然后把等价类映射为矩阵表达形式，再通过矩阵的特性来度量影响片段相似度的不同因子，实现了相似片段的排序。
Afterwards, equivalence classes are mapped into matrix representation. Therefore various factors are computed to rank the similarity of the selected video clips by characters of the matrix.
RSA的安全性依赖于大数的因子分解，但并没有从理论上证明破译rsa的难度与大数分解难度等价。
RSA 's security relies on the factorization of large Numbers, but not theoretically prove the difficulty of deciphering the RSA and the difficulty of large integer equivalent.
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