Compared with the manually traced boundary, except for the failure in one image pair, the mean error radial length rate of star algorithm detected boundary was 21.80%.

结果有一组勾画失败，在其余的五组图像中星形算法与手工勾画的心内膜相比，其勾画边界的平均半径误差率为21.80%。

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In this paper, a nonparametric estimator terminated of failure rate is constructed based on censored data, and its rates of convergence in mean square and strong consistency are given respectively.

本文在截尾样本下构造了失效率的一种截尾非参数估计，并给出了其均方收敛及强相合性的局部一致收敛速度。

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Now that is an unbelievable failure rate and that is because, I mean basically all the, that they have partially privatised the underground already, they've broken it up into four separate units ready for the privatisation and so we're already seeing that loss of central management control, the effect it's actually having, every Londoner feels it every day.

BBC: News Online