QC-LDPC codes constructed by circulant permutation matrices will lead to inevitable cycles, named balanced-cycles.
在用循环置换矩阵构造准循环LDPC码时会出现一类无法消除的环，称为平衡环。
The method used a parity-check matrix of a short LDPC code as its mother matrix upon which a long code was constructed with circulant permutation matrices.
该方法利用一个短的LDPC码的校验矩阵作为其母矩阵，在此基础上采用循环置换矩阵构造一个长的LDPC码。
Based on this result, the spectral decomposition theorems are proved by using permutation canonical forms of nonnegative matrices.
在此基础上，利用非负方阵的置换标准形证明了谱分解定理。
To extract additional information from votes, the CBM uses multiple feature matrices, probability feature matrices, vectors and permutation group as basic components.
这套系统具有特征索引族以置换变化下不变性，区分候选人特有的概率特征向量。
To extract additional information from votes, the CBM uses multiple feature matrices, probability feature matrices, vectors and permutation group as basic components.
这套系统具有特征索引族以置换变化下不变性，区分候选人特有的概率特征向量。
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