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arXiv 1608.05583stat.MEstat.AP
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基于步数和转弯的连续时间动物运动的贝叶斯推断

Bayesian inference for continuous time animal movement based on steps and turns

Alison Parton, Paul G. Blackwell, Anna Skarin

摘要:

虽然通过GPS等获得的动物位置通常是在离散时间尺度上观察的,但在连续时间中制定的运动模型是优选的,以避免在面对不规则观察或在不同时间尺度上比较分析的前景时在离散时间中经历的挣扎。一类模型能够模拟一系列的运动的想法被定义为一个随机过程描述速度和轴承的组合表示运动。通过使用马尔可夫链蒙特卡罗方法描述了一种用于此类模型的贝叶斯推断方法。这种推断依赖于在离散时间内对动物位置的增强,这些位置已经被错误地观察到,并且通过模拟技术获得了更详细的运动路径。单个驯鹿(Rangifer tarandus)的真实数据分析说明了所提出的方法。

英文摘要:

Although animal locations gained via GPS, etc. are typically observed on a discrete time scale, movement models formulated in continuous time are preferable in order to avoid the struggles experienced in discrete time when faced with irregular observations or the prospect of comparing analyses on different time scales. A class of models able to emulate a range of movement ideas are defined by representing movement as a combination of stochastic processes describing both speed and bearing. A method for Bayesian inference for such models is described through the use of a Markov chain Monte Carlo approach. Such inference relies on an augmentation of the animal's locations in discrete time that have been observed with error, with a more detailed movement path gained via simulation techniques. Analysis on real data on an individual reindeer (Rangifer tarandus) illustrates the presented methods.

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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