Results 81 to 90 of about 1,456,756 (304)
Bootstrap Testing of the Rank of a Matrix via Least Squared Constrained Estimation [PDF]
, 2013 In order to test if an unknown matrix has a given rank (null hypothesis), we consider the family of statistics that are minimum squared distances between an estimator and the manifold of fixed-rank matrix.
Delyon, Bernard, Portier, François
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Pediatric Blood &Cancer, EarlyView.ABSTRACT Background We describe clinical and biologic characteristics of neuroblastoma in older children, adolescents, and young adults (OCAYA); describe survival outcomes in the post‐immunotherapy era; and identify if there is an age cut‐off that best discriminates outcomes.
Rebecca J. Deyell +14 more
wiley +1 more source
Local rank tests in a multivariate nonparametric relationship [PDF]
Consider a multivariate nonparametric model where the unknown vector of functions depends on two sets of explanatory variables. For a fixed level of one set of explanatory variables, we provide consistent statistical tests, called local rank tests, to ...
Natércia Fortuna
core
Differentially Private Nonparametric Hypothesis Testing
, 2019 Hypothesis tests are a crucial statistical tool for data mining and are the workhorse of scientific research in many fields. Here we study differentially private tests of independence between a categorical and a continuous variable.
Bray, Andrew +4 more
core +1 more source
Operations Research and Decisions, 2011 A class of approximately locally most powerful type tests based on ranks of residuals is suggested for testing the hypothesis that the regression coefficient is constant in a standard regression model against the alternatives that a random walk process ...
Manohar B. Rajarshi +2 more
doaj
A Jackknife Correction to a Test for Cointegration Rank
Econometrics, 2015 This paper investigates the performance of a jackknife correction to a test for cointegration rank in a vector autoregressive system. The limiting distributions of the jackknife-corrected statistics are derived and the critical values of these ...
Marcus J. Chambers
doaj +1 more source
Smoothed nonparametric two-sample tests
, 2017 We propose new smoothed median and the Wilcoxon's rank sum test. As is pointed out by Maesono et al.(2016), some nonparametric discrete tests have a problem with their significance probability. Because of this problem, the selection of the median and the
Maesono, Yoshihiko, Moriyama, Taku
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Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Psychological safety (PS) is essential for teamwork, communication, and patient safety in complex healthcare environments. In pediatric oncology, interprofessional collaboration occurs under high emotional and organizational demands. Low PS may increase stress, burnout, and adverse events.
Alexandros Rahn +4 more
wiley +1 more source
Efficient Calculation of Jackknife Confidence Intervals for Rank Statistics
Journal of Statistical Software, 2005 An algorithm is presented for calculating concordance-discordance totals in a time of order N log N , where N is the number of observations, using a balanced binary search tree.
Roger Newson
doaj +3 more sources
The Brier score does not evaluate the clinical utility of diagnostic tests or prediction models
Diagnostic and Prognostic Research, 2017 Background A variety of statistics have been proposed as tools to help investigators assess the value of diagnostic tests or prediction models. The Brier score has been recommended on the grounds that it is a proper scoring rule that is affected by both ...
Melissa Assel +2 more
doaj +1 more source