短語(yǔ)詞組短語(yǔ)sparsity pattern 稀疏模式sparsity problems 稀疏性問(wèn)題spatial sparsity 空間稀疏性effect sparsity 效應(yīng)稀疏性質(zhì)sparsity decomposition 稀疏分解data sparsity 數(shù)據(jù)稀疏Sparsity penalty 稀疏懲罰項(xiàng)sparsity subspace 稀疏子空間matrix sparsity 矩陣稀疏性 返回 sparsity