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arXiv 2107.14656stat.AP
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使用Polya-Gamma方案的大型占用数据集的快速贝叶斯推断

Fast Bayesian inference for large occupancy data sets, using the Polya-Gamma scheme

Alex Diana, Emily Dennis, Eleni Matechou, Byron Morgan

摘要:

近年来,物种发生的研究受益于大规模公民科学数据的增加。虽然来自标准化监测计划的丰度数据偏向于经过充分研究的分类群和地点,但可以从大量地点和长时间尺度获得许多分类群的机会数据。因此,这些数据提供了测量物种发生变化的机会,特别是通过使用占用模型,该模型解释了不完美的检测。然而,现有的贝叶斯占用模型应用于大型公民科学数据集时非常缓慢。在本文中,我们提出了一个新的框架,快速贝叶斯推断占用模型,占空间和时间的自相关。我们表示的占用和检测过程中的逻辑斯谛回归框架,这使我们能够使用Polya-Gamma方案进行推理快速,有效地,即使是非常大的数据集。空间和时间的随机效应建模使用高斯过程,使我们能够推断的强度的时空自相关的数据。我们将我们的模型应用于两个英国蝴蝶物种的数据,一个常见的和广泛的,一个罕见的,使用记录从蝴蝶的新千年数据库,产生占用指数跨越45年。我们的框架可以应用于广泛的类群,提供物种发生的变化,这是用来评估生物多样性变化的措施。

英文摘要:

In recent years, the study of species' occurrence has benefited from the increased availability of large-scale citizen-science data. Whilst abundance data from standardized monitoring schemes are biased towards well-studied taxa and locations, opportunistic data are available for many taxonomic groups, from a large number of locations and across long timescales. Hence, these data provide opportunities to measure species' changes in occurrence, particularly through the use of occupancy models, which account for imperfect detection. However, existing Bayesian occupancy models are extremely slow when applied to large citizen-science data sets. In this paper, we propose a novel framework for fast Bayesian inference in occupancy models that account for both spatial and temporal autocorrelation. We express the occupancy and detection processes within a logistic regression framework, which enables us to use the Polya-Gamma scheme to perform inference quickly and efficiently, even for very large data sets. Spatial and temporal random effects are modelled using Gaussian processes, allowing us to infer the strength of spatio-temporal autocorrelation from the data. We apply our model to data on two UK butterfly species, one common and widespread and one rare, using records from the Butterflies for the New Millennium database, producing occupancy indices spanning 45 years. Our framework can be applied to a wide range of taxa, providing measures of variation in species' occurrence, which are used to assess biodiversity change.

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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