Sparsity Regularization
Sparsity regularization aims to improve machine learning models by encouraging solutions with only a few non-zero parameters, enhancing efficiency and generalizability. Current research focuses on developing novel regularization techniques, including those based on tree structures, dropout mechanisms, Gaussian mixtures, and adaptive regularization within iterative algorithms like iterative hard thresholding. These advancements are applied across diverse areas, such as causal inference, natural language processing, inverse problems, and recommendation systems, leading to improved model performance and reduced computational costs. The resulting sparse models offer benefits in terms of interpretability, reduced memory footprint, and faster inference.