单词：essentially non-negative matrix
essentially non-negative matrix的用法和样例：
例句
- In the addition, we give an upper bound for the spread of a nonnegative matrix.另外，我们还给出了非负矩阵分离度的上界估计。
- A novel method, constrained non-negative matrix factorization, is presented to capture the latent semantic relations.提出一种获取在语义的受限非负矩阵分解方法。
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