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- W2991357302 abstract "Latent factor (LF) models are greatly efficient in extracting valuable knowledge from High-Dimensional and Sparse (HiDS) matrices which are commonly seen in many industrial applications. Stochastic gradient descent (SGD) is an efficient scheme to build an LF model, yet its convergence rate depends vastly on the learning rate which should be tuned with care. Therefore, automatic selection of an optimal learning rate for an SGD-based LF model is a significant issue. To address it, this study incorporates the principle of particle swarm optimization (PSO) into an SGD-based LF model for searching an optimal learning rate automatically. With it, we further propose an adaptive Latent Factor (ALF) model. Empirical studies on two HiDS matrices from industrial applications indicate that an ALF model obviously outperforms an LF model in terms of convergence rate, and maintains competitive prediction accuracy for missing data." @default.
- W2991357302 created "2019-12-05" @default.
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- W2991357302 date "2019-10-01" @default.
- W2991357302 modified "2023-09-27" @default.
- W2991357302 title "An Adaptive Latent Factor Model via Particle Swarm Optimization for High-Dimensional and Sparse Matrices" @default.
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- W2991357302 doi "https://doi.org/10.1109/smc.2019.8914673" @default.
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