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作者：Shmueli, Galit; Russo, Ralph P.; Jank, Wolfgang
作者单位：University System of Maryland; University of Maryland College Park; University System of Maryland; University of Maryland College Park; University of Iowa
摘要：The arrival process of bidders and bids in online auctions is important for studying and modeling supply and demand in the online marketplace. A popular assumptions in the online auction literature is that a Poisson bidder arrival process is a reasonable approximation. This approximation underlies theoretical derivations, statistical models and simulations used in field studies. However. when it comes to the bid arrivals, empirical research has shown that the process is far from Poisson, with ...
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作者：Hoff, Peter D.
作者单位：University of Washington; University of Washington Seattle; University of Washington; University of Washington Seattle; University of Washington; University of Washington Seattle
摘要：Quantitative studies in many fields involve the analysis of multivariate data of diverse types, including measurements that we may consider binary, ordinal and continuous. One approach to the analysis of such mixed data is to use a copula model, in which the associations among the variables are parameterized separately from their univariate marginal distributions. The purpose of this article is to provide it simple, general method of semiparametric inference for copula models via a type of ran...
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作者：Wu, Haiyan; Yuan, Ming; Kaech, Susan M.; Halloran, M. Elizabeth
作者单位：Emory University; Rollins School Public Health; Yale University; University System of Georgia; Georgia Institute of Technology; University of Washington; University of Washington Seattle; Fred Hutchinson Cancer Center; University of Washington; University of Washington Seattle
摘要：CD8 T cells are specialized immune cells that play an important role ill the regulation of antiviral immune response and the generation of protective immunity. In this paper we investigate the differentiation of memory CD8 T cells ill the immune response using a short time course microarray experiment. structurally, this experiment is similar to many ill that it involves measurements taken oil independent samples, in one biological group, at a small number of irregularly spaced time points, an...
