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arXiv 1205.5658stat.COq-bio.QMstat.ME
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基于经验似然的贝叶斯计算

Bayesian computation via empirical likelihood

K. L. Mengersen, P. Pudlo, C. P. Robert

摘要:

当似然函数数值不可用时,近似贝叶斯计算(ABC)已成为分析复杂随机模型的重要工具。然而,经验似然性的成熟统计方法提供了另一种途径,绕过了模型的模拟和ABC参数的选择(汇总统计量,距离,容差),同时在观测数量上收敛。此外,绕过模型模拟可能会在复杂模型中节省大量时间,例如在群体遗传学中发现的那些。我们在本文中开发的BCel算法还通过相关的有效样本量来评估其自身的性能。使用几个例子,包括估计标准分布,时间序列,和人口遗传学模型的方法进行说明。

英文摘要:

Approximate Bayesian computation (ABC) has become an essential tool for the analysis of complex stochastic models when the likelihood function is numerically unavailable. However, the well-established statistical method of empirical likelihood provides another route to such settings that bypasses simulations from the model and the choices of the ABC parameters (summary statistics, distance, tolerance), while being convergent in the number of observations. Furthermore, bypassing model simulations may lead to significant time savings in complex models, for instance those found in population genetics. The BCel algorithm we develop in this paper also provides an evaluation of its own performance through an associated effective sample size. The method is illustrated using several examples, including estimation of standard distributions, time series, and population genetics models.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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