多源验前信息下先验分布的融合方法

The Fusion Method for Prior Distribution in Multi-sources of Prior Information

在产品的寿命试验中,有时不可能获得子样确切的失效时间,而只能在选定的某些时刻,抽取若干子样,观察产品的失效情况,一般并不能获得寿终数据,只有删失数据。对此试验结果,在产品具有多源验前信息的情况下,基于极大似然的思想,给出了两种验前信息的融合方法,合理地确定了各验前分布在融合综合验前分布中的权重。

Sometimes, the exact failure time of samples cannot be obtained in the life test of some reliability products, and some samples in certain fixed time can take out and observe the failure instance. However, not the completed data but the censored data can be got under usually circumstance. With this test result, based on the ideology of the maximum likelihood, two fusion methods are presented when prior information comes from different sources, and weights of every prior distribution are confirmed logically when fusing.