With traditional theory of loss distribution, the goodness of fit of the property loss distribution model depends on the choice of the experience distribution function and parameters.

依赖传统的损失分布理论，财产损失分布模型拟合的优劣往往取决于经验分布函数的选择和参数的确定。

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Results: a general framework of the model is established. The property of covariance density and the goodness of fit test are given.

结果：提出了模型的一般框架，并给出了协方差密度的性质以及模型的拟合优度检验。

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The tendency check, goodness of fit check, maximum likelihood estimates (MLE) of the parameters and MTBF for AMSAA model are presented.

给出了趋势检验、AMSAA模型的拟合优度检验及模型参数的极大似然估计方法。

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