Results 11 to 20 of about 838,163 (294)

Covariates

open access: yes, 2022
Covariates - Relationship for Depression, Self-Esteem and Lifestyle Factors Among University Students in Singapore and ...
Gary Kum Hoe Kwok (12546268)
core   +2 more sources

Covariance of Covariance Features for Image Classification [PDF]

open access: yesProceedings of International Conference on Multimedia Retrieval, 2014
In this paper we propose a novel image descriptor built by computing the covariance of pixel level features on densely sampled patches and encoding them using their covariance. Appropriate projections to the Euclidean space and feature normalizations are employed in order to provide a strong descriptor usable with linear classifiers. In order to remove
SERRA, GIUSEPPE   +3 more
openaire   +3 more sources

On Hilbert Covariants [PDF]

open access: yesCanadian Journal of Mathematics, 2014
AbstractLet F denote a binary form of order d over the complex numbers. If r is a divisor of d, then the Hilbert covariant Hr,d(F) vanishes exactly when F is the perfect power of an order r form. In geometric terms, the coefficients of H give defining equations for the image variety X of an embedding Pr ↪ Pd.
Abdesselam, Abdelmalek   +1 more
openaire   +2 more sources

Covariate Order Tests for Covariate Effect [PDF]

open access: yesLifetime Data Analysis, 2002
A new approach for constructing tests for association between a random right censored life time variable and a covariate is proposed. The basic idea is to first arrange the observations in increasing order of the covariate and then base the test on a certain point process defined by the observation times.
openaire   +3 more sources

Model-based approaches for predicting gait changes over time [PDF]

open access: yes, 2005
Interest in automated biometrics continues to increase, but has little consideration of time which are especially important in surveillance and scan control. This paper deals with a problem of recognition by gait when time-dependent covariates are added,
Nixon, Mark, Veres, Galina, Carter, John
core   +2 more sources

Fitting multilevel multivariate models with missing data in responses and covariates that may include interactions and non-linear terms [PDF]

open access: yes, 2012
The paper extends existing models for multilevel multivariate data with mixed response types to handle quite general types and patterns of missing data values in a wide range of multilevel generalized linear models.
Browne, William J   +8 more
core   +1 more source

Functional PCA With Covariate-Dependent Mean and Covariance Structure

open access: yesTechnometrics, 2022
28 pages, 3 ...
Fei Ding   +3 more
openaire   +3 more sources

Population Pharmacokinetics of Isavuconazole in Adult: A Systematic Review

open access: yesInfection and Drug Resistance, 2023
Na Chen,1,2 Xiaojuan Wang,1,2 Yinyan Li,1,2 Ping Yang,1,2 Mingzhu Huang,1,2 Xiaoyang Lu1,2 1Department of Pharmaceutical, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, People’s Republic of China ...
Chen N   +5 more
doaj  

Semiparametric estimation with generated covariates [PDF]

open access: yes, 2016
We study a general class of semiparametric estimators when the infinite-dimensional nuisance parameters include a conditional expectation function that has been estimated nonparametrically using generated covariates.
Schienle, Melanie   +2 more
core   +1 more source

Covariance-on-covariance regression

open access: yesBiometrics
ABSTRACT A covariance-on-covariance regression model is introduced in this manuscript. It is assumed that there exists (at least) a pair of linear projections on outcome covariance matrices and predictor covariance matrices such that a log-linear model links the variances in the projection spaces, as well as additional covariates of ...
Yi Zhao, Yize Zhao
openaire   +3 more sources

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