Results 21 to 30 of about 908 (194)
Normed likelihood as saddlepoint approximation
Journal of Multivariate Analysis, 1988 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Fraser, D.A.S.
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A robust and fast two-sample test of equal correlations with an application to differential co-expression. [PDF]
Stat Med, 2023 A robust and fast two‐sample test for equal Pearson correlation coefficients (PCCs) is important in solving many biological problems, including, for example, analysis of differential co‐expression. However, few existing methods for this test can achieve robustness against deviation from normal distributions, accuracy under small sample sizes, and ...
He L +4 more
europepmc +2 more sources
Explaining the saddlepoint approximation [PDF]
, 1995 Saddlepoint approximations are powerful tools for obtaining accurate expressions for densities and distribution functions. \Ve give an elementary motivation and explanation of saddlepoint approximation techniques, stressing the connection with the familiar Taylor series expansions and the Laplace approximation of integrals.
Goutis, Constantinos, Casella, George
core +4 more sources
Latent multinomial models for extended batch-mark data. [PDF]
Biometrics, 2023 Abstract Batch marking is common and useful for many capture–recapture studies where individual marks cannot be applied due to various constraints such as timing, cost, or marking difficulty. When batch marks are used, observed data are not individual capture histories but a set of counts including the numbers of individuals first marked, marked ...
Zhang W, Bonner SJ, McCrea RS.
europepmc +2 more sources
A Simulation Study to Explore Inference about Global Moran's I with Random Spatial Indexes
Geographical Analysis, Volume 55, Issue 4, Page 621-650, October 2023., 2023 Inference procedures for spatial autocorrelation statistics assume that the underlying configurations of spatial units are fixed. However, sometimes this assumption can be disadvantageous, for example, when analyzing social media posts or moving objects.
René Westerholt
wiley +1 more source
Improved inference for a boundary parameter
Canadian Journal of Statistics, Volume 51, Issue 3, Page 780-799, September 2023., 2023 Abstract The limiting distributions of statistics used to test hypotheses about parameters on the boundary of their domains may provide very poor approximations to the finite‐sample behaviour of these statistics, even for very large samples. We review theoretical work on this problem, describe hard and soft boundaries and iceberg estimators, and give ...
Soumaya Elkantassi +3 more
wiley +1 more source
Analyzing the Centers for Disease Control and Prevention Mortality Data Using Weekly Exceedance in Mortality Count and Weekly Change in Mortality Indicator: A Time Series Study. [PDF]
Health Sci RepABSTRACT Background and Aims Cause‐specific mortality (CSM) count prediction plays a vital role in the context of public health policy. In this study, we introduce a new analytical approach, which is divided into three phases to answer specific questions regarding CSM due to 14 specific causes by computing different simple, compound, and conditional ...
Chakrabarty A, Pant MD.
europepmc +2 more sources
Origin of the Bürgi‐Dunitz Angle
ChemPhysChem, Volume 24, Issue 17, September 1, 2023., 2023 Everybody likes Bürgi‐Dunitz! Quantitative bonding analyses show that the obtuse Bürgi‐Dunitz trajectory is favored over the perpendicular approach of a nucleophile to carbonyl group by each key bonding term: i) electrostatic interactions; ii) Pauli repulsion between nucleophile HOMO and ketone π(C=O); and iii) HOMO(nucleophile)‐π*(C=O) LUMO orbital ...
Humberto A. Rodríguez +2 more
wiley +1 more source
Online deep Bingham network for probabilistic orientation estimation
IET Computer Vision, Volume 17, Issue 6, Page 663-675, September 2023., 2023 In terms of computation overhead of the Bingham normalisation constant and uncertain choice of the loss function, we present an online deep Bingham network to estimate the orientation of objects and give theorems of the chosen loss function. The result shows that our method outperforms the state‐of‐the‐art in orientation accuracy and time efficiency ...
Wenjie Li +6 more
wiley +1 more source
Statistics in Medicine, Volume 42, Issue 16, Page 2746-2759, 20 July 2023., 2023 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 the response and with decreasing minor allele counts.
Pål V. Johnsen +4 more
wiley +1 more source