arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2003.04720math.PR
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完成收集所需的赠券的均值和方差

The mean and variance in coupons required to complete a collection

Rohit Pandey

摘要:

本文是关于息票收集者问题的。有一些优惠券,或棒球卡,或其他塑料小饰品,放在袋的芯片或下汽水瓶等收藏家开始收集这些小饰品,并希望形成一个完整的收集所有可能的。然而,每次他们购买产品时,他们不知道他们将“收集”哪张优惠券,直到他们打开产品。他们需要收集多少张优惠券才能完成收集?在本文中,我们探讨的均值和方差的随机变量,$N$使用各种方法。它们中的一些仅适用于具有被收集的相等概率的优惠券的特殊情况,而另一些则推广到以不等概率收集优惠券的情况(这更接近于现实世界的场景)。

英文摘要:

This paper is about the Coupon collector's problem. There are some coupons, or baseball cards, or other plastic knick-knacks that are put into bags of chips or under soda bottles, etc. A collector starts collecting these trinkets and wants to form a complete collection of all possible ones. Every time they buy the product however, they don't know which coupon they will "collect" until they open the product. How many coupons do they need to collect before they complete the collection? In this paper, we explore the mean and variance of this random variable, $N$ using various methods. Some of them work only for the special case with the coupons having equal probabilities of being collected, while others generalize to the case where the coupons are collected with unequal probabilities (which is closer to a real world scenario).

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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