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arXiv 0810.3079math.PR
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与Yule过程相关的Occupational Schemes

Occupancy Schemes Associated to Yule Processes

Philippe Robert, Florian Simatos

摘要:

被认为是一个无限数量的箱子和一个随机的概率向量的球的位置占用问题。仓的相应大小与Yule过程的分裂时间有关。第一个空箱子的景观的渐近行为,即,分析了由点过程表示的相应指标集,并建立了按分布收敛于混合Poisson过程的定理。此外,随机环境的影响,随机概率向量,进行了分析。它由两个主要组成部分表示:i.i.d.序列和固定随机变量。这些组件中的每一个都对随机模型的定性行为有特定的影响。它特别示出,对于某些值的参数,一些罕见的事件,这是确定的,在某些区域中的空箱子的数量的平均值上起着重要的作用。

英文摘要:

An occupancy problem with an infinite number of bins and a random probability vector for the locations of the balls is considered. The respective sizes of bins are related to the split times of a Yule process. The asymptotic behavior of the landscape of first empty bins, i.e., the set of corresponding indices represented by point processes, is analyzed and convergences in distribution to mixed Poisson processes are established. Additionally, the influence of the random environment, the random probability vector, is analyzed. It is represented by two main components: an i.i.d. sequence and a fixed random variable. Each of these components has a specific impact on the qualitative behavior of the stochastic model. It is shown in particular that for some values of the parameters, some rare events, which are identified, play an important role on average values of the number of empty bins in some regions.

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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