Results 21 to 30 of about 838,163 (294)

Covariates

, 2016
Relevant covariates and meta-data used in occupancy model fitting.
Robert L. Wilkerson (2930208), Christine A. Howell (260294), Viviana Ruiz-Gutierrez (2908511), Rodney B. Siegel (2930205), Morgan W. Tingley (313513)   +4 more
core   +1 more source

Covariance-insured screening [PDF]

Computational Statistics & Data Analysis, 2019
Modern bio-technologies have produced a vast amount of high-throughput data with the number of predictors far greater than the sample size. In order to identify more novel biomarkers and understand biological mechanisms, it is vital to detect signals weakly associated with outcomes among ultrahigh-dimensional predictors.
Kevin He, Jian Kang, Hyokyoung Grace Hong, Ji Zhu, Yanming Li, Huazhen Lin, Han Xu, Yi Li 0019   +7 more
openaire   +3 more sources

Partial orders with respect to continuous covariates and tests for the proportional hazards model [PDF]

, 2008
Several omnibus tests of the proportional hazards assumption have been proposed in the literature. In the two-sample case, tests have also been developed against ordered alternatives like monotone hazard ratio and monotone ratio of cumulative hazards ...
Bhattacharjee, Arnab, Arnab Bhattacharjee, Bhattacharjee, Arnab; id_orcid   +2 more
core   +1 more source

Multidimensional Rational Covariance Extension with Approximate Covariance Matching [PDF]

SIAM Journal on Control and Optimization, 2018
In our companion paper [A. Ringh, J. Karlsson, and A. Lindquist, SIAM J. Control Optim., 54 (2016), pp. 1950--1982] we discussed the multidimensional rational covariance extension problem (RCEP), which has important applications in image processing and spectral estimation in radar, sonar, and medical imaging.
Axel Ringh, Johan Karlsson, Anders Lindquist   +2 more
openaire   +4 more sources

ihmeuw/covid-seiir-covariates: Public update of global numbers

, 2020
Data dump of covariates used in the IHME covid-19 ...
James Collins
core   +1 more source

Multiple imputation of missing covariates with non-linear effects and interactions: an evaluation of statistical methods. [PDF]

, 2012
BACKGROUND: Multiple imputation is often used for missing data. When a model contains as covariates more than one function of a variable, it is not obvious how best to impute missing values in these covariates.
Bartlett Jonathan W, Bartlett, Jonathan W, White, Ian R, Seaman Shaun R, White Ian R, Ian R White, Seaman, Shaun R, Shaun R Seaman, Jonathan W Bartlett   +8 more
core   +2 more sources

On-Line Adaptation of Exploration in the One-Armed Bandit with Covariates Problem

, 2010
Many sequential decision making problems require an agent to balance exploration and exploitation to maximise long-term reward. Existing policies that address this tradeoff typically have parameters that are set a priori to control the amount of ...
Niall M. Adams, Sykulski, Adam M., Nicholas R. Jennings, Jennings, Nicholas R., Jennings, Nicholas R, Sykulski, Adam M, Adams, Niall M, Adams, Niall M., Adam M. Sykulski   +8 more
core   +2 more sources

Occupancy dynamics of South American Sea-Lions in Brazilian Haul-outs

Brazilian Journal of Biology
Along the Brazilian coast only two haul-outs of South American sea lions (Otaria flavescens) are known: Ilha dos Lobos and Molhe Leste, both located in the southernmost state of Brazil, Rio Grande do Sul.
H. Pavanato, KG. Silva, SC. Estima, DS. Monteiro, PG. Kinas   +4 more
doaj   +1 more source

A Covariance Equation

The Journal of Geometric Analysis, 2019
Let $§$ be a commutative semigroup with identity $e$ and let $Γ$ be a compact subset in the pointwise convergence topology of the space $§'$ of all non-zero multiplicative functions on $§.$ Given a continuous function $F: Γ\to \mathbb C$ and a complex regular Borel measure $μ$ on $Γ$ such that $μ(Γ) \not = 0.$ It is shown that $$ μ(Γ) \int_Γ \varrho(s)
openaire   +4 more sources

Association analysis between polygenic risk scores and traits: practical guidelines and tutorial with an illustrative data set of schizophrenia

Frontiers in Psychiatry
Most methodological Polygenic Risk Score (PRS)-related papers explain the laborious process of computing the PRS in great depth. Afterwards, as a last step, it is generally described that to test a possible association between a PRS and a trait of ...
Itziar Irigoien, Patricia Mas-Bermejo, Patricia Mas-Bermejo, Sergi Papiol, Sergi Papiol, Sergi Papiol, Neus Barrantes-Vidal, Neus Barrantes-Vidal, Neus Barrantes-Vidal, Araceli Rosa, Araceli Rosa, Araceli Rosa, Concepción Arenas   +12 more
doaj   +1 more source