But majority of them are based on statistic computation, lack feedback system mechanism, and ignore that the whole text is an organic entity.
但是这些算法大部分都是基于统计计算的，缺乏反馈体系机制，忽略了文本整体的有机性和文本之间的联系性。
The method of minimum interclass variance needs to compute conic statistic in segmenting image, which costs a large computation but has less efficiency.
最小类内方差法分割图像时需要计算二次统计量，运算量大，效率不高。
The computation and statistic results show that the proposed mechanism can reduce the cost of fault detection deeply compared to single-hop test scheme in meshed OBS networks.
计算和统计结果表明，该机制相对于逐跳探测机制能节约大量监测成本。
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