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arXiv 1508.06313stat.MEq-bio.QM
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用半完全数据似然法估算捕获-再捕获丰度

Capture-recapture abundance estimation using a semi-complete data likelihood approach

Ruth King, Brett T. McClintock, Darren Kidney, David Borchers

摘要:

在需要估计丰度时,经常收集捕获-再捕获数据。在存在未观察到的个体异质性的情况下,在捕获概率的连续尺度上指定,可能性通常不能以封闭形式提供,但只能表示为分析上难以处理的积分。估计丰度的模型拟合算法最值得注意的包括可能性的数值近似或考虑完整数据可能性的贝叶斯数据增强技术的使用。我们认为贝叶斯混合方法,定义了一个“半完整”的数据可能性,由一个完整的数据可能性组件的产品中看到的个人至少有一次在研究和边际数据可能性组件的个人没有看到在研究中,近似使用数值积分。这种方法结合了两种不同方法的优点,将半完全似然分量指定为单个积分(在单个异质性分量的维度上)。此外,模型可以在BUGS/JAGS(通常用于贝叶斯完全数据似然方法)中拟合,但与常用的超总体数据增强方法相比,计算效率显着提高(在我们考虑的两个示例中,效率约为10到77倍)。半完全似然方法是灵活的,适用于一系列模型,包括空间显式捕获-再捕获模型。模型拟合的方法被应用到两个不同的数据集对应的封闭的人口模型$M_h$雪鞋野兔数据和空间明确的捕获-再捕获模型应用到gills数据。

英文摘要:

Capture-recapture data are often collected when abundance estimation is of interest. In the presence of unobserved individual heterogeneity, specified on a continuous scale for the capture probabilities, the likelihood is not generally available in closed form, but expressible only as an analytically intractable integral. Model-fitting algorithms to estimate abundance most notably include a numerical approximation for the likelihood or use of a Bayesian data augmentation technique considering the complete data likelihood. We consider a Bayesian hybrid approach, defining a "semi-complete" data likelihood, composed of the product of a complete data likelihood component for individuals seen at least once within the study and a marginal data likelihood component for the individuals not seen within the study, approximated using numerical integration. This approach combines the advantages of the two different approaches, with the semi-complete likelihood component specified as a single integral (over the dimension of the individual heterogeneity component). In addition, the models can be fitted within BUGS/JAGS (commonly used for the Bayesian complete data likelihood approach) but with significantly improved computational efficiency compared to the commonly used super-population data augmentation approaches (between about 10 and 77 times more efficient in the two examples we consider). The semi-complete likelihood approach is flexible and applicable to a range of models, including spatially explicit capture-recapture models. The model-fitting approach is applied to two different datasets corresponding to the closed population model $M_h$ for snowshoe hare data and a spatially explicit capture-recapture model applied to gibbon data.

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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