型一設限下物件壽命分布具相關性之串聯系統可靠度分析;Statistical Inference of a Series System with Correlated Components Lifetime Distributions under Type-I Censoring

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题名:	型一設限下物件壽命分布具相關性之串聯系統可靠度分析;Statistical Inference of a Series System with Correlated Components Lifetime Distributions under Type-I Censoring
作者:	樊采虹
贡献者:	國立中央大學統計研究所
关键词:	統計學
日期:	2012-12-01
上传时间:	2014-03-17 14:08:34 (UTC+8)
出版者:	行政院國家科學委員會
摘要:	研究期間：10108~10207;In this proposal, we will discuss the reliability analysis of a series system under accelerated life tests. In a series system, the system fails if any of the components fails. It is often to include masked data in which the component that causes failure of the system is not observed. In most existing work the life time distributions of the components are assumed to be independent. However since different components are connected within the same system, the system operation may cause correlation among the components so that their lifetimes are indeed dependent. On the other hand, when the proportion of the masking data is high, it makes the maximum likelihood approach fail due to lack of information, especially in estimating the correlations. In addition to the EM algorithm, data imputation might also be needed in order to capture the real data structure. Bayesian approach is an appropriate alternative in such case. In this proposal, we will study both the maximum likelihood and the Bayesian approaches under the above framework. On the other hand, statistical inference of the commonly used lifetime distributions such as the exponential distribution, Weibull distribution, and lognormal distributions are well developed in univariate case. However, we will focus on multivariate lifetime distributions. How to define and/or simulate the data from other multivariate distributions is another issue to be considered in this proposal. We will also plan to propose some further statistical inference on the correlation among the components.
關聯:	財團法人國家實驗研究院科技政策研究與資訊中心
显示于类别:	[統計研究所] 研究計畫

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