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- W4386124420 abstract "Due to the availability of massive numbers of items for any product on the Web, the burden of selecting an item is borne by the user. A Recommender System (RS) is a useful tool that has been employed to save the user’s time by recommending preferred items for him/her efficiently. Collaborative-based RS’s use the latent factor or/and the neighbourhood techniques including matrix factorization (MF), which is an efficient approach utilizing latent factors. The idea of the approach is based on calculating similarities through between users and items simultaneously, to predict appropriate recommendations. MF can be seen as mathematical model capable to split an entity into multiple smaller entries through an ordered rectangular array of functions, to discover the features or information underlying the interactions between users and items. The technique factorizes the user-item rating matrix (R) (first level factorization) into users (P) and items (Q) matrices. A recent RS system, named NLM, combines the neighbourhood and the latent factor techniques to produce attractive results. This paper proposes to improve the NLM method by proposing a more effective technique, named NLM+, by further factorizing P and Q using MF using a second level factorization. To the best of our knowledge, current studies in this field have not considered the use of the aforementioned two levels of factorizing. To validate our method, CiaoDVD, MovieLens, and FilmTrust datasets have been used and incorporated to demonstarte that NLM+ improves NLM by 48% and 42% in the recall and the precision values, respectively." @default.
- W4386124420 created "2023-08-25" @default.
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- W4386124420 date "2023-01-01" @default.
- W4386124420 modified "2023-10-12" @default.
- W4386124420 title "Improving Recommender Systems by a Further Factorization of the Factor Matrices" @default.
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- W4386124420 doi "https://doi.org/10.1109/access.2023.3308489" @default.
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