资源类型

期刊论文 3

年份

2013 1

2007 1

2006 1

关键词

Gibbs抽样 1

MCMC 1

MCMC模拟 1

PAM 1

Weibull分布 1

共享异质性模型 1

参数不确定性分析 1

可靠性 1

并行计算 1

水文模型 1

贝叶斯分析 1

展开 ︾

检索范围:

排序: 展示方式:

基于MCMC稳态模拟的Weibull共享异质性模型及其可靠性应用

林静,韩玉启,朱慧明

《中国工程科学》 2006年 第8卷 第2期   页码 55-60

摘要: 针对传统假设中个体寿命独立同分布的不足,构建了贝叶斯Weibull共享异质性模型,提出了对寿命服从Weibull分布的产品,运用基于Gibbs抽样的马尔可夫链蒙特卡罗(Markov chain Monte Carlo,MCMC

关键词: 贝叶斯分析     可靠性     MCMC模拟     Gibbs抽样     Weibull分布     共享异质性模型    

三水源新安江模型参数不确定性分析PAM算法

程春田,李向阳

《中国工程科学》 2007年 第9卷 第9期   页码 47-51

摘要:

针对水文模型参数不确定性分析常用方法 收敛速度缓慢,容易陷入参数空间局部最优区域等 问题,提出了PAM (parallel adaptive metropolis) 算法;对三水源新安江模型参数不确定性进行分析 研究。实例研究表明显著提高了计算速度和求解质 量,参数后验分布结果为区间预报提供了条件。

关键词: 水文模型     参数不确定性分析     MCMC     PAM     并行计算    

Inverse Gaussian process-based corrosion growth modeling and its application in the reliability analysis for energy pipelines

Hao QIN, Shenwei ZHANG, Wenxing ZHOU

《结构与土木工程前沿(英文)》 2013年 第7卷 第3期   页码 276-287 doi: 10.1007/s11709-013-0207-9

摘要: This paper describes an inverse Gaussian process-based model to characterize the growth of metal-loss corrosion defects on energy pipelines. The model parameters are evaluated using the Bayesian methodology by combining the inspection data obtained from multiple inspections with the prior distributions. The Markov Chain Monte Carlo (MCMC) simulation techniques are employed to numerically evaluate the posterior marginal distribution of each individual parameter. The measurement errors associated with the ILI tools are considered in the Bayesian inference. The application of the growth model is illustrated using an example involving real inspection data collected from an in-service pipeline in Alberta, Canada. The results indicate that the model in general can predict the growth of corrosion defects reasonably well. Parametric analyses associated with the growth model as well as reliability assessment of the pipeline based on the growth model are also included in the example. The proposed model can be used to facilitate the development and application of reliability-based pipeline corrosion management.

关键词: pipeline     metal-loss corrosion     inverse Gaussian process     measurement error     hierarchical Bayesian     Markov Chain Monte Carlo (MCMC)    

标题 作者 时间 类型 操作

基于MCMC稳态模拟的Weibull共享异质性模型及其可靠性应用

林静,韩玉启,朱慧明

期刊论文

三水源新安江模型参数不确定性分析PAM算法

程春田,李向阳

期刊论文

Inverse Gaussian process-based corrosion growth modeling and its application in the reliability analysis for energy pipelines

Hao QIN, Shenwei ZHANG, Wenxing ZHOU

期刊论文