) recommendation algorithm is widely used in the field of e-commerce.The previous researches on CF focused on either rating prediction or ranking prediction.In order to take into account these two aspects
a collaborative filtering recommendation algorithm based on rating prediction and ranking prediction (Unified Recommendation Algorithm
URA) is proposed.URA shares common latent features of users and items in PMF (Probabilistic Matrix Factorization
rating-oriented) and xCLiMF (Extended Collaborative Less-is-More Filtering
ranking-oriented) algorithms
and PMF learns improved latent features of users and items in URA
so that URA improves the performance of ranking recommendation.Experimental results showed that our proposed URA Algorithm outperformed PMF and xCLiMF algorithms over evaluation metrics NDCG and ERR
and that the complexity of URA is shown to be linear with the number of observed ratings.URA is suitable for big data processing in the field of internet information recommendation.