短語詞組短語spectral sparseness 頻譜稀疏性sparseness sparsity 稀疏population sparseness 人口過疏sparseness representation 稀疏表達channel sparseness 信道的稀疏性fuzzy sparseness 模糊稀疏度data sparseness 數(shù)據(jù)稀疏;數(shù)據(jù)稀疏問題;料稀疏;資料稀疏lifetime sparseness 時間維稀疏性 返回 sparseness