نتایج جستجو برای: censoring etc
تعداد نتایج: 124390 فیلتر نتایج به سال:
Quantile regression techniques have been widely used in empirical economics. In this paper, we consider the estimation of a generalized quantile regression model when data are subject to fixed or random censoring. Through a discretization technique, we transform the censored regression model into a sequence of binary choice models and further propose an integrated smoothed maximum score estimat...
In reliability and lifetime testing, comparison of two groups of data is a common problem. In some lifetime experiments, making a quick and efficient decision is desirable in order to save time and costs. To this end, a progressive censoring scheme can be useful, with censoring occurring at different stages [2]. This paper presents a nonparametric predictive inference (NPI) approach to compare ...
Dependent censoring occurs in longitudinal studies of recurrent events when the censoring time depends on the potentially unobserved recurrent event times. To perform regression analysis in this setting, we propose a semiparametric joint model that formulates the marginal distributions of the recurrent event process and dependent censoring time through scale-change models, while leaving the dis...
We consider a Bayesian dynamic pricing problem with an unknown distribution of customer willingness to pay (WTP). The posted price serves as either a leftor right-censoring point of the customer’s true WTP. This two-sided censoring effect makes the Bayesian dynamic pricing problem difficult to analyze. Little is known in the literature about how to solve this problem in its general form. In thi...
This paper considers nonparametric inference for duration times of two successive events. Since the second duration process becomes observable only if the first event has occurred, the length of the first duration affects the probability of the second duration being censored. Dependent censoring arises if the two duration times are correlated, which is often the case. Standard approaches to thi...
The association between maternal age of onset of dementia and amyloid deposition (measured by in vivo positron emission tomography (PET) imaging) in cognitively normal older offspring is of interest. In a regression model for amyloid, special methods are required due to the random right censoring of the covariate of maternal age of onset of dementia. Prior literature has proposed methods to add...
In this paper, we consider nonparametric copula inference under bivariate censoring. Based on an estimator of the joint cumulative distribution function, we define a discrete and two smooth estimators of the copula. The construction that we propose is valid for a large number of estimators of the distribution function, and therefore for a large number of bivariate censoring frameworks. Under so...
This paper proposes a prosodic structure and the tonal pattern of Georgian, the national language of Georgia. The language has three prosodic units above the Word: Intonation Phrase (IP), Intermediate Phrase (ip), and Accentual Phrase (AP). All these units are marked by a boundary tone, but an AP in Georgian is unique typologically in that it has pitch accent linked to a stressed syllable and p...
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