Saddlepoint approximations to score test statistics in logistic regression for analyzing genome-wide association studies.
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DOI: 10.1002/sim.9746
Abstract: We investigate saddlepoint approximations of tail probabilities of the score test statistic in logistic regression for genome-wide association studies. The inaccuracy in the normal approximation of the score test statistic increases with increasing imbalance in… read more here.
Keywords: saddlepoint approximations; genome wide; logistic regression; score test ... See more keywords
Calibrated bootstrap and saddlepoint approximations of finite population L-statistics
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DOI: 10.1007/s10986-019-09446-9
Abstract: We propose two methods to approximate the distribution function of a Studentized linear combination of order statistics for a simple random sample drawn without replacement from a finite population. Using auxiliary data available for the… read more here.
Keywords: bootstrap saddlepoint; saddlepoint approximations; population; finite population ... See more keywords
Saddlepoint approximations to the distribution of the total distance of the multivariate isotropic and von Mises–Fisher random walks
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DOI: 10.3103/s1066530717010021
Abstract: This article considers the random walk over Rp, with p ≥ 2, where the directions taken by the individual steps follow either the isotropic or the vonMises–Fisher distributions. Saddlepoint approximations to the density and to… read more here.
Keywords: approximations distribution; total distance; saddlepoint approximations; distribution total ... See more keywords