RT Journal Article
T1 Deep variational models for collaborative filtering-based recommender systems
A1 Bobadilla, Jesús
A1 Ortega, Fernando
A1 Gutiérrez, Abraham
A1 González Prieto, José Ángel
AB Deep learning provides accurate collaborative filtering models to improve recommender system results. Deep matrix factorization and their related collaborative neural networks are the state of the art in the field; nevertheless, both models lack the necessary stochasticity to create the robust, continuous, and structured latent spaces that variational autoencoders exhibit. On the other hand, data augmentation through variational autoencoder does not provide accurate results in the collaborative filtering field due to the high sparsity of recommender systems. Our proposed models apply the variational concept to inject stochasticity in the latent space of the deep architecture, introducing the variational technique in the neural collaborative filtering field. This method does not depend on the particular model used to generate the latent representation. In this way, this approach can be applied as a plugin to any current and future specific models. The proposed models have been tested using four representative open datasets, three different quality measures, and state-of-the-art baselines. The results show the superiority of the proposed approach in scenarios where the variational enrichment exceeds the injected noise effect. Additionally, a framework is provided to enable the reproducibility of the conducted experiments.
PB Springer Nature
SN 0941-0643
YR 2022
FD 2022-12-09
LK https://hdl.handle.net/20.500.14352/72782
UL https://hdl.handle.net/20.500.14352/72782
LA eng
NO Bobadilla, J., Ortega, F., Gutiérrez, A. & González Prieto, J. Á. «Deep Variational Models for Collaborative Filtering-Based Recommender Systems». Neural Computing and Applications, vol. 35, n.o 10, abril de 2023, pp. 7817-31. DOI.org (Crossref), https://doi.org/10.1007/s00521-022-08088-2.
NO CRUE-CSIC (Acuerdos Transformativos 2022)
NO Ministerio de Ciencia, Innovación y Universidades (España)
NO Comunidad de Madrid
DS Docta Complutense
RD 4 abr 2025