词汇	皮卡问题
释义	皮卡问题医Picard problem
随便看	non-negative solution Nonnegative solutions non-negative solutions non-negative sparse coding nonnegative term nonnegative terms nonnegative type nonnegative value nonnegative variable non negative variable non-negative variable non-negative weight non-negative weights nonnegativities nonnegativity non-negativity nonnegativity condition nonnegativity conditions nonnegativity constraint nonnegativity constraints nonnegativity of function nonnegativity restriction nonnegativity restrictions nonnegatrive matrix nonneglected