It possesses quite good filtering robustness and does not require apriori statistic distribution knowledge of the image.

它不需要先验的图象统计分布知识，具有良好的滤波韧性。

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In addition, the model USES a non-parametric baseline hazard distribution which does not impose any apriori parametric form on the departure time distribution.

此外，该模型使用了非参数的基本风险，其并没有对出行时间强加任何形式的先验的参数分布。

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